Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/i2c-2.6

Documentation/hwmon/it87

@@ -4,18 +4,18 @@ Kernel driver it87
 Supported chips:
   * IT8705F
     Prefix: 'it87'
-    Addresses scanned: from Super I/O config space, or default ISA 0x290 (8 I/O ports)
+    Addresses scanned: from Super I/O config space (8 I/O ports)
     Datasheet: Publicly available at the ITE website
                http://www.ite.com.tw/
   * IT8712F
     Prefix: 'it8712'
     Addresses scanned: I2C 0x28 - 0x2f
-                       from Super I/O config space, or default ISA 0x290 (8 I/O ports)
+                       from Super I/O config space (8 I/O ports)
     Datasheet: Publicly available at the ITE website
                http://www.ite.com.tw/
   * SiS950   [clone of IT8705F]
-    Prefix: 'sis950'
-    Addresses scanned: from Super I/O config space, or default ISA 0x290 (8 I/O ports)
+    Prefix: 'it87'
+    Addresses scanned: from Super I/O config space (8 I/O ports)
     Datasheet: No longer be available
 
 Author: Christophe Gauthron <chrisg@0-in.com>

Documentation/hwmon/lm90

@@ -24,14 +24,14 @@ Supported chips:
                http://www.national.com/pf/LM/LM86.html
   * Analog Devices ADM1032
     Prefix: 'adm1032'
-    Addresses scanned: I2C 0x4c
+    Addresses scanned: I2C 0x4c and 0x4d
     Datasheet: Publicly available at the Analog Devices website
-               http://products.analog.com/products/info.asp?product=ADM1032
+               http://www.analog.com/en/prod/0,2877,ADM1032,00.html
   * Analog Devices ADT7461
     Prefix: 'adt7461'
-    Addresses scanned: I2C 0x4c
+    Addresses scanned: I2C 0x4c and 0x4d
     Datasheet: Publicly available at the Analog Devices website
-               http://products.analog.com/products/info.asp?product=ADT7461
+               http://www.analog.com/en/prod/0,2877,ADT7461,00.html
     Note: Only if in ADM1032 compatibility mode
   * Maxim MAX6657
     Prefix: 'max6657'
@@ -71,8 +71,8 @@ increased resolution of the remote temperature measurement.
 
 The different chipsets of the family are not strictly identical, although
 very similar. This driver doesn't handle any specific feature for now,
-but could if there ever was a need for it. For reference, here comes a
-non-exhaustive list of specific features:
+with the exception of SMBus PEC. For reference, here comes a non-exhaustive
+list of specific features:
 
 LM90:
   * Filter and alert configuration register at 0xBF.
@@ -91,6 +91,7 @@ ADM1032:
   * Conversion averaging.
   * Up to 64 conversions/s.
   * ALERT is triggered by open remote sensor.
+  * SMBus PEC support for Write Byte and Receive Byte transactions.
 
 ADT7461
   * Extended temperature range (breaks compatibility)
@@ -119,3 +120,37 @@ The lm90 driver will not update its values more frequently than every
 other second; reading them more often will do no harm, but will return
 'old' values.
 
+PEC Support
+-----------
+
+The ADM1032 is the only chip of the family which supports PEC. It does
+not support PEC on all transactions though, so some care must be taken.
+
+When reading a register value, the PEC byte is computed and sent by the
+ADM1032 chip. However, in the case of a combined transaction (SMBus Read
+Byte), the ADM1032 computes the CRC value over only the second half of
+the message rather than its entirety, because it thinks the first half
+of the message belongs to a different transaction. As a result, the CRC
+value differs from what the SMBus master expects, and all reads fail.
+
+For this reason, the lm90 driver will enable PEC for the ADM1032 only if
+the bus supports the SMBus Send Byte and Receive Byte transaction types.
+These transactions will be used to read register values, instead of
+SMBus Read Byte, and PEC will work properly.
+
+Additionally, the ADM1032 doesn't support SMBus Send Byte with PEC.
+Instead, it will try to write the PEC value to the register (because the
+SMBus Send Byte transaction with PEC is similar to a Write Byte transaction
+without PEC), which is not what we want. Thus, PEC is explicitely disabled
+on SMBus Send Byte transactions in the lm90 driver.
+
+PEC on byte data transactions represents a significant increase in bandwidth
+usage (+33% for writes, +25% for reads) in normal conditions. With the need
+to use two SMBus transaction for reads, this overhead jumps to +50%. Worse,
+two transactions will typically mean twice as much delay waiting for
+transaction completion, effectively doubling the register cache refresh time.
+I guess reliability comes at a price, but it's quite expensive this time.
+
+So, as not everyone might enjoy the slowdown, PEC can be disabled through
+sysfs. Just write 0 to the "pec" file and PEC will be disabled. Write 1
+to that file to enable PEC again.

Documentation/hwmon/smsc47b397

@@ -3,6 +3,7 @@ Kernel driver smsc47b397
 
 Supported chips:
   * SMSC LPC47B397-NC
+  * SMSC SCH5307-NS
     Prefix: 'smsc47b397'
     Addresses scanned: none, address read from Super I/O config space
     Datasheet: In this file
@@ -12,11 +13,14 @@ Authors: Mark M. Hoffman <mhoffman@lightlink.com>
 
 November 23, 2004
 
-The following specification describes the SMSC LPC47B397-NC sensor chip
+The following specification describes the SMSC LPC47B397-NC[1] sensor chip
 (for which there is no public datasheet available). This document was
 provided by Craig Kelly (In-Store Broadcast Network) and edited/corrected
 by Mark M. Hoffman <mhoffman@lightlink.com>.
 
+[1] And SMSC SCH5307-NS, which has a different device ID but is otherwise
+compatible.
+
 * * * * *
 
 Methods for detecting the HP SIO and reading the thermal data on a dc7100.
@@ -127,7 +131,7 @@ OUT	DX,AL
 The registers of interest for identifying the SIO on the dc7100 are Device ID
 (0x20) and Device Rev  (0x21).
 
-The Device ID will read 0X6F
+The Device ID will read 0x6F (for SCH5307-NS, 0x81)
 The Device Rev currently reads 0x01
 
 Obtaining the HWM Base Address.

Documentation/hwmon/smsc47m1

@@ -12,6 +12,10 @@ Supported chips:
         http://www.smsc.com/main/datasheets/47m14x.pdf
         http://www.smsc.com/main/tools/discontinued/47m15x.pdf
         http://www.smsc.com/main/datasheets/47m192.pdf
+  * SMSC LPC47M997
+    Addresses scanned: none, address read from Super I/O config space
+    Prefix: 'smsc47m1'
+    Datasheet: none
 
 Authors:
         Mark D. Studebaker <mdsxyz123@yahoo.com>,
@@ -30,6 +34,9 @@ The 47M15x and 47M192 chips contain a full 'hardware monitoring block'
 in addition to the fan monitoring and control. The hardware monitoring
 block is not supported by the driver.
 
+No documentation is available for the 47M997, but it has the same device
+ID as the 47M15x and 47M192 chips and seems to be compatible.
+
 Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
 triggered if the rotation speed has dropped below a programmable limit. Fan
 readings can be divided by a programmable divider (1, 2, 4 or 8) to give

Documentation/hwmon/sysfs-interface

@@ -272,3 +272,6 @@ beep_mask	Bitmask for beep.
 
 eeprom		Raw EEPROM data in binary form.
 		Read only.
+
+pec		Enable or disable PEC (SMBus only)
+		Read/Write

Documentation/hwmon/via686a

@@ -18,8 +18,9 @@ Authors:
 Module Parameters
 -----------------
 
-force_addr=0xaddr       Set the I/O base address. Useful for Asus A7V boards
-                        that don't set the address in the BIOS. Does not do a
+force_addr=0xaddr       Set the I/O base address. Useful for boards that
+                        don't set the address in the BIOS. Look for a BIOS
+                        upgrade before resorting to this. Does not do a
                         PCI force; the via686a must still be present in lspci.
                         Don't use this unless the driver complains that the
                         base address is not set.
@@ -63,3 +64,15 @@ miss once-only alarms.
 
 The driver only updates its values each 1.5 seconds; reading it more often
 will do no harm, but will return 'old' values.
+
+Known Issues
+------------
+
+This driver handles sensors integrated in some VIA south bridges. It is
+possible that a motherboard maker used a VT82C686A/B chip as part of a
+product design but was not interested in its hardware monitoring features,
+in which case the sensor inputs will not be wired. This is the case of
+the Asus K7V, A7V and A7V133 motherboards, to name only a few of them.
+So, if you need the force_addr parameter, and end up with values which
+don't seem to make any sense, don't look any further: your chip is simply
+not wired for hardware monitoring.

Documentation/i2c/busses/i2c-i810

@@ -2,6 +2,7 @@ Kernel driver i2c-i810
 
 Supported adapters:
   * Intel 82810, 82810-DC100, 82810E, and 82815 (GMCH)
+  * Intel 82845G (GMCH)
 
 Authors: 
 	Frodo Looijaard <frodol@dds.nl>, 

Documentation/i2c/busses/i2c-viapro

@@ -4,17 +4,18 @@ Supported adapters:
   * VIA Technologies, Inc. VT82C596A/B
     Datasheet: Sometimes available at the VIA website
 
-  * VIA Technologies, Inc. VT82C686A/B 
+  * VIA Technologies, Inc. VT82C686A/B
     Datasheet: Sometimes available at the VIA website
 
   * VIA Technologies, Inc. VT8231, VT8233, VT8233A, VT8235, VT8237
     Datasheet: available on request from Via
 
 Authors:
-	Frodo Looijaard <frodol@dds.nl>,  
-	Philip Edelbrock <phil@netroedge.com>, 
-	Kyösti Mälkki <kmalkki@cc.hut.fi>, 
-	Mark D. Studebaker <mdsxyz123@yahoo.com> 
+	Frodo Looijaard <frodol@dds.nl>,
+	Philip Edelbrock <phil@netroedge.com>,
+	Kyösti Mälkki <kmalkki@cc.hut.fi>,
+	Mark D. Studebaker <mdsxyz123@yahoo.com>,
+	Jean Delvare <khali@linux-fr.org>
 
 Module Parameters
 -----------------
@@ -28,20 +29,22 @@ Description
 -----------
 
 i2c-viapro is a true SMBus host driver for motherboards with one of the
-supported VIA southbridges.
+supported VIA south bridges.
 
 Your lspci -n listing must show one of these :
 
- device 1106:3050   (VT82C596 function 3)
- device 1106:3051   (VT82C596 function 3)
+ device 1106:3050   (VT82C596A function 3)
+ device 1106:3051   (VT82C596B function 3)
  device 1106:3057   (VT82C686 function 4)
  device 1106:3074   (VT8233)
  device 1106:3147   (VT8233A)
- device 1106:8235   (VT8231)
- devide 1106:3177   (VT8235)
- devide 1106:3227   (VT8237)
+ device 1106:8235   (VT8231 function 4)
+ device 1106:3177   (VT8235)
+ device 1106:3227   (VT8237R)
 
 If none of these show up, you should look in the BIOS for settings like
 enable ACPI / SMBus or even USB.
 
-
+Except for the oldest chips (VT82C596A/B, VT82C686A and most probably
+VT8231), this driver supports I2C block transactions. Such transactions
+are mainly useful to read from and write to EEPROMs.

Documentation/i2c/chips/x1205

@@ -0,0 +1,38 @@
+Kernel driver x1205
+===================
+
+Supported chips:
+  * Xicor X1205 RTC
+    Prefix: 'x1205'
+    Addresses scanned: none
+    Datasheet: http://www.intersil.com/cda/deviceinfo/0,1477,X1205,00.html
+
+Authors:
+	Karen Spearel <kas11@tampabay.rr.com>,
+	Alessandro Zummo <a.zummo@towertech.it>
+
+Description
+-----------
+
+This module aims to provide complete access to the Xicor X1205 RTC.
+Recently Xicor has merged with Intersil, but the chip is
+still sold under the Xicor brand.
+
+This chip is located at address 0x6f and uses a 2-byte register addressing.
+Two bytes need to be written to read a single register, while most
+other chips just require one and take the second one as the data
+to be written. To prevent corrupting unknown chips, the user must
+explicitely set the probe parameter.
+
+example:
+
+modprobe x1205 probe=0,0x6f
+
+The module supports one more option, hctosys, which is used to set the
+software clock from the x1205. On systems where the x1205 is the
+only hardware rtc, this parameter could be used to achieve a correct
+date/time earlier in the system boot sequence.
+
+example:
+
+modprobe x1205 probe=0,0x6f hctosys=1

Documentation/i2c/functionality

@@ -17,9 +17,10 @@ For the most up-to-date list of functionality constants, please check
   I2C_FUNC_I2C                    Plain i2c-level commands (Pure SMBus
                                   adapters typically can not do these)
   I2C_FUNC_10BIT_ADDR             Handles the 10-bit address extensions
-  I2C_FUNC_PROTOCOL_MANGLING      Knows about the I2C_M_REV_DIR_ADDR,
-                                  I2C_M_REV_DIR_ADDR and I2C_M_REV_DIR_NOSTART
-                                  flags (which modify the i2c protocol!)
+  I2C_FUNC_PROTOCOL_MANGLING      Knows about the I2C_M_IGNORE_NAK,
+                                  I2C_M_REV_DIR_ADDR, I2C_M_NOSTART and
+                                  I2C_M_NO_RD_ACK flags (which modify the
+                                  I2C protocol!)
   I2C_FUNC_SMBUS_QUICK            Handles the SMBus write_quick command
   I2C_FUNC_SMBUS_READ_BYTE        Handles the SMBus read_byte command
   I2C_FUNC_SMBUS_WRITE_BYTE       Handles the SMBus write_byte command

Documentation/i2c/porting-clients

@@ -82,7 +82,7 @@ Technical changes:
   exit and exit_free. For i2c+isa drivers, labels should be named
   ERROR0, ERROR1 and ERROR2. Don't forget to properly set err before
   jumping to error labels. By the way, labels should be left-aligned.
-  Use memset to fill the client and data area with 0x00.
+  Use kzalloc instead of kmalloc.
   Use i2c_set_clientdata to set the client data (as opposed to
   a direct access to client->data).
   Use strlcpy instead of strcpy to copy the client name.

Documentation/i2c/writing-clients

@@ -33,8 +33,8 @@ static struct i2c_driver foo_driver = {
 	.command	= &foo_command /* may be NULL */
 }
  
-The name can be chosen freely, and may be upto 40 characters long. Please
-use something descriptive here.
+The name field must match the driver name, including the case. It must not
+contain spaces, and may be up to 31 characters long.
 
 Don't worry about the flags field; just put I2C_DF_NOTIFY into it. This
 means that your driver will be notified when new adapters are found.
@@ -43,9 +43,6 @@ This is almost always what you want.
 All other fields are for call-back functions which will be explained 
 below.
 
-There use to be two additional fields in this structure, inc_use et dec_use,
-for module usage count, but these fields were obsoleted and removed.
-
 
 Extra client data
 =================
@@ -58,6 +55,7 @@ be very useful.
 An example structure is below.
 
   struct foo_data {
+    struct i2c_client client;
     struct semaphore lock; /* For ISA access in `sensors' drivers. */
     int sysctl_id;         /* To keep the /proc directory entry for 
                               `sensors' drivers. */
@@ -310,22 +308,15 @@ For now, you can ignore the `flags' parameter. It is there for future use.
        client structure, even though we cannot fill it completely yet.
        But it allows us to access several i2c functions safely */
     
-    /* Note that we reserve some space for foo_data too. If you don't
-       need it, remove it. We do it here to help to lessen memory
-       fragmentation. */
-    if (! (new_client = kmalloc(sizeof(struct i2c_client) + 
-                                sizeof(struct foo_data),
-                                GFP_KERNEL))) {
+    if (!(data = kzalloc(sizeof(struct foo_data), GFP_KERNEL))) {
       err = -ENOMEM;
       goto ERROR0;
     }
 
-    /* This is tricky, but it will set the data to the right value. */
-    client->data = new_client + 1;
-    data = (struct foo_data *) (client->data);
+    new_client = &data->client;
+    i2c_set_clientdata(new_client, data);
 
     new_client->addr = address;
-    new_client->data = data;
     new_client->adapter = adapter;
     new_client->driver = &foo_driver;
     new_client->flags = 0;
@@ -451,7 +442,7 @@ much simpler than the attachment code, fortunately!
       release_region(client->addr,LM78_EXTENT);
     /* HYBRID SENSORS CHIP ONLY END */
 
-    kfree(client); /* Frees client data too, if allocated at the same time */
+    kfree(data);
     return 0;
   }
 
@@ -576,12 +567,12 @@ SMBus communication
   extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
                                         u8 command, u8 length,
                                         u8 *values);
+  extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
+                                           u8 command, u8 *values);
 
 These ones were removed in Linux 2.6.10 because they had no users, but could
 be added back later if needed:
 
-  extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
-                                           u8 command, u8 *values);
   extern s32 i2c_smbus_read_block_data(struct i2c_client * client,
                                        u8 command, u8 *values);
   extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,

MAINTAINERS

@@ -2736,6 +2736,12 @@ P:	Roger Luethi
 M:	rl@hellgate.ch
 S:	Maintained
 
+VIAPRO SMBUS DRIVER
+P:	Jean Delvare
+M:	khali@linux-fr.org
+L:	lm-sensors@lm-sensors.org
+S:	Maintained
+
 UCLINUX (AND M68KNOMMU)
 P:	Greg Ungerer
 M:	gerg@uclinux.org

drivers/hwmon/adm1021.c

@@ -121,7 +121,7 @@ static int adm1021_write_value(struct i2c_client *client, u8 reg,
 static struct adm1021_data *adm1021_update_device(struct device *dev);
 
 /* (amalysh) read only mode, otherwise any limit's writing confuse BIOS */
-static int read_only = 0;
+static int read_only;
 
 
 /* This is the driver that will be inserted */
@@ -204,11 +204,10 @@ static int adm1021_detect(struct i2c_adapter *adapter, int address, int kind)
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access adm1021_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct adm1021_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct adm1021_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto error0;
 	}
-	memset(data, 0, sizeof(struct adm1021_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/adm1025.c

@@ -331,11 +331,10 @@ static int adm1025_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct adm1025_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct adm1025_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct adm1025_data));
 
 	/* The common I2C client data is placed right before the
 	   ADM1025-specific data. */

drivers/hwmon/adm1026.c

@@ -315,7 +315,7 @@ static struct i2c_driver adm1026_driver = {
 	.detach_client  = adm1026_detach_client,
 };
 
-int adm1026_attach_adapter(struct i2c_adapter *adapter)
+static int adm1026_attach_adapter(struct i2c_adapter *adapter)
 {
 	if (!(adapter->class & I2C_CLASS_HWMON)) {
 		return 0;
@@ -323,7 +323,7 @@ int adm1026_attach_adapter(struct i2c_adapter *adapter)
 	return i2c_probe(adapter, &addr_data, adm1026_detect);
 }
 
-int adm1026_detach_client(struct i2c_client *client)
+static int adm1026_detach_client(struct i2c_client *client)
 {
 	struct adm1026_data *data = i2c_get_clientdata(client);
 	hwmon_device_unregister(data->class_dev);
@@ -332,7 +332,7 @@ int adm1026_detach_client(struct i2c_client *client)
 	return 0;
 }
 
-int adm1026_read_value(struct i2c_client *client, u8 reg)
+static int adm1026_read_value(struct i2c_client *client, u8 reg)
 {
 	int res;
 
@@ -346,7 +346,7 @@ int adm1026_read_value(struct i2c_client *client, u8 reg)
 	return res;
 }
 
-int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
+static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
 {
 	int res;
 
@@ -360,7 +360,7 @@ int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
 	return res;
 }
 
-void adm1026_init_client(struct i2c_client *client)
+static void adm1026_init_client(struct i2c_client *client)
 {
 	int value, i;
 	struct adm1026_data *data = i2c_get_clientdata(client);
@@ -460,7 +460,7 @@ void adm1026_init_client(struct i2c_client *client)
 	}
 }
 
-void adm1026_print_gpio(struct i2c_client *client)
+static void adm1026_print_gpio(struct i2c_client *client)
 {
 	struct adm1026_data *data = i2c_get_clientdata(client);
 	int  i;
@@ -492,7 +492,7 @@ void adm1026_print_gpio(struct i2c_client *client)
 	}
 }
 
-void adm1026_fixup_gpio(struct i2c_client *client)
+static void adm1026_fixup_gpio(struct i2c_client *client)
 {
 	struct adm1026_data *data = i2c_get_clientdata(client);
 	int  i;
@@ -1452,8 +1452,8 @@ static DEVICE_ATTR(temp1_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
 static DEVICE_ATTR(temp2_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
 static DEVICE_ATTR(temp3_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
 
-int adm1026_detect(struct i2c_adapter *adapter, int address,
-		int kind)
+static int adm1026_detect(struct i2c_adapter *adapter, int address,
+			  int kind)
 {
 	int company, verstep;
 	struct i2c_client *new_client;
@@ -1470,13 +1470,11 @@ int adm1026_detect(struct i2c_adapter *adapter, int address,
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access adm1026_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct adm1026_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct adm1026_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
 
-	memset(data, 0, sizeof(struct adm1026_data));
-
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
 	new_client->addr = address;

drivers/hwmon/adm1031.c

@@ -740,11 +740,10 @@ static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct adm1031_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct adm1031_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/adm9240.c

@@ -45,6 +45,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
+#include <linux/hwmon-sysfs.h>
 #include <linux/hwmon.h>
 #include <linux/hwmon-vid.h>
 #include <linux/err.h>
@@ -69,8 +70,7 @@ I2C_CLIENT_INSMOD_3(adm9240, ds1780, lm81);
 #define ADM9240_REG_INT(nr)		(0x41 + (nr))
 #define ADM9240_REG_INT_MASK(nr)	(0x43 + (nr))
 #define ADM9240_REG_TEMP		0x27
-#define ADM9240_REG_TEMP_HIGH		0x39
-#define ADM9240_REG_TEMP_HYST		0x3a
+#define ADM9240_REG_TEMP_MAX(nr)	(0x39 + (nr)) /* 0, 1 = high, hyst */
 #define ADM9240_REG_ANALOG_OUT		0x19
 #define ADM9240_REG_CHASSIS_CLEAR	0x46
 #define ADM9240_REG_VID_FAN_DIV		0x47
@@ -162,177 +162,155 @@ struct adm9240_data {
 	u8 fan_min[2];		/* rw	fan1_min */
 	u8 fan_div[2];		/* rw	fan1_div, read-only accessor */
 	s16 temp;		/* ro	temp1_input, 9-bit sign-extended */
-	s8 temp_high;		/* rw	temp1_max */
-	s8 temp_hyst;		/* rw	temp1_max_hyst */
+	s8 temp_max[2];		/* rw	0 -> temp_max, 1 -> temp_max_hyst */
 	u16 alarms;		/* ro	alarms */
 	u8 aout;		/* rw	aout_output */
 	u8 vid;			/* ro	vid */
 	u8 vrm;			/* --	vrm set on startup, no accessor */
 };
 
-/* i2c byte read/write interface */
-static int adm9240_read_value(struct i2c_client *client, u8 reg)
+/*** sysfs accessors ***/
+
+/* temperature */
+static ssize_t show_temp(struct device *dev, struct device_attribute *dummy,
+		char *buf)
 {
-	return i2c_smbus_read_byte_data(client, reg);
+	struct adm9240_data *data = adm9240_update_device(dev);
+	return sprintf(buf, "%d\n", data->temp * 500); /* 9-bit value */
 }
 
-static int adm9240_write_value(struct i2c_client *client, u8 reg, u8 value)
+static ssize_t show_max(struct device *dev, struct device_attribute *devattr,
+		char *buf)
 {
-	return i2c_smbus_write_byte_data(client, reg, value);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	struct adm9240_data *data = adm9240_update_device(dev);
+	return sprintf(buf, "%d\n", data->temp_max[attr->index] * 1000);
 }
 
-/*** sysfs accessors ***/
+static ssize_t set_max(struct device *dev, struct device_attribute *devattr,
+		const char *buf, size_t count)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	struct i2c_client *client = to_i2c_client(dev);
+	struct adm9240_data *data = i2c_get_clientdata(client);
+	long val = simple_strtol(buf, NULL, 10);
+
+	down(&data->update_lock);
+	data->temp_max[attr->index] = TEMP_TO_REG(val);
+	i2c_smbus_write_byte_data(client, ADM9240_REG_TEMP_MAX(attr->index),
+			data->temp_max[attr->index]);
+	up(&data->update_lock);
+	return count;
+}
 
-/* temperature */
-#define show_temp(value, scale)					\
-static ssize_t show_##value(struct device *dev,			\
-			    struct device_attribute *attr,	\
-			    char *buf)				\
-{								\
-	struct adm9240_data *data = adm9240_update_device(dev);	\
-	return sprintf(buf, "%d\n", data->value * scale);	\
-}
-show_temp(temp_high, 1000);
-show_temp(temp_hyst, 1000);
-show_temp(temp, 500); /* 0.5'C per bit */
-
-#define set_temp(value, reg)					\
-static ssize_t set_##value(struct device *dev, 			\
-			   struct device_attribute *attr,	\
-			   const char *buf, size_t count)	\
-{								\
-	struct i2c_client *client = to_i2c_client(dev);		\
-	struct adm9240_data *data = adm9240_update_device(dev);	\
-	long temp = simple_strtoul(buf, NULL, 10);		\
-								\
-	down(&data->update_lock);				\
-	data->value = TEMP_TO_REG(temp);			\
-	adm9240_write_value(client, reg, data->value);		\
-	up(&data->update_lock);					\
-	return count;						\
-}
-
-set_temp(temp_high, ADM9240_REG_TEMP_HIGH);
-set_temp(temp_hyst, ADM9240_REG_TEMP_HYST);
-
-static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
-		show_temp_high, set_temp_high);
-static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
-		show_temp_hyst, set_temp_hyst);
 static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
+		show_max, set_max, 0);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
+		show_max, set_max, 1);
 
 /* voltage */
-static ssize_t show_in(struct device *dev, char *buf, int nr)
+static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
+		char *buf)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct adm9240_data *data = adm9240_update_device(dev);
-	return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr));
+	return sprintf(buf, "%d\n", IN_FROM_REG(data->in[attr->index],
+				attr->index));
 }
 
-static ssize_t show_in_min(struct device *dev, char *buf, int nr)
+static ssize_t show_in_min(struct device *dev,
+		struct device_attribute *devattr, char *buf)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct adm9240_data *data = adm9240_update_device(dev);
-	return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr));
+	return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[attr->index],
+				attr->index));
 }
 
-static ssize_t show_in_max(struct device *dev, char *buf, int nr)
+static ssize_t show_in_max(struct device *dev,
+		struct device_attribute *devattr, char *buf)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct adm9240_data *data = adm9240_update_device(dev);
-	return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr));
+	return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[attr->index],
+				attr->index));
 }
 
-static ssize_t set_in_min(struct device *dev, const char *buf,
-		size_t count, int nr)
+static ssize_t set_in_min(struct device *dev,
+		struct device_attribute *devattr,
+		const char *buf, size_t count)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm9240_data *data = i2c_get_clientdata(client);
 	unsigned long val = simple_strtoul(buf, NULL, 10);
 
 	down(&data->update_lock);
-	data->in_min[nr] = IN_TO_REG(val, nr);
-	adm9240_write_value(client, ADM9240_REG_IN_MIN(nr), data->in_min[nr]);
+	data->in_min[attr->index] = IN_TO_REG(val, attr->index);
+	i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MIN(attr->index),
+			data->in_min[attr->index]);
 	up(&data->update_lock);
 	return count;
 }
 
-static ssize_t set_in_max(struct device *dev, const char *buf,
-		size_t count, int nr)
+static ssize_t set_in_max(struct device *dev,
+		struct device_attribute *devattr,
+		const char *buf, size_t count)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm9240_data *data = i2c_get_clientdata(client);
 	unsigned long val = simple_strtoul(buf, NULL, 10);
 
 	down(&data->update_lock);
-	data->in_max[nr] = IN_TO_REG(val, nr);
-	adm9240_write_value(client, ADM9240_REG_IN_MAX(nr), data->in_max[nr]);
+	data->in_max[attr->index] = IN_TO_REG(val, attr->index);
+	i2c_smbus_write_byte_data(client, ADM9240_REG_IN_MAX(attr->index),
+			data->in_max[attr->index]);
 	up(&data->update_lock);
 	return count;
 }
 
-#define show_in_offset(offset)						\
-static ssize_t show_in##offset(struct device *dev,			\
-			       struct device_attribute *attr,		\
-			       char *buf)				\
-{									\
-	return show_in(dev, buf, offset);				\
-}									\
-static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in##offset, NULL);	\
-static ssize_t show_in##offset##_min(struct device *dev,		\
-				     struct device_attribute *attr,	\
-				     char *buf)				\
-{									\
-	return show_in_min(dev, buf, offset);				\
-}									\
-static ssize_t show_in##offset##_max(struct device *dev,		\
-				     struct device_attribute *attr,	\
-				     char *buf)				\
-{									\
-	return show_in_max(dev, buf, offset);				\
-}									\
-static ssize_t								\
-set_in##offset##_min(struct device *dev,				\
-		     struct device_attribute *attr, const char *buf,	\
-		     size_t count)					\
-{									\
-	return set_in_min(dev, buf, count, offset);			\
-}									\
-static ssize_t								\
-set_in##offset##_max(struct device *dev,				\
-		     struct device_attribute *attr, const char *buf,	\
-		     size_t count)					\
-{									\
-	return set_in_max(dev, buf, count, offset);			\
-}									\
-static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR,			\
-		show_in##offset##_min, set_in##offset##_min);		\
-static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR,			\
-		show_in##offset##_max, set_in##offset##_max);
-
-show_in_offset(0);
-show_in_offset(1);
-show_in_offset(2);
-show_in_offset(3);
-show_in_offset(4);
-show_in_offset(5);
+#define vin(nr)							\
+static SENSOR_DEVICE_ATTR(in##nr##_input, S_IRUGO, 		\
+		show_in, NULL, nr);				\
+static SENSOR_DEVICE_ATTR(in##nr##_min, S_IRUGO | S_IWUSR,	\
+		show_in_min, set_in_min, nr);			\
+static SENSOR_DEVICE_ATTR(in##nr##_max, S_IRUGO | S_IWUSR,	\
+		show_in_max, set_in_max, nr);
+
+vin(0);
+vin(1);
+vin(2);
+vin(3);
+vin(4);
+vin(5);
 
 /* fans */
-static ssize_t show_fan(struct device *dev, char *buf, int nr)
+static ssize_t show_fan(struct device *dev,
+		struct device_attribute *devattr, char *buf)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct adm9240_data *data = adm9240_update_device(dev);
-	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
-				1 << data->fan_div[nr]));
+	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index],
+				1 << data->fan_div[attr->index]));
 }
 
-static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
+static ssize_t show_fan_min(struct device *dev,
+		struct device_attribute *devattr, char *buf)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct adm9240_data *data = adm9240_update_device(dev);
-	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
-				1 << data->fan_div[nr]));
+	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[attr->index],
+				1 << data->fan_div[attr->index]));
 }
 
-static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
+static ssize_t show_fan_div(struct device *dev,
+		struct device_attribute *devattr, char *buf)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct adm9240_data *data = adm9240_update_device(dev);
-	return sprintf(buf, "%d\n", 1 << data->fan_div[nr]);
+	return sprintf(buf, "%d\n", 1 << data->fan_div[attr->index]);
 }
 
 /* write new fan div, callers must hold data->update_lock */
@@ -341,16 +319,16 @@ static void adm9240_write_fan_div(struct i2c_client *client, int nr,
 {
 	u8 reg, old, shift = (nr + 2) * 2;
 
-	reg = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV);
+	reg = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
 	old = (reg >> shift) & 3;
 	reg &= ~(3 << shift);
 	reg |= (fan_div << shift);
-	adm9240_write_value(client, ADM9240_REG_VID_FAN_DIV, reg);
+	i2c_smbus_write_byte_data(client, ADM9240_REG_VID_FAN_DIV, reg);
 	dev_dbg(&client->dev, "fan%d clock divider changed from %u "
 			"to %u\n", nr + 1, 1 << old, 1 << fan_div);
 }
 
-/* 
+/*
  * set fan speed low limit:
  *
  * - value is zero: disable fan speed low limit alarm
@@ -361,12 +339,15 @@ static void adm9240_write_fan_div(struct i2c_client *client, int nr,
  * - otherwise: select fan clock divider to suit fan speed low limit,
  *   measurement code may adjust registers to ensure fan speed reading
  */
-static ssize_t set_fan_min(struct device *dev, const char *buf,
-		size_t count, int nr)
+static ssize_t set_fan_min(struct device *dev,
+		struct device_attribute *devattr,
+		const char *buf, size_t count)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm9240_data *data = i2c_get_clientdata(client);
 	unsigned long val = simple_strtoul(buf, NULL, 10);
+	int nr = attr->index;
 	u8 new_div;
 
 	down(&data->update_lock);
@@ -406,50 +387,27 @@ static ssize_t set_fan_min(struct device *dev, const char *buf,
 		data->fan_div[nr] = new_div;
 		adm9240_write_fan_div(client, nr, new_div);
 	}
-	adm9240_write_value(client, ADM9240_REG_FAN_MIN(nr),
+	i2c_smbus_write_byte_data(client, ADM9240_REG_FAN_MIN(nr),
 			data->fan_min[nr]);
 
 	up(&data->update_lock);
 	return count;
 }
 
-#define show_fan_offset(offset)						\
-static ssize_t show_fan_##offset (struct device *dev,			\
-				  struct device_attribute *attr,	\
-				  char *buf)				\
-{									\
-return show_fan(dev, buf, offset - 1);					\
-}									\
-static ssize_t show_fan_##offset##_div (struct device *dev,		\
-					struct device_attribute *attr,	\
-					char *buf)			\
-{									\
-return show_fan_div(dev, buf, offset - 1);				\
-}									\
-static ssize_t show_fan_##offset##_min (struct device *dev,		\
-					struct device_attribute *attr,	\
-					char *buf)			\
-{									\
-return show_fan_min(dev, buf, offset - 1);				\
-}									\
-static ssize_t set_fan_##offset##_min (struct device *dev, 		\
-				       struct device_attribute *attr,	\
-				       const char *buf, size_t count)	\
-{									\
-return set_fan_min(dev, buf, count, offset - 1);			\
-}									\
-static DEVICE_ATTR(fan##offset##_input, S_IRUGO, 			\
-		show_fan_##offset, NULL);				\
-static DEVICE_ATTR(fan##offset##_div, S_IRUGO, 				\
-		show_fan_##offset##_div, NULL);				\
-static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, 		\
-		show_fan_##offset##_min, set_fan_##offset##_min);
-
-show_fan_offset(1);
-show_fan_offset(2);
+#define fan(nr)							\
+static SENSOR_DEVICE_ATTR(fan##nr##_input, S_IRUGO,		\
+		show_fan, NULL, nr - 1);			\
+static SENSOR_DEVICE_ATTR(fan##nr##_div, S_IRUGO,		\
+		show_fan_div, NULL, nr - 1);			\
+static SENSOR_DEVICE_ATTR(fan##nr##_min, S_IRUGO | S_IWUSR,	\
+		show_fan_min, set_fan_min, nr - 1);
+
+fan(1);
+fan(2);
 
 /* alarms */
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_alarms(struct device *dev,
+		struct device_attribute *attr, char *buf)
 {
 	struct adm9240_data *data = adm9240_update_device(dev);
 	return sprintf(buf, "%u\n", data->alarms);
@@ -457,7 +415,8 @@ static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, ch
 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
 
 /* vid */
-static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_vid(struct device *dev,
+		struct device_attribute *attr, char *buf)
 {
 	struct adm9240_data *data = adm9240_update_device(dev);
 	return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
@@ -465,13 +424,16 @@ static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char
 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
 
 /* analog output */
-static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_aout(struct device *dev,
+		struct device_attribute *attr, char *buf)
 {
 	struct adm9240_data *data = adm9240_update_device(dev);
 	return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout));
 }
 
-static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t set_aout(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf, size_t count)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adm9240_data *data = i2c_get_clientdata(client);
@@ -479,20 +441,23 @@ static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const
 
 	down(&data->update_lock);
 	data->aout = AOUT_TO_REG(val);
-	adm9240_write_value(client, ADM9240_REG_ANALOG_OUT, data->aout);
+	i2c_smbus_write_byte_data(client, ADM9240_REG_ANALOG_OUT, data->aout);
 	up(&data->update_lock);
 	return count;
 }
 static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout);
 
 /* chassis_clear */
-static ssize_t chassis_clear(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t chassis_clear(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf, size_t count)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	unsigned long val = simple_strtol(buf, NULL, 10);
 
 	if (val == 1) {
-		adm9240_write_value(client, ADM9240_REG_CHASSIS_CLEAR, 0x80);
+		i2c_smbus_write_byte_data(client,
+				ADM9240_REG_CHASSIS_CLEAR, 0x80);
 		dev_dbg(&client->dev, "chassis intrusion latch cleared\n");
 	}
 	return count;
@@ -513,11 +478,10 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct adm9240_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct adm9240_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
@@ -533,7 +497,7 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (kind < 0) {
 
 		/* verify chip: reg address should match i2c address */
-		if (adm9240_read_value(new_client, ADM9240_REG_I2C_ADDR)
+		if (i2c_smbus_read_byte_data(new_client, ADM9240_REG_I2C_ADDR)
 				!= address) {
 			dev_err(&adapter->dev, "detect fail: address match, "
 					"0x%02x\n", address);
@@ -541,8 +505,8 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
 		}
 
 		/* check known chip manufacturer */
-		man_id = adm9240_read_value(new_client, ADM9240_REG_MAN_ID);
-
+		man_id = i2c_smbus_read_byte_data(new_client,
+				ADM9240_REG_MAN_ID);
 		if (man_id == 0x23) {
 			kind = adm9240;
 		} else if (man_id == 0xda) {
@@ -556,7 +520,8 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
 		}
 
 		/* successful detect, print chip info */
-		die_rev = adm9240_read_value(new_client, ADM9240_REG_DIE_REV);
+		die_rev = i2c_smbus_read_byte_data(new_client,
+				ADM9240_REG_DIE_REV);
 		dev_info(&adapter->dev, "found %s revision %u\n",
 				man_id == 0x23 ? "ADM9240" :
 				man_id == 0xda ? "DS1780" : "LM81", die_rev);
@@ -588,33 +553,59 @@ static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
 		goto exit_detach;
 	}
 
-	device_create_file(&new_client->dev, &dev_attr_in0_input);
-	device_create_file(&new_client->dev, &dev_attr_in0_min);
-	device_create_file(&new_client->dev, &dev_attr_in0_max);
-	device_create_file(&new_client->dev, &dev_attr_in1_input);
-	device_create_file(&new_client->dev, &dev_attr_in1_min);
-	device_create_file(&new_client->dev, &dev_attr_in1_max);
-	device_create_file(&new_client->dev, &dev_attr_in2_input);
-	device_create_file(&new_client->dev, &dev_attr_in2_min);
-	device_create_file(&new_client->dev, &dev_attr_in2_max);
-	device_create_file(&new_client->dev, &dev_attr_in3_input);
-	device_create_file(&new_client->dev, &dev_attr_in3_min);
-	device_create_file(&new_client->dev, &dev_attr_in3_max);
-	device_create_file(&new_client->dev, &dev_attr_in4_input);
-	device_create_file(&new_client->dev, &dev_attr_in4_min);
-	device_create_file(&new_client->dev, &dev_attr_in4_max);
-	device_create_file(&new_client->dev, &dev_attr_in5_input);
-	device_create_file(&new_client->dev, &dev_attr_in5_min);
-	device_create_file(&new_client->dev, &dev_attr_in5_max);
-	device_create_file(&new_client->dev, &dev_attr_temp1_max);
-	device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in0_input.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in0_min.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in0_max.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in1_input.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in1_min.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in1_max.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in2_input.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in2_min.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in2_max.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in3_input.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in3_min.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in3_max.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in4_input.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in4_min.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in4_max.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in5_input.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in5_min.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_in5_max.dev_attr);
 	device_create_file(&new_client->dev, &dev_attr_temp1_input);
-	device_create_file(&new_client->dev, &dev_attr_fan1_input);
-	device_create_file(&new_client->dev, &dev_attr_fan1_div);
-	device_create_file(&new_client->dev, &dev_attr_fan1_min);
-	device_create_file(&new_client->dev, &dev_attr_fan2_input);
-	device_create_file(&new_client->dev, &dev_attr_fan2_div);
-	device_create_file(&new_client->dev, &dev_attr_fan2_min);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_temp1_max.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_temp1_max_hyst.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_fan1_input.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_fan1_div.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_fan1_min.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_fan2_input.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_fan2_div.dev_attr);
+	device_create_file(&new_client->dev,
+			&sensor_dev_attr_fan2_min.dev_attr);
 	device_create_file(&new_client->dev, &dev_attr_alarms);
 	device_create_file(&new_client->dev, &dev_attr_aout_output);
 	device_create_file(&new_client->dev, &dev_attr_chassis_clear);
@@ -654,8 +645,8 @@ static int adm9240_detach_client(struct i2c_client *client)
 static void adm9240_init_client(struct i2c_client *client)
 {
 	struct adm9240_data *data = i2c_get_clientdata(client);
-	u8 conf = adm9240_read_value(client, ADM9240_REG_CONFIG);
-	u8 mode = adm9240_read_value(client, ADM9240_REG_TEMP_CONF) & 3;
+	u8 conf = i2c_smbus_read_byte_data(client, ADM9240_REG_CONFIG);
+	u8 mode = i2c_smbus_read_byte_data(client, ADM9240_REG_TEMP_CONF) & 3;
 
 	data->vrm = vid_which_vrm(); /* need this to report vid as mV */
 
@@ -672,18 +663,22 @@ static void adm9240_init_client(struct i2c_client *client)
 
 		for (i = 0; i < 6; i++)
 		{
-			adm9240_write_value(client,
+			i2c_smbus_write_byte_data(client,
 					ADM9240_REG_IN_MIN(i), 0);
-			adm9240_write_value(client,
+			i2c_smbus_write_byte_data(client,
 					ADM9240_REG_IN_MAX(i), 255);
 		}
-		adm9240_write_value(client, ADM9240_REG_FAN_MIN(0), 255);
-		adm9240_write_value(client, ADM9240_REG_FAN_MIN(1), 255);
-		adm9240_write_value(client, ADM9240_REG_TEMP_HIGH, 127);
-		adm9240_write_value(client, ADM9240_REG_TEMP_HYST, 127);
+		i2c_smbus_write_byte_data(client,
+				ADM9240_REG_FAN_MIN(0), 255);
+		i2c_smbus_write_byte_data(client,
+				ADM9240_REG_FAN_MIN(1), 255);
+		i2c_smbus_write_byte_data(client,
+				ADM9240_REG_TEMP_MAX(0), 127);
+		i2c_smbus_write_byte_data(client,
+				ADM9240_REG_TEMP_MAX(1), 127);
 
 		/* start measurement cycle */
-		adm9240_write_value(client, ADM9240_REG_CONFIG, 1);
+		i2c_smbus_write_byte_data(client, ADM9240_REG_CONFIG, 1);
 
 		dev_info(&client->dev, "cold start: config was 0x%02x "
 				"mode %u\n", conf, mode);
@@ -704,25 +699,25 @@ static struct adm9240_data *adm9240_update_device(struct device *dev)
 
 		for (i = 0; i < 6; i++) /* read voltages */
 		{
-			data->in[i] = adm9240_read_value(client,
+			data->in[i] = i2c_smbus_read_byte_data(client,
 					ADM9240_REG_IN(i));
 		}
-		data->alarms = adm9240_read_value(client,
+		data->alarms = i2c_smbus_read_byte_data(client,
 					ADM9240_REG_INT(0)) |
-					adm9240_read_value(client,
+					i2c_smbus_read_byte_data(client,
 					ADM9240_REG_INT(1)) << 8;
 
 		/* read temperature: assume temperature changes less than
 		 * 0.5'C per two measurement cycles thus ignore possible
 		 * but unlikely aliasing error on lsb reading. --Grant */
-		data->temp = ((adm9240_read_value(client,
+		data->temp = ((i2c_smbus_read_byte_data(client,
 					ADM9240_REG_TEMP) << 8) |
-					adm9240_read_value(client,
+					i2c_smbus_read_byte_data(client,
 					ADM9240_REG_TEMP_CONF)) / 128;
 
 		for (i = 0; i < 2; i++) /* read fans */
 		{
-			data->fan[i] = adm9240_read_value(client,
+			data->fan[i] = i2c_smbus_read_byte_data(client,
 					ADM9240_REG_FAN(i));
 
 			/* adjust fan clock divider on overflow */
@@ -747,30 +742,30 @@ static struct adm9240_data *adm9240_update_device(struct device *dev)
 
 		for (i = 0; i < 6; i++)
 		{
-			data->in_min[i] = adm9240_read_value(client,
+			data->in_min[i] = i2c_smbus_read_byte_data(client,
 					ADM9240_REG_IN_MIN(i));
-			data->in_max[i] = adm9240_read_value(client,
+			data->in_max[i] = i2c_smbus_read_byte_data(client,
 					ADM9240_REG_IN_MAX(i));
 		}
 		for (i = 0; i < 2; i++)
 		{
-			data->fan_min[i] = adm9240_read_value(client,
+			data->fan_min[i] = i2c_smbus_read_byte_data(client,
 					ADM9240_REG_FAN_MIN(i));
 		}
-		data->temp_high = adm9240_read_value(client,
-				ADM9240_REG_TEMP_HIGH);
-		data->temp_hyst = adm9240_read_value(client,
-				ADM9240_REG_TEMP_HYST);
+		data->temp_max[0] = i2c_smbus_read_byte_data(client,
+				ADM9240_REG_TEMP_MAX(0));
+		data->temp_max[1] = i2c_smbus_read_byte_data(client,
+				ADM9240_REG_TEMP_MAX(1));
 
 		/* read fan divs and 5-bit VID */
-		i = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV);
+		i = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
 		data->fan_div[0] = (i >> 4) & 3;
 		data->fan_div[1] = (i >> 6) & 3;
 		data->vid = i & 0x0f;
-		data->vid |= (adm9240_read_value(client,
+		data->vid |= (i2c_smbus_read_byte_data(client,
 					ADM9240_REG_VID4) & 1) << 4;
 		/* read analog out */
-		data->aout = adm9240_read_value(client,
+		data->aout = i2c_smbus_read_byte_data(client,
 				ADM9240_REG_ANALOG_OUT);
 
 		data->last_updated_config = jiffies;

drivers/hwmon/asb100.c

@@ -629,19 +629,17 @@ static int asb100_detect_subclients(struct i2c_adapter *adapter, int address,
 	int i, id, err;
 	struct asb100_data *data = i2c_get_clientdata(new_client);
 
-	data->lm75[0] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 	if (!(data->lm75[0])) {
 		err = -ENOMEM;
 		goto ERROR_SC_0;
 	}
-	memset(data->lm75[0], 0x00, sizeof(struct i2c_client));
 
-	data->lm75[1] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 	if (!(data->lm75[1])) {
 		err = -ENOMEM;
 		goto ERROR_SC_1;
 	}
-	memset(data->lm75[1], 0x00, sizeof(struct i2c_client));
 
 	id = i2c_adapter_id(adapter);
 
@@ -724,12 +722,11 @@ static int asb100_detect(struct i2c_adapter *adapter, int address, int kind)
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access asb100_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct asb100_data), GFP_KERNEL))) {
-		pr_debug("asb100.o: detect failed, kmalloc failed!\n");
+	if (!(data = kzalloc(sizeof(struct asb100_data), GFP_KERNEL))) {
+		pr_debug("asb100.o: detect failed, kzalloc failed!\n");
 		err = -ENOMEM;
 		goto ERROR0;
 	}
-	memset(data, 0, sizeof(struct asb100_data));
 
 	new_client = &data->client;
 	init_MUTEX(&data->lock);

drivers/hwmon/atxp1.c

@@ -253,6 +253,8 @@ static DEVICE_ATTR(gpio2, S_IRUGO | S_IWUSR, atxp1_showgpio2, atxp1_storegpio2);
 
 static int atxp1_attach_adapter(struct i2c_adapter *adapter)
 {
+	if (!(adapter->class & I2C_CLASS_HWMON))
+		return 0;
 	return i2c_probe(adapter, &addr_data, &atxp1_detect);
 };
 
@@ -266,12 +268,11 @@ static int atxp1_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct atxp1_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct atxp1_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
 
-	memset(data, 0, sizeof(struct atxp1_data));
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
 

drivers/hwmon/ds1621.c

@@ -180,12 +180,14 @@ static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, set_temp_max);
 
 static int ds1621_attach_adapter(struct i2c_adapter *adapter)
 {
+	if (!(adapter->class & I2C_CLASS_HWMON))
+		return 0;
 	return i2c_probe(adapter, &addr_data, ds1621_detect);
 }
 
 /* This function is called by i2c_probe */
-int ds1621_detect(struct i2c_adapter *adapter, int address,
-                  int kind)
+static int ds1621_detect(struct i2c_adapter *adapter, int address,
+			 int kind)
 {
 	int conf, temp;
 	struct i2c_client *new_client;
@@ -200,11 +202,10 @@ int ds1621_detect(struct i2c_adapter *adapter, int address,
 	/* OK. For now, we presume we have a valid client. We now create the
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access ds1621_{read,write}_value. */
-	if (!(data = kmalloc(sizeof(struct ds1621_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct ds1621_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct ds1621_data));
 	
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/fscher.c

@@ -303,11 +303,10 @@ static int fscher_detect(struct i2c_adapter *adapter, int address, int kind)
 	/* OK. For now, we presume we have a valid client. We now create the
 	 * client structure, even though we cannot fill it completely yet.
 	 * But it allows us to access i2c_smbus_read_byte_data. */
-	if (!(data = kmalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
   	}
-	memset(data, 0, sizeof(struct fscher_data));
 
 	/* The common I2C client data is placed right before the
 	 * Hermes-specific data. */

drivers/hwmon/fscpos.c

@@ -438,7 +438,7 @@ static int fscpos_attach_adapter(struct i2c_adapter *adapter)
 	return i2c_probe(adapter, &addr_data, fscpos_detect);
 }
 
-int fscpos_detect(struct i2c_adapter *adapter, int address, int kind)
+static int fscpos_detect(struct i2c_adapter *adapter, int address, int kind)
 {
 	struct i2c_client *new_client;
 	struct fscpos_data *data;
@@ -453,11 +453,10 @@ int fscpos_detect(struct i2c_adapter *adapter, int address, int kind)
 	 * But it allows us to access fscpos_{read,write}_value.
 	 */
 
-	if (!(data = kmalloc(sizeof(struct fscpos_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct fscpos_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct fscpos_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/gl518sm.c

@@ -365,11 +365,10 @@ static int gl518_detect(struct i2c_adapter *adapter, int address, int kind)
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access gl518_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct gl518_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct gl518_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct gl518_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/gl520sm.c

@@ -536,11 +536,10 @@ static int gl520_detect(struct i2c_adapter *adapter, int address, int kind)
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access gl520_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct gl520_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct gl520_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/it87.c

@@ -2,7 +2,7 @@
     it87.c - Part of lm_sensors, Linux kernel modules for hardware
              monitoring.
 
-    Supports: IT8705F  Super I/O chip w/LPC interface & SMBus
+    Supports: IT8705F  Super I/O chip w/LPC interface
               IT8712F  Super I/O chip w/LPC interface & SMBus
               Sis950   A clone of the IT8705F
 
@@ -47,7 +47,7 @@
 /* Addresses to scan */
 static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
 					0x2e, 0x2f, I2C_CLIENT_END };
-static unsigned short isa_address = 0x290;
+static unsigned short isa_address;
 
 /* Insmod parameters */
 I2C_CLIENT_INSMOD_2(it87, it8712);
@@ -706,7 +706,7 @@ static int it87_isa_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* SuperIO detection - will change isa_address if a chip is found */
-static int __init it87_find(int *address)
+static int __init it87_find(unsigned short *address)
 {
 	int err = -ENODEV;
 
@@ -738,7 +738,7 @@ exit:
 }
 
 /* This function is called by i2c_probe */
-int it87_detect(struct i2c_adapter *adapter, int address, int kind)
+static int it87_detect(struct i2c_adapter *adapter, int address, int kind)
 {
 	int i;
 	struct i2c_client *new_client;
@@ -757,42 +757,14 @@ int it87_detect(struct i2c_adapter *adapter, int address, int kind)
 		if (!request_region(address, IT87_EXTENT, it87_isa_driver.name))
 			goto ERROR0;
 
-	/* Probe whether there is anything available on this address. Already
-	   done for SMBus and Super-I/O clients */
-	if (kind < 0) {
-		if (is_isa && !chip_type) {
-#define REALLY_SLOW_IO
-			/* We need the timeouts for at least some IT87-like chips. But only
-			   if we read 'undefined' registers. */
-			i = inb_p(address + 1);
-			if (inb_p(address + 2) != i
-			 || inb_p(address + 3) != i
-			 || inb_p(address + 7) != i) {
-		 		err = -ENODEV;
-				goto ERROR1;
-			}
-#undef REALLY_SLOW_IO
-
-			/* Let's just hope nothing breaks here */
-			i = inb_p(address + 5) & 0x7f;
-			outb_p(~i & 0x7f, address + 5);
-			if ((inb_p(address + 5) & 0x7f) != (~i & 0x7f)) {
-				outb_p(i, address + 5);
-				err = -ENODEV;
-				goto ERROR1;
-			}
-		}
-	}
-
-	/* OK. For now, we presume we have a valid client. We now create the
+	/* For now, we presume we have a valid client. We create the
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access it87_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct it87_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto ERROR1;
 	}
-	memset(data, 0, sizeof(struct it87_data));
 
 	new_client = &data->client;
 	if (is_isa)
@@ -1182,20 +1154,18 @@ static struct it87_data *it87_update_device(struct device *dev)
 
 static int __init sm_it87_init(void)
 {
-	int addr, res;
-
-	if (!it87_find(&addr)) {
-		isa_address = addr;
-	}
+	int res;
 
 	res = i2c_add_driver(&it87_driver);
 	if (res)
 		return res;
 
-	res = i2c_isa_add_driver(&it87_isa_driver);
-	if (res) {
-		i2c_del_driver(&it87_driver);
-		return res;
+	if (!it87_find(&isa_address)) {
+		res = i2c_isa_add_driver(&it87_isa_driver);
+		if (res) {
+			i2c_del_driver(&it87_driver);
+			return res;
+		}
 	}
 
 	return 0;

drivers/hwmon/lm63.c

@@ -375,11 +375,10 @@ static int lm63_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct lm63_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm63_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct lm63_data));
 
 	/* The common I2C client data is placed right before the
 	   LM63-specific data. */

drivers/hwmon/lm75.c

@@ -127,11 +127,10 @@ static int lm75_detect(struct i2c_adapter *adapter, int address, int kind)
 	/* OK. For now, we presume we have a valid client. We now create the
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access lm75_{read,write}_value. */
-	if (!(data = kmalloc(sizeof(struct lm75_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm75_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct lm75_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/lm77.c

@@ -226,11 +226,10 @@ static int lm77_detect(struct i2c_adapter *adapter, int address, int kind)
 	/* OK. For now, we presume we have a valid client. We now create the
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access lm77_{read,write}_value. */
-	if (!(data = kmalloc(sizeof(struct lm77_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm77_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct lm77_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/lm78.c

@@ -480,7 +480,7 @@ static int lm78_isa_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* This function is called by i2c_probe */
-int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
+static int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
 {
 	int i, err;
 	struct i2c_client *new_client;
@@ -540,11 +540,10 @@ int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access lm78_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct lm78_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto ERROR1;
 	}
-	memset(data, 0, sizeof(struct lm78_data));
 
 	new_client = &data->client;
 	if (is_isa)
@@ -726,7 +725,6 @@ static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value)
 		return i2c_smbus_write_byte_data(client, reg, value);
 }
 
-/* Called when we have found a new LM78. It should set limits, etc. */
 static void lm78_init_client(struct i2c_client *client)
 {
 	u8 config = lm78_read_value(client, LM78_REG_CONFIG);

drivers/hwmon/lm80.c

@@ -393,7 +393,7 @@ static int lm80_attach_adapter(struct i2c_adapter *adapter)
 	return i2c_probe(adapter, &addr_data, lm80_detect);
 }
 
-int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
+static int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
 {
 	int i, cur;
 	struct i2c_client *new_client;
@@ -407,11 +407,10 @@ int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
 	/* OK. For now, we presume we have a valid client. We now create the
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access lm80_{read,write}_value. */
-	if (!(data = kmalloc(sizeof(struct lm80_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm80_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct lm80_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/lm83.c

@@ -230,11 +230,10 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct lm83_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm83_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct lm83_data));
 
 	/* The common I2C client data is placed right after the
 	 * LM83-specific data. */

drivers/hwmon/lm85.c

@@ -1007,14 +1007,14 @@ temp_auto(1);
 temp_auto(2);
 temp_auto(3);
 
-int lm85_attach_adapter(struct i2c_adapter *adapter)
+static int lm85_attach_adapter(struct i2c_adapter *adapter)
 {
 	if (!(adapter->class & I2C_CLASS_HWMON))
 		return 0;
 	return i2c_probe(adapter, &addr_data, lm85_detect);
 }
 
-int lm85_detect(struct i2c_adapter *adapter, int address,
+static int lm85_detect(struct i2c_adapter *adapter, int address,
 		int kind)
 {
 	int company, verstep ;
@@ -1033,11 +1033,10 @@ int lm85_detect(struct i2c_adapter *adapter, int address,
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access lm85_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto ERROR0;
 	}
-	memset(data, 0, sizeof(struct lm85_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
@@ -1236,7 +1235,7 @@ int lm85_detect(struct i2c_adapter *adapter, int address,
 	return err;
 }
 
-int lm85_detach_client(struct i2c_client *client)
+static int lm85_detach_client(struct i2c_client *client)
 {
 	struct lm85_data *data = i2c_get_clientdata(client);
 	hwmon_device_unregister(data->class_dev);
@@ -1246,7 +1245,7 @@ int lm85_detach_client(struct i2c_client *client)
 }
 
 
-int lm85_read_value(struct i2c_client *client, u8 reg)
+static int lm85_read_value(struct i2c_client *client, u8 reg)
 {
 	int res;
 
@@ -1276,7 +1275,7 @@ int lm85_read_value(struct i2c_client *client, u8 reg)
 	return res ;
 }
 
-int lm85_write_value(struct i2c_client *client, u8 reg, int value)
+static int lm85_write_value(struct i2c_client *client, u8 reg, int value)
 {
 	int res ;
 
@@ -1305,7 +1304,7 @@ int lm85_write_value(struct i2c_client *client, u8 reg, int value)
 	return res ;
 }
 
-void lm85_init_client(struct i2c_client *client)
+static void lm85_init_client(struct i2c_client *client)
 {
 	int value;
 	struct lm85_data *data = i2c_get_clientdata(client);

drivers/hwmon/lm87.c

@@ -554,11 +554,10 @@ static int lm87_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct lm87_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct lm87_data));
 
 	/* The common I2C client data is placed right before the
 	   LM87-specific data. */

drivers/hwmon/lm90.c

@@ -31,7 +31,7 @@
  * Devices. That chip is similar to the LM90, with a few differences
  * that are not handled by this driver. Complete datasheet can be
  * obtained from Analog's website at:
- *   http://products.analog.com/products/info.asp?product=ADM1032
+ *   http://www.analog.com/en/prod/0,2877,ADM1032,00.html
  * Among others, it has a higher accuracy than the LM90, much like the
  * LM86 does.
  *
@@ -49,7 +49,7 @@
  * register values are decoded differently) it is ignored by this
  * driver. Complete datasheet can be obtained from Analog's website
  * at:
- *   http://products.analog.com/products/info.asp?product=ADT7461
+ *   http://www.analog.com/en/prod/0,2877,ADT7461,00.html
  *
  * Since the LM90 was the first chipset supported by this driver, most
  * comments will refer to this chipset, but are actually general and
@@ -83,10 +83,10 @@
  * Addresses to scan
  * Address is fully defined internally and cannot be changed except for
  * MAX6659.
- * LM86, LM89, LM90, LM99, ADM1032, MAX6657 and MAX6658 have address 0x4c.
- * LM89-1, and LM99-1 have address 0x4d.
+ * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, MAX6657 and MAX6658
+ * have address 0x4c.
+ * ADM1032-2, ADT7461-2, LM89-1, and LM99-1 have address 0x4d.
  * MAX6659 can have address 0x4c, 0x4d or 0x4e (unsupported).
- * ADT7461 always has address 0x4c.
  */
 
 static unsigned short normal_i2c[] = { 0x4c, 0x4d, I2C_CLIENT_END };
@@ -345,10 +345,74 @@ static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst,
 static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL, 4);
 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
 
+/* pec used for ADM1032 only */
+static ssize_t show_pec(struct device *dev, struct device_attribute *dummy,
+			char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	return sprintf(buf, "%d\n", !!(client->flags & I2C_CLIENT_PEC));
+}
+
+static ssize_t set_pec(struct device *dev, struct device_attribute *dummy,
+		       const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	long val = simple_strtol(buf, NULL, 10);
+
+	switch (val) {
+	case 0:
+		client->flags &= ~I2C_CLIENT_PEC;
+		break;
+	case 1:
+		client->flags |= I2C_CLIENT_PEC;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return count;
+}
+
+static DEVICE_ATTR(pec, S_IWUSR | S_IRUGO, show_pec, set_pec);
+
 /*
  * Real code
  */
 
+/* The ADM1032 supports PEC but not on write byte transactions, so we need
+   to explicitely ask for a transaction without PEC. */
+static inline s32 adm1032_write_byte(struct i2c_client *client, u8 value)
+{
+	return i2c_smbus_xfer(client->adapter, client->addr,
+			      client->flags & ~I2C_CLIENT_PEC,
+			      I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL);
+}
+
+/* It is assumed that client->update_lock is held (unless we are in
+   detection or initialization steps). This matters when PEC is enabled,
+   because we don't want the address pointer to change between the write
+   byte and the read byte transactions. */
+static int lm90_read_reg(struct i2c_client* client, u8 reg, u8 *value)
+{
+	int err;
+
+ 	if (client->flags & I2C_CLIENT_PEC) {
+ 		err = adm1032_write_byte(client, reg);
+ 		if (err >= 0)
+ 			err = i2c_smbus_read_byte(client);
+ 	} else
+ 		err = i2c_smbus_read_byte_data(client, reg);
+
+	if (err < 0) {
+		dev_warn(&client->dev, "Register %#02x read failed (%d)\n",
+			 reg, err);
+		return err;
+	}
+	*value = err;
+
+	return 0;
+}
+
 static int lm90_attach_adapter(struct i2c_adapter *adapter)
 {
 	if (!(adapter->class & I2C_CLASS_HWMON))
@@ -370,11 +434,10 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct lm90_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm90_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct lm90_data));
 
 	/* The common I2C client data is placed right before the
 	   LM90-specific data. */
@@ -403,20 +466,22 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (kind < 0) { /* detection and identification */
 		u8 man_id, chip_id, reg_config1, reg_convrate;
 
-		man_id = i2c_smbus_read_byte_data(new_client,
-			 LM90_REG_R_MAN_ID);
-		chip_id = i2c_smbus_read_byte_data(new_client,
-			  LM90_REG_R_CHIP_ID);
-		reg_config1 = i2c_smbus_read_byte_data(new_client,
-			      LM90_REG_R_CONFIG1);
-		reg_convrate = i2c_smbus_read_byte_data(new_client,
-			       LM90_REG_R_CONVRATE);
+		if (lm90_read_reg(new_client, LM90_REG_R_MAN_ID,
+				  &man_id) < 0
+		 || lm90_read_reg(new_client, LM90_REG_R_CHIP_ID,
+		 		  &chip_id) < 0
+		 || lm90_read_reg(new_client, LM90_REG_R_CONFIG1,
+		 		  &reg_config1) < 0
+		 || lm90_read_reg(new_client, LM90_REG_R_CONVRATE,
+		 		  &reg_convrate) < 0)
+			goto exit_free;
 		
 		if (man_id == 0x01) { /* National Semiconductor */
 			u8 reg_config2;
 
-			reg_config2 = i2c_smbus_read_byte_data(new_client,
-				      LM90_REG_R_CONFIG2);
+			if (lm90_read_reg(new_client, LM90_REG_R_CONFIG2,
+					  &reg_config2) < 0)
+				goto exit_free;
 
 			if ((reg_config1 & 0x2A) == 0x00
 			 && (reg_config2 & 0xF8) == 0x00
@@ -435,14 +500,12 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
 			}
 		} else
 		if (man_id == 0x41) { /* Analog Devices */
-			if (address == 0x4C
-			 && (chip_id & 0xF0) == 0x40 /* ADM1032 */
+			if ((chip_id & 0xF0) == 0x40 /* ADM1032 */
 			 && (reg_config1 & 0x3F) == 0x00
 			 && reg_convrate <= 0x0A) {
 				kind = adm1032;
 			} else
-			if (address == 0x4c
-			 && chip_id == 0x51 /* ADT7461 */
+			if (chip_id == 0x51 /* ADT7461 */
 			 && (reg_config1 & 0x1F) == 0x00 /* check compat mode */
 			 && reg_convrate <= 0x0A) {
 				kind = adt7461;
@@ -477,6 +540,10 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
 		name = "lm90";
 	} else if (kind == adm1032) {
 		name = "adm1032";
+		/* The ADM1032 supports PEC, but only if combined
+		   transactions are not used. */
+		if (i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
+			new_client->flags |= I2C_CLIENT_PEC;
 	} else if (kind == lm99) {
 		name = "lm99";
 	} else if (kind == lm86) {
@@ -529,6 +596,9 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
 			   &sensor_dev_attr_temp2_crit_hyst.dev_attr);
 	device_create_file(&new_client->dev, &dev_attr_alarms);
 
+	if (new_client->flags & I2C_CLIENT_PEC)
+		device_create_file(&new_client->dev, &dev_attr_pec);
+
 	return 0;
 
 exit_detach:
@@ -548,7 +618,10 @@ static void lm90_init_client(struct i2c_client *client)
 	 */
 	i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE,
 				  5); /* 2 Hz */
-	config = i2c_smbus_read_byte_data(client, LM90_REG_R_CONFIG1);
+	if (lm90_read_reg(client, LM90_REG_R_CONFIG1, &config) < 0) {
+		dev_warn(&client->dev, "Initialization failed!\n");
+		return;
+	}
 	if (config & 0x40)
 		i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
 					  config & 0xBF); /* run */
@@ -576,21 +649,15 @@ static struct lm90_data *lm90_update_device(struct device *dev)
 	down(&data->update_lock);
 
 	if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
-		u8 oldh, newh;
+		u8 oldh, newh, l;
 
 		dev_dbg(&client->dev, "Updating lm90 data.\n");
-		data->temp8[0] = i2c_smbus_read_byte_data(client,
-				 LM90_REG_R_LOCAL_TEMP);
-		data->temp8[1] = i2c_smbus_read_byte_data(client,
-				 LM90_REG_R_LOCAL_LOW);
-		data->temp8[2] = i2c_smbus_read_byte_data(client,
-				 LM90_REG_R_LOCAL_HIGH);
-		data->temp8[3] = i2c_smbus_read_byte_data(client,
-				 LM90_REG_R_LOCAL_CRIT);
-		data->temp8[4] = i2c_smbus_read_byte_data(client,
-				 LM90_REG_R_REMOTE_CRIT);
-		data->temp_hyst = i2c_smbus_read_byte_data(client,
-				  LM90_REG_R_TCRIT_HYST);
+		lm90_read_reg(client, LM90_REG_R_LOCAL_TEMP, &data->temp8[0]);
+		lm90_read_reg(client, LM90_REG_R_LOCAL_LOW, &data->temp8[1]);
+		lm90_read_reg(client, LM90_REG_R_LOCAL_HIGH, &data->temp8[2]);
+		lm90_read_reg(client, LM90_REG_R_LOCAL_CRIT, &data->temp8[3]);
+		lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT, &data->temp8[4]);
+		lm90_read_reg(client, LM90_REG_R_TCRIT_HYST, &data->temp_hyst);
 
 		/*
 		 * There is a trick here. We have to read two registers to
@@ -606,36 +673,20 @@ static struct lm90_data *lm90_update_device(struct device *dev)
 		 * then we have a valid reading. Else we have to read the low
 		 * byte again, and now we believe we have a correct reading.
 		 */
-		oldh = i2c_smbus_read_byte_data(client,
-		       LM90_REG_R_REMOTE_TEMPH);
-		data->temp11[0] = i2c_smbus_read_byte_data(client,
-				  LM90_REG_R_REMOTE_TEMPL);
-		newh = i2c_smbus_read_byte_data(client,
-		       LM90_REG_R_REMOTE_TEMPH);
-		if (newh != oldh) {
-			data->temp11[0] = i2c_smbus_read_byte_data(client,
-					  LM90_REG_R_REMOTE_TEMPL);
-#ifdef DEBUG
-			oldh = i2c_smbus_read_byte_data(client,
-			       LM90_REG_R_REMOTE_TEMPH);
-			/* oldh is actually newer */
-			if (newh != oldh)
-				dev_warn(&client->dev, "Remote temperature may be "
-					 "wrong.\n");
-#endif
-		}
-		data->temp11[0] |= (newh << 8);
-
-		data->temp11[1] = (i2c_smbus_read_byte_data(client,
-				   LM90_REG_R_REMOTE_LOWH) << 8) +
-				   i2c_smbus_read_byte_data(client,
-				   LM90_REG_R_REMOTE_LOWL);
-		data->temp11[2] = (i2c_smbus_read_byte_data(client,
-				   LM90_REG_R_REMOTE_HIGHH) << 8) +
-				   i2c_smbus_read_byte_data(client,
-				   LM90_REG_R_REMOTE_HIGHL);
-		data->alarms = i2c_smbus_read_byte_data(client,
-			       LM90_REG_R_STATUS);
+		if (lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPH, &oldh) == 0
+		 && lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPL, &l) == 0
+		 && lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPH, &newh) == 0
+		 && (newh == oldh
+		  || lm90_read_reg(client, LM90_REG_R_REMOTE_TEMPL, &l) == 0))
+			data->temp11[0] = (newh << 8) | l;
+
+		if (lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH, &newh) == 0
+		 && lm90_read_reg(client, LM90_REG_R_REMOTE_LOWL, &l) == 0)
+			data->temp11[1] = (newh << 8) | l;
+		if (lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH, &newh) == 0
+		 && lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL, &l) == 0)
+			data->temp11[2] = (newh << 8) | l;
+		lm90_read_reg(client, LM90_REG_R_STATUS, &data->alarms);
 
 		data->last_updated = jiffies;
 		data->valid = 1;

drivers/hwmon/lm92.c

@@ -300,11 +300,10 @@ static int lm92_detect(struct i2c_adapter *adapter, int address, int kind)
 					    | I2C_FUNC_SMBUS_WORD_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct lm92_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct lm92_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct lm92_data));
 
 	/* Fill in enough client fields so that we can read from the chip,
 	   which is required for identication */

drivers/hwmon/max1619.c

@@ -197,11 +197,10 @@ static int max1619_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct max1619_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct max1619_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct max1619_data));
 
 	/* The common I2C client data is placed right before the
 	   MAX1619-specific data. */

drivers/hwmon/pc87360.c

@@ -754,9 +754,8 @@ static int pc87360_detect(struct i2c_adapter *adapter)
 	const char *name = "pc87360";
 	int use_thermistors = 0;
 
-	if (!(data = kmalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
+	if (!(data = kzalloc(sizeof(struct pc87360_data), GFP_KERNEL)))
 		return -ENOMEM;
-	memset(data, 0x00, sizeof(struct pc87360_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/sis5595.c

@@ -518,11 +518,10 @@ static int sis5595_detect(struct i2c_adapter *adapter)
 			goto exit_release;
 	}
 
-	if (!(data = kmalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit_release;
 	}
-	memset(data, 0, sizeof(struct sis5595_data));
 
 	new_client = &data->client;
 	new_client->addr = address;

drivers/hwmon/smsc47b397.c

@@ -244,11 +244,10 @@ static int smsc47b397_detect(struct i2c_adapter *adapter)
 		return -EBUSY;
 	}
 
-	if (!(data = kmalloc(sizeof(struct smsc47b397_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct smsc47b397_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto error_release;
 	}
-	memset(data, 0x00, sizeof(struct smsc47b397_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
@@ -299,7 +298,7 @@ static int __init smsc47b397_find(unsigned short *addr)
 	superio_enter();
 	id = superio_inb(SUPERIO_REG_DEVID);
 
-	if (id != 0x6f) {
+	if ((id != 0x6f) && (id != 0x81)) {
 		superio_exit();
 		return -ENODEV;
 	}
@@ -310,8 +309,9 @@ static int __init smsc47b397_find(unsigned short *addr)
 	*addr = (superio_inb(SUPERIO_REG_BASE_MSB) << 8)
 		 |  superio_inb(SUPERIO_REG_BASE_LSB);
 
-	printk(KERN_INFO "smsc47b397: found SMSC LPC47B397-NC "
-		"(base address 0x%04x, revision %u)\n", *addr, rev);
+	printk(KERN_INFO "smsc47b397: found SMSC %s "
+		"(base address 0x%04x, revision %u)\n",
+		id == 0x81 ? "SCH5307-NS" : "LPC47B397-NC", *addr, rev);
 
 	superio_exit();
 	return 0;

drivers/hwmon/smsc47m1.c

@@ -3,7 +3,7 @@
                  for hardware monitoring
 
     Supports the SMSC LPC47B27x, LPC47M10x, LPC47M13x, LPC47M14x,
-    LPC47M15x and LPC47M192 Super-I/O chips.
+    LPC47M15x, LPC47M192 and LPC47M997 Super-I/O chips.
 
     Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
     Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
@@ -356,6 +356,8 @@ static int __init smsc47m1_find(unsigned short *addr)
 	 * 0x5F) and LPC47B27x (device id 0x51) have fan control.
 	 * The LPC47M15x and LPC47M192 chips "with hardware monitoring block"
 	 * can do much more besides (device id 0x60).
+	 * The LPC47M997 is undocumented, but seems to be compatible with
+	 * the LPC47M192, and has the same device id.
 	 */
 	if (val == 0x51)
 		printk(KERN_INFO "smsc47m1: Found SMSC LPC47B27x\n");
@@ -364,7 +366,8 @@ static int __init smsc47m1_find(unsigned short *addr)
 	else if (val == 0x5F)
 		printk(KERN_INFO "smsc47m1: Found SMSC LPC47M14x\n");
 	else if (val == 0x60)
-		printk(KERN_INFO "smsc47m1: Found SMSC LPC47M15x/LPC47M192\n");
+		printk(KERN_INFO "smsc47m1: Found SMSC "
+		       "LPC47M15x/LPC47M192/LPC47M997\n");
 	else {
 		superio_exit();
 		return -ENODEV;
@@ -396,11 +399,10 @@ static int smsc47m1_detect(struct i2c_adapter *adapter)
 		return -EBUSY;
 	}
 
-	if (!(data = kmalloc(sizeof(struct smsc47m1_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct smsc47m1_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto error_release;
 	}
-	memset(data, 0x00, sizeof(struct smsc47m1_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/hwmon/via686a.c

@@ -44,7 +44,7 @@
 
 /* If force_addr is set to anything different from 0, we forcibly enable
    the device at the given address. */
-static unsigned short force_addr = 0;
+static unsigned short force_addr;
 module_param(force_addr, ushort, 0);
 MODULE_PARM_DESC(force_addr,
 		 "Initialize the base address of the sensors");
@@ -198,7 +198,7 @@ static inline u8 FAN_TO_REG(long rpm, int div)
  but the function is very linear in the useful range (0-80 deg C), so
  we'll just use linear interpolation for 10-bit readings.)  So, tempLUT
  is the temp at via register values 0-255: */
-static const long tempLUT[] =
+static const s16 tempLUT[] =
 { -709, -688, -667, -646, -627, -607, -589, -570, -553, -536, -519,
 	-503, -487, -471, -456, -442, -428, -414, -400, -387, -375,
 	-362, -350, -339, -327, -316, -305, -295, -285, -275, -265,
@@ -270,7 +270,7 @@ static inline u8 TEMP_TO_REG(long val)
 }
 
 /* for 8-bit temperature hyst and over registers */
-#define TEMP_FROM_REG(val) (tempLUT[(val)] * 100)
+#define TEMP_FROM_REG(val)	((long)tempLUT[val] * 100)
 
 /* for 10-bit temperature readings */
 static inline long TEMP_FROM_REG10(u16 val)
@@ -589,10 +589,8 @@ static int via686a_detect(struct i2c_adapter *adapter)
 	u16 val;
 
 	/* 8231 requires multiple of 256, we enforce that on 686 as well */
-	if (force_addr)
-		address = force_addr & 0xFF00;
-
 	if (force_addr) {
+		address = force_addr & 0xFF00;
 		dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n",
 			 address);
 		if (PCIBIOS_SUCCESSFUL !=
@@ -603,11 +601,17 @@ static int via686a_detect(struct i2c_adapter *adapter)
 	    pci_read_config_word(s_bridge, VIA686A_ENABLE_REG, &val))
 		return -ENODEV;
 	if (!(val & 0x0001)) {
-		dev_warn(&adapter->dev, "enabling sensors\n");
-		if (PCIBIOS_SUCCESSFUL !=
-		    pci_write_config_word(s_bridge, VIA686A_ENABLE_REG,
-					  val | 0x0001))
+		if (force_addr) {
+			dev_info(&adapter->dev, "enabling sensors\n");
+			if (PCIBIOS_SUCCESSFUL !=
+			    pci_write_config_word(s_bridge, VIA686A_ENABLE_REG,
+						  val | 0x0001))
+				return -ENODEV;
+		} else {
+			dev_warn(&adapter->dev, "sensors disabled - enable "
+				 "with force_addr=0x%x\n", address);
 			return -ENODEV;
+		}
 	}
 
 	/* Reserve the ISA region */
@@ -617,11 +621,10 @@ static int via686a_detect(struct i2c_adapter *adapter)
 		return -ENODEV;
 	}
 
-	if (!(data = kmalloc(sizeof(struct via686a_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct via686a_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit_release;
 	}
-	memset(data, 0, sizeof(struct via686a_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
@@ -708,7 +711,6 @@ static int via686a_detach_client(struct i2c_client *client)
 	return 0;
 }
 
-/* Called when we have found a new VIA686A. Set limits, etc. */
 static void via686a_init_client(struct i2c_client *client)
 {
 	u8 reg;

drivers/hwmon/w83627ehf.c

@@ -105,7 +105,9 @@ superio_exit(void)
  * ISA constants
  */
 
-#define REGION_LENGTH		8
+#define REGION_ALIGNMENT	~7
+#define REGION_OFFSET		5
+#define REGION_LENGTH		2
 #define ADDR_REG_OFFSET		5
 #define DATA_REG_OFFSET		6
 
@@ -673,16 +675,16 @@ static int w83627ehf_detect(struct i2c_adapter *adapter)
 	struct w83627ehf_data *data;
 	int i, err = 0;
 
-	if (!request_region(address, REGION_LENGTH, w83627ehf_driver.name)) {
+	if (!request_region(address + REGION_OFFSET, REGION_LENGTH,
+	                    w83627ehf_driver.name)) {
 		err = -EBUSY;
 		goto exit;
 	}
 
-	if (!(data = kmalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit_release;
 	}
-	memset(data, 0, sizeof(struct w83627ehf_data));
 
 	client = &data->client;
 	i2c_set_clientdata(client, data);
@@ -762,7 +764,7 @@ exit_detach:
 exit_free:
 	kfree(data);
 exit_release:
-	release_region(address, REGION_LENGTH);
+	release_region(address + REGION_OFFSET, REGION_LENGTH);
 exit:
 	return err;
 }
@@ -776,7 +778,7 @@ static int w83627ehf_detach_client(struct i2c_client *client)
 
 	if ((err = i2c_detach_client(client)))
 		return err;
-	release_region(client->addr, REGION_LENGTH);
+	release_region(client->addr + REGION_OFFSET, REGION_LENGTH);
 	kfree(data);
 
 	return 0;
@@ -807,7 +809,7 @@ static int __init w83627ehf_find(int sioaddr, unsigned short *addr)
 	superio_select(W83627EHF_LD_HWM);
 	val = (superio_inb(SIO_REG_ADDR) << 8)
 	    | superio_inb(SIO_REG_ADDR + 1);
-	*addr = val & ~(REGION_LENGTH - 1);
+	*addr = val & REGION_ALIGNMENT;
 	if (*addr == 0) {
 		superio_exit();
 		return -ENODEV;

drivers/hwmon/w83627hf.c

@@ -142,10 +142,14 @@ superio_exit(void)
 #define WINB_BASE_REG 0x60
 /* Constants specified below */
 
-/* Length of ISA address segment */
-#define WINB_EXTENT 8
+/* Alignment of the base address */
+#define WINB_ALIGNMENT		~7
 
-/* Where are the ISA address/data registers relative to the base address */
+/* Offset & size of I/O region we are interested in */
+#define WINB_REGION_OFFSET	5
+#define WINB_REGION_SIZE	2
+
+/* Where are the sensors address/data registers relative to the base address */
 #define W83781D_ADDR_REG_OFFSET 5
 #define W83781D_DATA_REG_OFFSET 6
 
@@ -197,7 +201,6 @@ superio_exit(void)
 
 #define W83627HF_REG_PWM1 0x5A
 #define W83627HF_REG_PWM2 0x5B
-#define W83627HF_REG_PWMCLK12 0x5C
 
 #define W83627THF_REG_PWM1		0x01	/* 697HF and 637HF too */
 #define W83627THF_REG_PWM2		0x03	/* 697HF and 637HF too */
@@ -981,7 +984,7 @@ static int __init w83627hf_find(int sioaddr, unsigned short *addr)
 	superio_select(W83627HF_LD_HWM);
 	val = (superio_inb(WINB_BASE_REG) << 8) |
 	       superio_inb(WINB_BASE_REG + 1);
-	*addr = val & ~(WINB_EXTENT - 1);
+	*addr = val & WINB_ALIGNMENT;
 	if (*addr == 0 && force_addr == 0) {
 		superio_exit();
 		return -ENODEV;
@@ -1000,9 +1003,10 @@ static int w83627hf_detect(struct i2c_adapter *adapter)
 	const char *client_name = "";
 
 	if(force_addr)
-		address = force_addr & ~(WINB_EXTENT - 1);
+		address = force_addr & WINB_ALIGNMENT;
 
-	if (!request_region(address, WINB_EXTENT, w83627hf_driver.name)) {
+	if (!request_region(address + WINB_REGION_OFFSET, WINB_REGION_SIZE,
+	                    w83627hf_driver.name)) {
 		err = -EBUSY;
 		goto ERROR0;
 	}
@@ -1041,11 +1045,10 @@ static int w83627hf_detect(struct i2c_adapter *adapter)
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access w83627hf_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct w83627hf_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct w83627hf_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto ERROR1;
 	}
-	memset(data, 0, sizeof(struct w83627hf_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
@@ -1148,7 +1151,7 @@ static int w83627hf_detect(struct i2c_adapter *adapter)
       ERROR2:
 	kfree(data);
       ERROR1:
-	release_region(address, WINB_EXTENT);
+	release_region(address + WINB_REGION_OFFSET, WINB_REGION_SIZE);
       ERROR0:
 	return err;
 }
@@ -1163,7 +1166,7 @@ static int w83627hf_detach_client(struct i2c_client *client)
 	if ((err = i2c_detach_client(client)))
 		return err;
 
-	release_region(client->addr, WINB_EXTENT);
+	release_region(client->addr + WINB_REGION_OFFSET, WINB_REGION_SIZE);
 	kfree(data);
 
 	return 0;
@@ -1275,7 +1278,6 @@ static int w83627hf_write_value(struct i2c_client *client, u16 reg, u16 value)
 	return 0;
 }
 
-/* Called when we have found a new W83781D. It should set limits, etc. */
 static void w83627hf_init_client(struct i2c_client *client)
 {
 	struct w83627hf_data *data = i2c_get_clientdata(client);
@@ -1369,12 +1371,6 @@ static void w83627hf_init_client(struct i2c_client *client)
 			}
 		}
 
-		if (type == w83627hf) {
-			/* enable PWM2 control (can't hurt since PWM reg
-		           should have been reset to 0xff) */
-			w83627hf_write_value(client, W83627HF_REG_PWMCLK12,
-					    0x19);
-		}
 		/* enable comparator mode for temp2 and temp3 so
 	           alarm indication will work correctly */
 		i = w83627hf_read_value(client, W83781D_REG_IRQ);

drivers/hwmon/w83781d.c

@@ -889,12 +889,11 @@ w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
 	const char *client_name = "";
 	struct w83781d_data *data = i2c_get_clientdata(new_client);
 
-	data->lm75[0] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 	if (!(data->lm75[0])) {
 		err = -ENOMEM;
 		goto ERROR_SC_0;
 	}
-	memset(data->lm75[0], 0x00, sizeof (struct i2c_client));
 
 	id = i2c_adapter_id(adapter);
 
@@ -919,13 +918,11 @@ w83781d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
 	}
 
 	if (kind != w83783s) {
-
-		data->lm75[1] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+		data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 		if (!(data->lm75[1])) {
 			err = -ENOMEM;
 			goto ERROR_SC_1;
 		}
-		memset(data->lm75[1], 0x0, sizeof(struct i2c_client));
 
 		if (force_subclients[0] == id &&
 		    force_subclients[1] == address) {
@@ -1064,11 +1061,10 @@ w83781d_detect(struct i2c_adapter *adapter, int address, int kind)
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access w83781d_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto ERROR1;
 	}
-	memset(data, 0, sizeof(struct w83781d_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
@@ -1451,7 +1447,6 @@ w83781d_write_value(struct i2c_client *client, u16 reg, u16 value)
 	return 0;
 }
 
-/* Called when we have found a new W83781D. It should set limits, etc. */
 static void
 w83781d_init_client(struct i2c_client *client)
 {

drivers/hwmon/w83792d.c

@@ -1086,11 +1086,10 @@ w83792d_create_subclient(struct i2c_adapter *adapter,
 	int err;
 	struct i2c_client *sub_client;
 
-	(*sub_cli) = sub_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	(*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 	if (!(sub_client)) {
 		return -ENOMEM;
 	}
-	memset(sub_client, 0x00, sizeof(struct i2c_client));
 	sub_client->addr = 0x48 + addr;
 	i2c_set_clientdata(sub_client, NULL);
 	sub_client->adapter = adapter;
@@ -1184,11 +1183,10 @@ w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
 	   client structure, even though we cannot fill it completely yet.
 	   But it allows us to access w83792d_{read,write}_value. */
 
-	if (!(data = kmalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto ERROR0;
 	}
-	memset(data, 0, sizeof(struct w83792d_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
@@ -1429,7 +1427,6 @@ w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
 	return 0;
 }
 
-/* Called when we have found a new W83792D. It should set limits, etc. */
 static void
 w83792d_init_client(struct i2c_client *client)
 {

drivers/hwmon/w83l785ts.c

@@ -37,6 +37,7 @@
 #include <linux/jiffies.h>
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
 #include <linux/err.h>
 
 /* How many retries on register read error */
@@ -73,7 +74,7 @@ I2C_CLIENT_INSMOD_1(w83l785ts);
  * The W83L785TS-S uses signed 8-bit values.
  */
 
-#define TEMP_FROM_REG(val)	((val & 0x80 ? val-0x100 : val) * 1000)
+#define TEMP_FROM_REG(val)	((val) * 1000)
 
 /*
  * Functions declaration
@@ -111,27 +112,24 @@ struct w83l785ts_data {
 	unsigned long last_updated; /* in jiffies */
 
 	/* registers values */
-	u8 temp, temp_over;
+	s8 temp[2]; /* 0: input
+		       1: critical limit */
 };
 
 /*
  * Sysfs stuff
  */
 
-static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
+	char *buf)
 {
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct w83l785ts_data *data = w83l785ts_update_device(dev);
-	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp));
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
 }
 
-static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct w83l785ts_data *data = w83l785ts_update_device(dev);
-	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over));
-}
-
-static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
-static DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_over, NULL);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp, NULL, 1);
 
 /*
  * Real code
@@ -158,12 +156,10 @@ static int w83l785ts_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct w83l785ts_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct w83l785ts_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct w83l785ts_data));
-
 
 	/* The common I2C client data is placed right before the
 	 * W83L785TS-specific data. */
@@ -228,7 +224,7 @@ static int w83l785ts_detect(struct i2c_adapter *adapter, int address, int kind)
 	init_MUTEX(&data->update_lock);
 
 	/* Default values in case the first read fails (unlikely). */
-	data->temp_over = data->temp = 0;
+	data->temp[1] = data->temp[0] = 0;
 
 	/* Tell the I2C layer a new client has arrived. */
 	if ((err = i2c_attach_client(new_client))) 
@@ -246,8 +242,10 @@ static int w83l785ts_detect(struct i2c_adapter *adapter, int address, int kind)
 		goto exit_detach;
 	}
 
-	device_create_file(&new_client->dev, &dev_attr_temp1_input);
-	device_create_file(&new_client->dev, &dev_attr_temp1_max);
+	device_create_file(&new_client->dev,
+			   &sensor_dev_attr_temp1_input.dev_attr);
+	device_create_file(&new_client->dev,
+			   &sensor_dev_attr_temp1_max.dev_attr);
 
 	return 0;
 
@@ -305,10 +303,10 @@ static struct w83l785ts_data *w83l785ts_update_device(struct device *dev)
 
 	if (!data->valid || time_after(jiffies, data->last_updated + HZ * 2)) {
 		dev_dbg(&client->dev, "Updating w83l785ts data.\n");
-		data->temp = w83l785ts_read_value(client,
-			     W83L785TS_REG_TEMP, data->temp);
-		data->temp_over = w83l785ts_read_value(client,
-				  W83L785TS_REG_TEMP_OVER, data->temp_over);
+		data->temp[0] = w83l785ts_read_value(client,
+				W83L785TS_REG_TEMP, data->temp[0]);
+		data->temp[1] = w83l785ts_read_value(client,
+				W83L785TS_REG_TEMP_OVER, data->temp[1]);
 
 		data->last_updated = jiffies;
 		data->valid = 1;

drivers/i2c/algos/i2c-algo-pca.c

@@ -34,7 +34,7 @@
 #define DEB2(fmt, args...) do { if (i2c_debug>=2) printk(fmt, ## args); } while(0)
 #define DEB3(fmt, args...) do { if (i2c_debug>=3) printk(fmt, ## args); } while(0)
 
-static int i2c_debug=0;
+static int i2c_debug;
 
 #define pca_outw(adap, reg, val) adap->write_byte(adap, reg, val)
 #define pca_inw(adap, reg) adap->read_byte(adap, reg)

drivers/i2c/algos/i2c-algo-sibyte.c

@@ -42,7 +42,7 @@
 
 /* module parameters:
  */
-static int bit_scan=0;	/* have a look at what's hanging 'round		*/
+static int bit_scan;	/* have a look at what's hanging 'round		*/
 
 
 static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr, 

drivers/i2c/busses/Kconfig

@@ -135,11 +135,12 @@ config I2C_I810
 	help
 	  If you say yes to this option, support will be included for the Intel
 	  810/815 family of mainboard I2C interfaces.  Specifically, the 
-	  following versions of the chipset is supported:
+	  following versions of the chipset are supported:
 	    i810AA
 	    i810AB
 	    i810E
 	    i815
+	    i845G
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-i810.

drivers/i2c/busses/i2c-ali1535.c

@@ -134,7 +134,7 @@
 					/*  -> Read  = 1		*/
 #define	ALI1535_SMBIO_EN	0x04	/* SMB I/O Space enable		*/
 
-
+static struct pci_driver ali1535_driver;
 static unsigned short ali1535_smba;
 static DECLARE_MUTEX(i2c_ali1535_sem);
 
@@ -162,7 +162,8 @@ static int ali1535_setup(struct pci_dev *dev)
 		goto exit;
 	}
 
-	if (!request_region(ali1535_smba, ALI1535_SMB_IOSIZE, "ali1535-smb")) {
+	if (!request_region(ali1535_smba, ALI1535_SMB_IOSIZE,
+			    ali1535_driver.name)) {
 		dev_err(&dev->dev, "ALI1535_smb region 0x%x already in use!\n",
 			ali1535_smba);
 		goto exit;
@@ -480,7 +481,6 @@ static struct i2c_adapter ali1535_adapter = {
 	.owner		= THIS_MODULE,
 	.class          = I2C_CLASS_HWMON,
 	.algo		= &smbus_algorithm,
-	.name		= "unset",
 };
 
 static struct pci_device_id ali1535_ids[] = {
@@ -513,6 +513,7 @@ static void __devexit ali1535_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver ali1535_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "ali1535_smbus",
 	.id_table	= ali1535_ids,
 	.probe		= ali1535_probe,

drivers/i2c/busses/i2c-ali1563.c

@@ -60,6 +60,7 @@
 
 #define HST_CNTL2_SIZEMASK	0x38
 
+static struct pci_driver ali1563_pci_driver;
 static unsigned short ali1563_smba;
 
 static int ali1563_transaction(struct i2c_adapter * a, int size)
@@ -350,7 +351,8 @@ static int __devinit ali1563_setup(struct pci_dev * dev)
 		dev_warn(&dev->dev,"ali1563_smba Uninitialized\n");
 		goto Err;
 	}
-	if (!request_region(ali1563_smba,ALI1563_SMB_IOSIZE,"i2c-ali1563")) {
+	if (!request_region(ali1563_smba, ALI1563_SMB_IOSIZE,
+			    ali1563_pci_driver.name)) {
 		dev_warn(&dev->dev,"Could not allocate I/O space");
 		goto Err;
 	}
@@ -406,7 +408,8 @@ static struct pci_device_id __devinitdata ali1563_id_table[] = {
 MODULE_DEVICE_TABLE (pci, ali1563_id_table);
 
 static struct pci_driver ali1563_pci_driver = {
- 	.name		= "ali1563_i2c",
+	.owner		= THIS_MODULE,
+ 	.name		= "ali1563_smbus",
 	.id_table	= ali1563_id_table,
  	.probe		= ali1563_probe,
 	.remove		= __devexit_p(ali1563_remove),

drivers/i2c/busses/i2c-ali15x3.c

@@ -125,12 +125,13 @@
 
 /* If force_addr is set to anything different from 0, we forcibly enable
    the device at the given address. */
-static u16 force_addr = 0;
+static u16 force_addr;
 module_param(force_addr, ushort, 0);
 MODULE_PARM_DESC(force_addr,
 		 "Initialize the base address of the i2c controller");
 
-static unsigned short ali15x3_smba = 0;
+static struct pci_driver ali15x3_driver;
+static unsigned short ali15x3_smba;
 
 static int ali15x3_setup(struct pci_dev *ALI15X3_dev)
 {
@@ -166,7 +167,8 @@ static int ali15x3_setup(struct pci_dev *ALI15X3_dev)
 	if(force_addr)
 		ali15x3_smba = force_addr & ~(ALI15X3_SMB_IOSIZE - 1);
 
-	if (!request_region(ali15x3_smba, ALI15X3_SMB_IOSIZE, "ali15x3-smb")) {
+	if (!request_region(ali15x3_smba, ALI15X3_SMB_IOSIZE,
+			    ali15x3_driver.name)) {
 		dev_err(&ALI15X3_dev->dev,
 			"ALI15X3_smb region 0x%x already in use!\n",
 			ali15x3_smba);
@@ -470,7 +472,6 @@ static struct i2c_adapter ali15x3_adapter = {
 	.owner		= THIS_MODULE,
 	.class          = I2C_CLASS_HWMON,
 	.algo		= &smbus_algorithm,
-	.name		= "unset",
 };
 
 static struct pci_device_id ali15x3_ids[] = {
@@ -503,6 +504,7 @@ static void __devexit ali15x3_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver ali15x3_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "ali15x3_smbus",
 	.id_table	= ali15x3_ids,
 	.probe		= ali15x3_probe,

drivers/i2c/busses/i2c-amd756-s4882.c

@@ -169,12 +169,12 @@ static int __init amd756_s4882_init(void)
 	init_MUTEX(&amd756_lock);
 
 	/* Define the 5 virtual adapters and algorithms structures */
-	if (!(s4882_adapter = kmalloc(5 * sizeof(struct i2c_adapter),
+	if (!(s4882_adapter = kzalloc(5 * sizeof(struct i2c_adapter),
 				      GFP_KERNEL))) {
 		error = -ENOMEM;
 		goto ERROR1;
 	}
-	if (!(s4882_algo = kmalloc(5 * sizeof(struct i2c_algorithm),
+	if (!(s4882_algo = kzalloc(5 * sizeof(struct i2c_algorithm),
 				   GFP_KERNEL))) {
 		error = -ENOMEM;
 		goto ERROR2;

drivers/i2c/busses/i2c-amd756.c

@@ -85,8 +85,8 @@
 #define AMD756_PROCESS_CALL	0x04
 #define AMD756_BLOCK_DATA	0x05
 
-
-static unsigned short amd756_ioport = 0;
+static struct pci_driver amd756_driver;
+static unsigned short amd756_ioport;
 
 /* 
   SMBUS event = I/O 28-29 bit 11
@@ -303,7 +303,6 @@ struct i2c_adapter amd756_smbus = {
 	.owner		= THIS_MODULE,
 	.class          = I2C_CLASS_HWMON,
 	.algo		= &smbus_algorithm,
-	.name		= "unset",
 };
 
 enum chiptype { AMD756, AMD766, AMD768, NFORCE, AMD8111 };
@@ -365,7 +364,7 @@ static int __devinit amd756_probe(struct pci_dev *pdev,
 		amd756_ioport += SMB_ADDR_OFFSET;
 	}
 
-	if (!request_region(amd756_ioport, SMB_IOSIZE, "amd756-smbus")) {
+	if (!request_region(amd756_ioport, SMB_IOSIZE, amd756_driver.name)) {
 		dev_err(&pdev->dev, "SMB region 0x%x already in use!\n",
 			amd756_ioport);
 		return -ENODEV;
@@ -402,6 +401,7 @@ static void __devexit amd756_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver amd756_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "amd756_smbus",
 	.id_table	= amd756_ids,
 	.probe		= amd756_probe,

drivers/i2c/busses/i2c-amd8111.c

@@ -30,6 +30,8 @@ struct amd_smbus {
 	int size;
 };
 
+static struct pci_driver amd8111_driver;
+
 /*
  * AMD PCI control registers definitions.
  */
@@ -242,7 +244,6 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr, unsigned short fl
 			break;
 
 		case I2C_SMBUS_BLOCK_PROC_CALL:
-			protocol |= pec;
 			len = min_t(u8, data->block[0], 31);
 			amd_ec_write(smbus, AMD_SMB_CMD, command);
 			amd_ec_write(smbus, AMD_SMB_BCNT, len);
@@ -252,13 +253,6 @@ static s32 amd8111_access(struct i2c_adapter * adap, u16 addr, unsigned short fl
 			read_write = I2C_SMBUS_READ;
 			break;
 
-		case I2C_SMBUS_WORD_DATA_PEC:
-		case I2C_SMBUS_BLOCK_DATA_PEC:
-		case I2C_SMBUS_PROC_CALL_PEC:
-		case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
-			dev_warn(&adap->dev, "Unexpected software PEC transaction %d\n.", size);
-			return -1;
-
 		default:
 			dev_warn(&adap->dev, "Unsupported transaction %d\n", size);
 			return -1;
@@ -343,16 +337,15 @@ static int __devinit amd8111_probe(struct pci_dev *dev, const struct pci_device_
 	if (~pci_resource_flags(dev, 0) & IORESOURCE_IO)
 		return -ENODEV;
 
-	smbus = kmalloc(sizeof(struct amd_smbus), GFP_KERNEL);
+	smbus = kzalloc(sizeof(struct amd_smbus), GFP_KERNEL);
 	if (!smbus)
 		return -ENOMEM;
-	memset(smbus, 0, sizeof(struct amd_smbus));
 
 	smbus->dev = dev;
 	smbus->base = pci_resource_start(dev, 0);
 	smbus->size = pci_resource_len(dev, 0);
 
-	if (!request_region(smbus->base, smbus->size, "amd8111 SMBus 2.0"))
+	if (!request_region(smbus->base, smbus->size, amd8111_driver.name))
 		goto out_kfree;
 
 	smbus->adapter.owner = THIS_MODULE;
@@ -391,6 +384,7 @@ static void __devexit amd8111_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver amd8111_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "amd8111_smbus2",
 	.id_table	= amd8111_ids,
 	.probe		= amd8111_probe,

drivers/i2c/busses/i2c-elektor.c

@@ -22,7 +22,7 @@
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
    Frodo Looijaard <frodol@dds.nl> */
 
-/* Partialy rewriten by Oleg I. Vdovikin for mmapped support of 
+/* Partialy rewriten by Oleg I. Vdovikin for mmapped support of
    for Alpha Processor Inc. UP-2000(+) boards */
 
 #include <linux/kernel.h>
@@ -46,12 +46,14 @@
 #define DEFAULT_BASE 0x330
 
 static int base;
+static u8 __iomem *base_iomem;
+
 static int irq;
 static int clock  = 0x1c;
 static int own    = 0x55;
 static int mmapped;
 
-/* vdovikin: removed static struct i2c_pcf_isa gpi; code - 
+/* vdovikin: removed static struct i2c_pcf_isa gpi; code -
   this module in real supports only one device, due to missing arguments
   in some functions, called from the algo-pcf module. Sometimes it's
   need to be rewriten - but for now just remove this for simpler reading */
@@ -60,40 +62,33 @@ static wait_queue_head_t pcf_wait;
 static int pcf_pending;
 static spinlock_t lock;
 
+static struct i2c_adapter pcf_isa_ops;
+
 /* ----- local functions ----------------------------------------------	*/
 
 static void pcf_isa_setbyte(void *data, int ctl, int val)
 {
-	int address = ctl ? (base + 1) : base;
+	u8 __iomem *address = ctl ? (base_iomem + 1) : base_iomem;
 
 	/* enable irq if any specified for serial operation */
 	if (ctl && irq && (val & I2C_PCF_ESO)) {
 		val |= I2C_PCF_ENI;
 	}
 
-	pr_debug("i2c-elektor: Write 0x%X 0x%02X\n", address, val & 255);
-
-	switch (mmapped) {
-	case 0: /* regular I/O */
-		outb(val, address);
-		break;
-	case 2: /* double mapped I/O needed for UP2000 board,
-                   I don't know why this... */
-		writeb(val, (void *)address);
-		/* fall */
-	case 1: /* memory mapped I/O */
-		writeb(val, (void *)address);
-		break;
-	}
+	pr_debug("%s: Write %p 0x%02X\n", pcf_isa_ops.name, address, val);
+	iowrite8(val, address);
+#ifdef __alpha__
+	/* API UP2000 needs some hardware fudging to make the write stick */
+	iowrite8(val, address);
+#endif
 }
 
 static int pcf_isa_getbyte(void *data, int ctl)
 {
-	int address = ctl ? (base + 1) : base;
-	int val = mmapped ? readb((void *)address) : inb(address);
-
-	pr_debug("i2c-elektor: Read 0x%X 0x%02X\n", address, val);
+	u8 __iomem *address = ctl ? (base_iomem + 1) : base_iomem;
+	int val = ioread8(address);
 
+	pr_debug("%s: Read %p 0x%02X\n", pcf_isa_ops.name, address, val);
 	return (val);
 }
 
@@ -149,16 +144,40 @@ static int pcf_isa_init(void)
 {
 	spin_lock_init(&lock);
 	if (!mmapped) {
-		if (!request_region(base, 2, "i2c (isa bus adapter)")) {
-			printk(KERN_ERR
-			       "i2c-elektor: requested I/O region (0x%X:2) "
-			       "is in use.\n", base);
+		if (!request_region(base, 2, pcf_isa_ops.name)) {
+			printk(KERN_ERR "%s: requested I/O region (%#x:2) is "
+			       "in use\n", pcf_isa_ops.name, base);
+			return -ENODEV;
+		}
+		base_iomem = ioport_map(base, 2);
+		if (!base_iomem) {
+			printk(KERN_ERR "%s: remap of I/O region %#x failed\n",
+			       pcf_isa_ops.name, base);
+			release_region(base, 2);
+			return -ENODEV;
+		}
+	} else {
+		if (!request_mem_region(base, 2, pcf_isa_ops.name)) {
+			printk(KERN_ERR "%s: requested memory region (%#x:2) "
+			       "is in use\n", pcf_isa_ops.name, base);
+			return -ENODEV;
+		}
+		base_iomem = ioremap(base, 2);
+		if (base_iomem == NULL) {
+			printk(KERN_ERR "%s: remap of memory region %#x "
+			       "failed\n", pcf_isa_ops.name, base);
+			release_mem_region(base, 2);
 			return -ENODEV;
 		}
 	}
+	pr_debug("%s: registers %#x remapped to %p\n", pcf_isa_ops.name, base,
+		 base_iomem);
+
 	if (irq > 0) {
-		if (request_irq(irq, pcf_isa_handler, 0, "PCF8584", NULL) < 0) {
-			printk(KERN_ERR "i2c-elektor: Request irq%d failed\n", irq);
+		if (request_irq(irq, pcf_isa_handler, 0, pcf_isa_ops.name,
+				NULL) < 0) {
+			printk(KERN_ERR "%s: Request irq%d failed\n",
+			       pcf_isa_ops.name, irq);
 			irq = 0;
 		} else
 			enable_irq(irq);
@@ -186,47 +205,49 @@ static struct i2c_adapter pcf_isa_ops = {
 	.class		= I2C_CLASS_HWMON,
 	.id		= I2C_HW_P_ELEK,
 	.algo_data	= &pcf_isa_data,
-	.name		= "PCF8584 ISA adapter",
+	.name		= "i2c-elektor",
 };
 
-static int __init i2c_pcfisa_init(void) 
+static int __init i2c_pcfisa_init(void)
 {
 #ifdef __alpha__
-	/* check to see we have memory mapped PCF8584 connected to the 
+	/* check to see we have memory mapped PCF8584 connected to the
 	Cypress cy82c693 PCI-ISA bridge as on UP2000 board */
 	if (base == 0) {
 		struct pci_dev *cy693_dev;
-		
-		cy693_dev = pci_get_device(PCI_VENDOR_ID_CONTAQ, 
+
+		cy693_dev = pci_get_device(PCI_VENDOR_ID_CONTAQ,
 					   PCI_DEVICE_ID_CONTAQ_82C693, NULL);
 		if (cy693_dev) {
-			char config;
+			unsigned char config;
 			/* yeap, we've found cypress, let's check config */
 			if (!pci_read_config_byte(cy693_dev, 0x47, &config)) {
-				
-				pr_debug("i2c-elektor: found cy82c693, config register 0x47 = 0x%02x.\n", config);
+
+				pr_debug("%s: found cy82c693, config "
+					 "register 0x47 = 0x%02x\n",
+					 pcf_isa_ops.name, config);
 
 				/* UP2000 board has this register set to 0xe1,
-                                   but the most significant bit as seems can be 
+				   but the most significant bit as seems can be
 				   reset during the proper initialisation
-                                   sequence if guys from API decides to do that
-                                   (so, we can even enable Tsunami Pchip
-                                   window for the upper 1 Gb) */
+				   sequence if guys from API decides to do that
+				   (so, we can even enable Tsunami Pchip
+				   window for the upper 1 Gb) */
 
 				/* so just check for ROMCS at 0xe0000,
-                                   ROMCS enabled for writes
+				   ROMCS enabled for writes
 				   and external XD Bus buffer in use. */
 				if ((config & 0x7f) == 0x61) {
 					/* seems to be UP2000 like board */
 					base = 0xe0000;
-                                        /* I don't know why we need to
-                                           write twice */
-					mmapped = 2;
-                                        /* UP2000 drives ISA with
+					mmapped = 1;
+					/* UP2000 drives ISA with
 					   8.25 MHz (PCI/4) clock
 					   (this can be read from cypress) */
 					clock = I2C_PCF_CLK | I2C_PCF_TRNS90;
-					printk(KERN_INFO "i2c-elektor: found API UP2000 like board, will probe PCF8584 later.\n");
+					pr_info("%s: found API UP2000 like "
+						"board, will probe PCF8584 "
+						"later\n", pcf_isa_ops.name);
 				}
 			}
 			pci_dev_put(cy693_dev);
@@ -236,12 +257,11 @@ static int __init i2c_pcfisa_init(void)
 
 	/* sanity checks for mmapped I/O */
 	if (mmapped && base < 0xc8000) {
-		printk(KERN_ERR "i2c-elektor: incorrect base address (0x%0X) specified for mmapped I/O.\n", base);
+		printk(KERN_ERR "%s: incorrect base address (%#x) specified "
+		       "for mmapped I/O\n", pcf_isa_ops.name, base);
 		return -ENODEV;
 	}
 
-	printk(KERN_INFO "i2c-elektor: i2c pcf8584-isa adapter driver\n");
-
 	if (base == 0) {
 		base = DEFAULT_BASE;
 	}
@@ -251,8 +271,8 @@ static int __init i2c_pcfisa_init(void)
 		return -ENODEV;
 	if (i2c_pcf_add_bus(&pcf_isa_ops) < 0)
 		goto fail;
-	
-	printk(KERN_ERR "i2c-elektor: found device at %#x.\n", base);
+
+	dev_info(&pcf_isa_ops.dev, "found device at %#x\n", base);
 
 	return 0;
 
@@ -262,8 +282,13 @@ static int __init i2c_pcfisa_init(void)
 		free_irq(irq, NULL);
 	}
 
-	if (!mmapped)
-		release_region(base , 2);
+	if (!mmapped) {
+		ioport_unmap(base_iomem);
+		release_region(base, 2);
+	} else {
+		iounmap(base_iomem);
+		release_mem_region(base, 2);
+	}
 	return -ENODEV;
 }
 
@@ -276,8 +301,13 @@ static void i2c_pcfisa_exit(void)
 		free_irq(irq, NULL);
 	}
 
-	if (!mmapped)
-		release_region(base , 2);
+	if (!mmapped) {
+		ioport_unmap(base_iomem);
+		release_region(base, 2);
+	} else {
+		iounmap(base_iomem);
+		release_mem_region(base, 2);
+	}
 }
 
 MODULE_AUTHOR("Hans Berglund <hb@spacetec.no>");

drivers/i2c/busses/i2c-hydra.c

@@ -155,6 +155,7 @@ static void __devexit hydra_remove(struct pci_dev *dev)
 
 
 static struct pci_driver hydra_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "hydra_smbus",
 	.id_table	= hydra_ids,
 	.probe		= hydra_probe,

drivers/i2c/busses/i2c-i801.c

@@ -52,10 +52,6 @@
 #include <linux/i2c.h>
 #include <asm/io.h>
 
-#ifdef I2C_FUNC_SMBUS_BLOCK_DATA_PEC
-#define HAVE_PEC
-#endif
-
 /* I801 SMBus address offsets */
 #define SMBHSTSTS	(0 + i801_smba)
 #define SMBHSTCNT	(2 + i801_smba)
@@ -106,10 +102,11 @@ MODULE_PARM_DESC(force_addr,
 		 "EXTREMELY DANGEROUS!");
 
 static int i801_transaction(void);
-static int i801_block_transaction(union i2c_smbus_data *data,
-				  char read_write, int command);
+static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
+				  int command, int hwpec);
 
 static unsigned short i801_smba;
+static struct pci_driver i801_driver;
 static struct pci_dev *I801_dev;
 static int isich4;
 
@@ -143,7 +140,7 @@ static int i801_setup(struct pci_dev *dev)
 		}
 	}
 
-	if (!request_region(i801_smba, (isich4 ? 16 : 8), "i801-smbus")) {
+	if (!request_region(i801_smba, (isich4 ? 16 : 8), i801_driver.name)) {
 		dev_err(&dev->dev, "I801_smb region 0x%x already in use!\n",
 			i801_smba);
 		error_return = -EBUSY;
@@ -252,7 +249,7 @@ static int i801_transaction(void)
 
 /* All-inclusive block transaction function */
 static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
-				  int command)
+				  int command, int hwpec)
 {
 	int i, len;
 	int smbcmd;
@@ -391,8 +388,7 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
 			goto END;
 	}
 
-#ifdef HAVE_PEC
-	if(isich4 && command == I2C_SMBUS_BLOCK_DATA_PEC) {
+	if (hwpec) {
 		/* wait for INTR bit as advised by Intel */
 		timeout = 0;
 		do {
@@ -406,7 +402,6 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
 		}
 		outb_p(temp, SMBHSTSTS); 
 	}
-#endif
 	result = 0;
 END:
 	if (command == I2C_SMBUS_I2C_BLOCK_DATA) {
@@ -421,14 +416,13 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
 		       unsigned short flags, char read_write, u8 command,
 		       int size, union i2c_smbus_data * data)
 {
-	int hwpec = 0;
+	int hwpec;
 	int block = 0;
 	int ret, xact = 0;
 
-#ifdef HAVE_PEC
-	if(isich4)
-		hwpec = (flags & I2C_CLIENT_PEC) != 0;
-#endif
+	hwpec = isich4 && (flags & I2C_CLIENT_PEC)
+		&& size != I2C_SMBUS_QUICK
+		&& size != I2C_SMBUS_I2C_BLOCK_DATA;
 
 	switch (size) {
 	case I2C_SMBUS_QUICK:
@@ -463,11 +457,6 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
 		break;
 	case I2C_SMBUS_BLOCK_DATA:
 	case I2C_SMBUS_I2C_BLOCK_DATA:
-#ifdef HAVE_PEC
-	case I2C_SMBUS_BLOCK_DATA_PEC:
-		if(hwpec && size == I2C_SMBUS_BLOCK_DATA)
-			size = I2C_SMBUS_BLOCK_DATA_PEC;
-#endif
 		outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
 		       SMBHSTADD);
 		outb_p(command, SMBHSTCMD);
@@ -479,27 +468,18 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
 		return -1;
 	}
 
-#ifdef HAVE_PEC
-	if(isich4 && hwpec) {
-		if(size != I2C_SMBUS_QUICK &&
-		   size != I2C_SMBUS_I2C_BLOCK_DATA)
-			outb_p(1, SMBAUXCTL);	/* enable HW PEC */
-	}
-#endif
+	if (hwpec)
+		outb_p(1, SMBAUXCTL);	/* enable hardware PEC */
+
 	if(block)
-		ret = i801_block_transaction(data, read_write, size);
+		ret = i801_block_transaction(data, read_write, size, hwpec);
 	else {
 		outb_p(xact | ENABLE_INT9, SMBHSTCNT);
 		ret = i801_transaction();
 	}
 
-#ifdef HAVE_PEC
-	if(isich4 && hwpec) {
-		if(size != I2C_SMBUS_QUICK &&
-		   size != I2C_SMBUS_I2C_BLOCK_DATA)
-			outb_p(0, SMBAUXCTL);
-	}
-#endif
+	if (hwpec)
+		outb_p(0, SMBAUXCTL);	/* disable hardware PEC */
 
 	if(block)
 		return ret;
@@ -526,12 +506,7 @@ static u32 i801_func(struct i2c_adapter *adapter)
 	return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
 	    I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
 	    I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
-#ifdef HAVE_PEC
-	     | (isich4 ? I2C_FUNC_SMBUS_BLOCK_DATA_PEC |
-	                 I2C_FUNC_SMBUS_HWPEC_CALC
-	               : 0)
-#endif
-	    ;
+	     | (isich4 ? I2C_FUNC_SMBUS_HWPEC_CALC : 0);
 }
 
 static struct i2c_algorithm smbus_algorithm = {
@@ -543,7 +518,6 @@ static struct i2c_adapter i801_adapter = {
 	.owner		= THIS_MODULE,
 	.class		= I2C_CLASS_HWMON,
 	.algo		= &smbus_algorithm,
-	.name		= "unset",
 };
 
 static struct pci_device_id i801_ids[] = {
@@ -586,6 +560,7 @@ static void __devexit i801_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver i801_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "i801_smbus",
 	.id_table	= i801_ids,
 	.probe		= i801_probe,

drivers/i2c/busses/i2c-i810.c

@@ -32,6 +32,7 @@
    i810AB		7123           
    i810E		7125           
    i815			1132           
+   i845G		2562
 */
 
 #include <linux/kernel.h>
@@ -232,6 +233,7 @@ static void __devexit i810_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver i810_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "i810_smbus",
 	.id_table	= i810_ids,
 	.probe		= i810_probe,

drivers/i2c/busses/i2c-ibm_iic.c

@@ -672,13 +672,12 @@ static int __devinit iic_probe(struct ocp_device *ocp){
 		printk(KERN_WARNING"ibm-iic%d: missing additional data!\n",
 			ocp->def->index);
 
-	if (!(dev = kmalloc(sizeof(*dev), GFP_KERNEL))){
+	if (!(dev = kzalloc(sizeof(*dev), GFP_KERNEL))) {
 		printk(KERN_CRIT "ibm-iic%d: failed to allocate device data\n",
 			ocp->def->index);
 		return -ENOMEM;
 	}
 
-	memset(dev, 0, sizeof(*dev));
 	dev->idx = ocp->def->index;
 	ocp_set_drvdata(ocp, dev);
 	

drivers/i2c/busses/i2c-iop3xx.c

@@ -43,7 +43,7 @@
 #include "i2c-iop3xx.h"
 
 /* global unit counter */
-static int i2c_id = 0;
+static int i2c_id;
 
 static inline unsigned char 
 iic_cook_addr(struct i2c_msg *msg) 
@@ -440,19 +440,17 @@ iop3xx_i2c_probe(struct device *dev)
 	struct i2c_adapter *new_adapter;
 	struct i2c_algo_iop3xx_data *adapter_data;
 
-	new_adapter = kmalloc(sizeof(struct i2c_adapter), GFP_KERNEL);
+	new_adapter = kzalloc(sizeof(struct i2c_adapter), GFP_KERNEL);
 	if (!new_adapter) {
 		ret = -ENOMEM;
 		goto out;
 	}
-	memset((void*)new_adapter, 0, sizeof(*new_adapter));
 
-	adapter_data = kmalloc(sizeof(struct i2c_algo_iop3xx_data), GFP_KERNEL);
+	adapter_data = kzalloc(sizeof(struct i2c_algo_iop3xx_data), GFP_KERNEL);
 	if (!adapter_data) {
 		ret = -ENOMEM;
 		goto free_adapter;
 	}
-	memset((void*)adapter_data, 0, sizeof(*adapter_data));
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
@@ -525,6 +523,7 @@ out:
 
 
 static struct device_driver iop3xx_i2c_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "IOP3xx-I2C",
 	.bus		= &platform_bus_type,
 	.probe		= iop3xx_i2c_probe,

drivers/i2c/busses/i2c-isa.c

@@ -92,6 +92,7 @@ int i2c_isa_add_driver(struct i2c_driver *driver)
 
 	/* Add the driver to the list of i2c drivers in the driver core */
 	driver->driver.name = driver->name;
+	driver->driver.owner = driver->owner;
 	driver->driver.bus = &i2c_bus_type;
 	driver->driver.probe = i2c_isa_device_probe;
 	driver->driver.remove = i2c_isa_device_remove;

drivers/i2c/busses/i2c-ixp2000.c

@@ -36,6 +36,8 @@
 #include <asm/hardware.h>	/* Pick up IXP2000-specific bits */
 #include <asm/arch/gpio.h>
 
+static struct device_driver ixp2000_i2c_driver;
+
 static inline int ixp2000_scl_pin(void *data)
 {
 	return ((struct ixp2000_i2c_pins*)data)->scl_pin;
@@ -104,11 +106,10 @@ static int ixp2000_i2c_probe(struct device *dev)
 	struct platform_device *plat_dev = to_platform_device(dev);
 	struct ixp2000_i2c_pins *gpio = plat_dev->dev.platform_data;
 	struct ixp2000_i2c_data *drv_data = 
-		kmalloc(sizeof(struct ixp2000_i2c_data), GFP_KERNEL);
+		kzalloc(sizeof(struct ixp2000_i2c_data), GFP_KERNEL);
 
 	if (!drv_data)
 		return -ENOMEM;
-	memzero(drv_data, sizeof(*drv_data));
 	drv_data->gpio_pins = gpio;
 
 	drv_data->algo_data.data = gpio;
@@ -121,6 +122,8 @@ static int ixp2000_i2c_probe(struct device *dev)
 	drv_data->algo_data.timeout = 100;
 
 	drv_data->adapter.id = I2C_HW_B_IXP2000,
+	strlcpy(drv_data->adapter.name, ixp2000_i2c_driver.name,
+		I2C_NAME_SIZE);
 	drv_data->adapter.algo_data = &drv_data->algo_data,
 
 	drv_data->adapter.dev.parent = &plat_dev->dev;
@@ -142,6 +145,7 @@ static int ixp2000_i2c_probe(struct device *dev)
 }
 
 static struct device_driver ixp2000_i2c_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "IXP2000-I2C",
 	.bus		= &platform_bus_type,
 	.probe		= ixp2000_i2c_probe,

drivers/i2c/busses/i2c-ixp4xx.c

@@ -35,6 +35,8 @@
 
 #include <asm/hardware.h>	/* Pick up IXP4xx-specific bits */
 
+static struct device_driver ixp4xx_i2c_driver;
+
 static inline int ixp4xx_scl_pin(void *data)
 {
 	return ((struct ixp4xx_i2c_pins*)data)->scl_pin;
@@ -105,12 +107,11 @@ static int ixp4xx_i2c_probe(struct device *dev)
 	struct platform_device *plat_dev = to_platform_device(dev);
 	struct ixp4xx_i2c_pins *gpio = plat_dev->dev.platform_data;
 	struct ixp4xx_i2c_data *drv_data = 
-		kmalloc(sizeof(struct ixp4xx_i2c_data), GFP_KERNEL);
+		kzalloc(sizeof(struct ixp4xx_i2c_data), GFP_KERNEL);
 
 	if(!drv_data)
 		return -ENOMEM;
 
-	memzero(drv_data, sizeof(struct ixp4xx_i2c_data));
 	drv_data->gpio_pins = gpio;
 
 	/*
@@ -129,6 +130,8 @@ static int ixp4xx_i2c_probe(struct device *dev)
 	drv_data->algo_data.timeout = 100;
 
 	drv_data->adapter.id = I2C_HW_B_IXP4XX;
+	strlcpy(drv_data->adapter.name, ixp4xx_i2c_driver.name,
+		I2C_NAME_SIZE);
 	drv_data->adapter.algo_data = &drv_data->algo_data;
 
 	drv_data->adapter.dev.parent = &plat_dev->dev;
@@ -151,6 +154,7 @@ static int ixp4xx_i2c_probe(struct device *dev)
 }
 
 static struct device_driver ixp4xx_i2c_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "IXP4XX-I2C",
 	.bus		= &platform_bus_type,
 	.probe		= ixp4xx_i2c_probe,

drivers/i2c/busses/i2c-keywest.c

@@ -535,13 +535,12 @@ create_iface(struct device_node *np, struct device *dev)
 
 	tsize = sizeof(struct keywest_iface) +
 		(sizeof(struct keywest_chan) + 4) * nchan;
-	iface = (struct keywest_iface *) kmalloc(tsize, GFP_KERNEL);
+	iface = kzalloc(tsize, GFP_KERNEL);
 	if (iface == NULL) {
 		printk(KERN_ERR "i2c-keywest: can't allocate inteface !\n");
 		pmac_low_i2c_unlock(np);
 		return -ENOMEM;
 	}
-	memset(iface, 0, tsize);
 	spin_lock_init(&iface->lock);
 	init_completion(&iface->complete);
 	iface->node = of_node_get(np);
@@ -716,6 +715,7 @@ static struct of_device_id i2c_keywest_match[] =
 
 static struct macio_driver i2c_keywest_macio_driver = 
 {
+	.owner		= THIS_MODULE,
 	.name 		= "i2c-keywest",
 	.match_table	= i2c_keywest_match,
 	.probe		= create_iface_macio,
@@ -724,6 +724,7 @@ static struct macio_driver i2c_keywest_macio_driver =
 
 static struct of_platform_driver i2c_keywest_of_platform_driver = 
 {
+	.owner		= THIS_MODULE,
 	.name 		= "i2c-keywest",
 	.match_table	= i2c_keywest_match,
 	.probe		= create_iface_of_platform,

drivers/i2c/busses/i2c-mpc.c

@@ -296,10 +296,9 @@ static int fsl_i2c_probe(struct device *device)
 
 	pdata = (struct fsl_i2c_platform_data *) pdev->dev.platform_data;
 
-	if (!(i2c = kmalloc(sizeof(*i2c), GFP_KERNEL))) {
+	if (!(i2c = kzalloc(sizeof(*i2c), GFP_KERNEL))) {
 		return -ENOMEM;
 	}
-	memset(i2c, 0, sizeof(*i2c));
 
 	i2c->irq = platform_get_irq(pdev, 0);
 	i2c->flags = pdata->device_flags;
@@ -361,6 +360,7 @@ static int fsl_i2c_remove(struct device *device)
 
 /* Structure for a device driver */
 static struct device_driver fsl_i2c_driver = {
+	.owner = THIS_MODULE,
 	.name = "fsl-i2c",
 	.bus = &platform_bus_type,
 	.probe = fsl_i2c_probe,

drivers/i2c/busses/i2c-mv64xxx.c

@@ -500,13 +500,10 @@ mv64xxx_i2c_probe(struct device *dev)
 	if ((pd->id != 0) || !pdata)
 		return -ENODEV;
 
-	drv_data = kmalloc(sizeof(struct mv64xxx_i2c_data), GFP_KERNEL);
-
+	drv_data = kzalloc(sizeof(struct mv64xxx_i2c_data), GFP_KERNEL);
 	if (!drv_data)
 		return -ENOMEM;
 
-	memset(drv_data, 0, sizeof(struct mv64xxx_i2c_data));
-
 	if (mv64xxx_i2c_map_regs(pd, drv_data)) {
 		rc = -ENODEV;
 		goto exit_kfree;
@@ -570,6 +567,7 @@ mv64xxx_i2c_remove(struct device *dev)
 }
 
 static struct device_driver mv64xxx_i2c_driver = {
+	.owner	= THIS_MODULE,
 	.name	= MV64XXX_I2C_CTLR_NAME,
 	.bus	= &platform_bus_type,
 	.probe	= mv64xxx_i2c_probe,

drivers/i2c/busses/i2c-nforce2.c

@@ -97,6 +97,7 @@ struct nforce2_smbus {
 #define NVIDIA_SMB_PRTCL_I2C_BLOCK_DATA		0x4a
 #define NVIDIA_SMB_PRTCL_PEC			0x80
 
+static struct pci_driver nforce2_driver;
 
 static s32 nforce2_access(struct i2c_adapter *adap, u16 addr,
 		       unsigned short flags, char read_write,
@@ -113,7 +114,6 @@ static struct i2c_adapter nforce2_adapter = {
 	.owner          = THIS_MODULE,
 	.class          = I2C_CLASS_HWMON,
 	.algo           = &smbus_algorithm,
-	.name   	= "unset",
 };
 
 /* Return -1 on error. See smbus.h for more information */
@@ -188,13 +188,6 @@ static s32 nforce2_access(struct i2c_adapter * adap, u16 addr,
 			dev_err(&adap->dev, "I2C_SMBUS_BLOCK_PROC_CALL not supported!\n");
 			return -1;
 
-		case I2C_SMBUS_WORD_DATA_PEC:
-		case I2C_SMBUS_BLOCK_DATA_PEC:
-		case I2C_SMBUS_PROC_CALL_PEC:
-		case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
-			dev_err(&adap->dev, "Unexpected software PEC transaction %d\n.", size);
-			return -1;
-
 		default:
 			dev_err(&adap->dev, "Unsupported transaction %d\n", size);
 			return -1;
@@ -285,7 +278,7 @@ static int __devinit nforce2_probe_smb (struct pci_dev *dev, int reg,
 	smbus->base = iobase & 0xfffc;
 	smbus->size = 8;
 
-	if (!request_region(smbus->base, smbus->size, "nForce2 SMBus")) {
+	if (!request_region(smbus->base, smbus->size, nforce2_driver.name)) {
 		dev_err(&smbus->adapter.dev, "Error requesting region %02x .. %02X for %s\n",
 			smbus->base, smbus->base+smbus->size-1, name);
 		return -1;
@@ -313,10 +306,8 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_
 	int res1, res2;
 
 	/* we support 2 SMBus adapters */
-	if (!(smbuses = (void *)kmalloc(2*sizeof(struct nforce2_smbus),
-				       	GFP_KERNEL)))
+	if (!(smbuses = kzalloc(2*sizeof(struct nforce2_smbus), GFP_KERNEL)))
 		return -ENOMEM;
-	memset (smbuses, 0, 2*sizeof(struct nforce2_smbus));
 	pci_set_drvdata(dev, smbuses);
 
 	/* SMBus adapter 1 */
@@ -356,6 +347,7 @@ static void __devexit nforce2_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver nforce2_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "nForce2_smbus",
 	.id_table	= nforce2_ids,
 	.probe		= nforce2_probe,

drivers/i2c/busses/i2c-parport.c

@@ -155,12 +155,11 @@ static void i2c_parport_attach (struct parport *port)
 {
 	struct i2c_par *adapter;
 	
-	adapter = kmalloc(sizeof(struct i2c_par), GFP_KERNEL);
+	adapter = kzalloc(sizeof(struct i2c_par), GFP_KERNEL);
 	if (adapter == NULL) {
-		printk(KERN_ERR "i2c-parport: Failed to kmalloc\n");
+		printk(KERN_ERR "i2c-parport: Failed to kzalloc\n");
 		return;
 	}
-	memset(adapter, 0x00, sizeof(struct i2c_par));
 
 	pr_debug("i2c-parport: attaching to %s\n", port->name);
 	adapter->pdev = parport_register_device(port, "i2c-parport",
@@ -232,7 +231,7 @@ static void i2c_parport_detach (struct parport *port)
 	}
 }
 
-static struct parport_driver i2c_driver = {
+static struct parport_driver i2c_parport_driver = {
 	.name	= "i2c-parport",
 	.attach	= i2c_parport_attach,
 	.detach	= i2c_parport_detach,
@@ -250,12 +249,12 @@ static int __init i2c_parport_init(void)
 		type = 0;
 	}
 	
-	return parport_register_driver(&i2c_driver);
+	return parport_register_driver(&i2c_parport_driver);
 }
 
 static void __exit i2c_parport_exit(void)
 {
-	parport_unregister_driver(&i2c_driver);
+	parport_unregister_driver(&i2c_parport_driver);
 }
 
 MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");

drivers/i2c/busses/i2c-piix4.c

@@ -90,13 +90,13 @@ struct sd {
 
 /* If force is set to anything different from 0, we forcibly enable the
    PIIX4. DANGEROUS! */
-static int force = 0;
+static int force;
 module_param (force, int, 0);
 MODULE_PARM_DESC(force, "Forcibly enable the PIIX4. DANGEROUS!");
 
 /* If force_addr is set to anything different from 0, we forcibly enable
    the PIIX4 at the given address. VERY DANGEROUS! */
-static int force_addr = 0;
+static int force_addr;
 module_param (force_addr, int, 0);
 MODULE_PARM_DESC(force_addr,
 		 "Forcibly enable the PIIX4 at the given address. "
@@ -104,14 +104,15 @@ MODULE_PARM_DESC(force_addr,
 
 /* If fix_hstcfg is set to anything different from 0, we reset one of the
    registers to be a valid value. */
-static int fix_hstcfg = 0;
+static int fix_hstcfg;
 module_param (fix_hstcfg, int, 0);
 MODULE_PARM_DESC(fix_hstcfg,
 		"Fix config register. Needed on some boards (Force CPCI735).");
 
 static int piix4_transaction(void);
 
-static unsigned short piix4_smba = 0;
+static unsigned short piix4_smba;
+static struct pci_driver piix4_driver;
 static struct i2c_adapter piix4_adapter;
 
 static struct dmi_system_id __devinitdata piix4_dmi_table[] = {
@@ -157,7 +158,7 @@ static int __devinit piix4_setup(struct pci_dev *PIIX4_dev,
 		}
 	}
 
-	if (!request_region(piix4_smba, SMBIOSIZE, "piix4-smbus")) {
+	if (!request_region(piix4_smba, SMBIOSIZE, piix4_driver.name)) {
 		dev_err(&PIIX4_dev->dev, "SMB region 0x%x already in use!\n",
 			piix4_smba);
 		return -ENODEV;
@@ -407,7 +408,6 @@ static struct i2c_adapter piix4_adapter = {
 	.owner		= THIS_MODULE,
 	.class		= I2C_CLASS_HWMON,
 	.algo		= &smbus_algorithm,
-	.name		= "unset",
 };
 
 static struct pci_device_id piix4_ids[] = {
@@ -462,6 +462,7 @@ static void __devexit piix4_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver piix4_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "piix4_smbus",
 	.id_table	= piix4_ids,
 	.probe		= piix4_probe,

drivers/i2c/busses/i2c-pmac-smu.c

@@ -211,12 +211,11 @@ static int create_iface(struct device_node *np, struct device *dev)
 	}
 	busid = *reg;
 
-	iface = kmalloc(sizeof(struct smu_iface), GFP_KERNEL);
+	iface = kzalloc(sizeof(struct smu_iface), GFP_KERNEL);
 	if (iface == NULL) {
 		printk(KERN_ERR "i2c-pmac-smu: can't allocate inteface !\n");
 		return -ENOMEM;
 	}
-	memset(iface, 0, sizeof(struct smu_iface));
 	init_completion(&iface->complete);
 	iface->busid = busid;
 

drivers/i2c/busses/i2c-prosavage.c

@@ -83,11 +83,6 @@ struct s_i2c_chip {
 /*
  * i2c configuration
  */
-#ifndef I2C_HW_B_S3VIA
-#define I2C_HW_B_S3VIA	0x18	/* S3VIA ProSavage adapter		*/
-#endif
-
-/* delays */
 #define CYCLE_DELAY	10
 #define TIMEOUT		(HZ / 2)
 
@@ -241,14 +236,12 @@ static int __devinit prosavage_probe(struct pci_dev *dev, const struct pci_devic
 	struct s_i2c_chip *chip;
 	struct s_i2c_bus  *bus;
 
-        pci_set_drvdata(dev, kmalloc(sizeof(struct s_i2c_chip), GFP_KERNEL)); 
+	pci_set_drvdata(dev, kzalloc(sizeof(struct s_i2c_chip), GFP_KERNEL));
 	chip = (struct s_i2c_chip *)pci_get_drvdata(dev);
 	if (chip == NULL) {
 		return -ENOMEM;
 	}
 
-	memset(chip, 0, sizeof(struct s_i2c_chip));
-
 	base = dev->resource[0].start & PCI_BASE_ADDRESS_MEM_MASK;
 	len  = dev->resource[0].end - base + 1;
 	chip->mmio = ioremap_nocache(base, len);
@@ -308,6 +301,7 @@ static struct pci_device_id prosavage_pci_tbl[] = {
 MODULE_DEVICE_TABLE (pci, prosavage_pci_tbl);
 
 static struct pci_driver prosavage_driver = {
+	.owner		=	THIS_MODULE,
 	.name		=	"prosavage_smbus",
 	.id_table	=	prosavage_pci_tbl,
 	.probe		=	prosavage_probe,

drivers/i2c/busses/i2c-s3c2410.c

@@ -896,6 +896,7 @@ static int s3c24xx_i2c_resume(struct device *dev)
 /* device driver for platform bus bits */
 
 static struct device_driver s3c2410_i2c_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "s3c2410-i2c",
 	.bus		= &platform_bus_type,
 	.probe		= s3c24xx_i2c_probe,
@@ -904,6 +905,7 @@ static struct device_driver s3c2410_i2c_driver = {
 };
 
 static struct device_driver s3c2440_i2c_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "s3c2440-i2c",
 	.bus		= &platform_bus_type,
 	.probe		= s3c24xx_i2c_probe,

drivers/i2c/busses/i2c-savage4.c

@@ -179,6 +179,7 @@ static void __devexit savage4_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver savage4_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "savage4_smbus",
 	.id_table	= savage4_ids,
 	.probe		= savage4_probe,

drivers/i2c/busses/i2c-sis5595.c

@@ -123,11 +123,12 @@ static int blacklist[] = {
 
 /* If force_addr is set to anything different from 0, we forcibly enable
    the device at the given address. */
-static u16 force_addr = 0;
+static u16 force_addr;
 module_param(force_addr, ushort, 0);
 MODULE_PARM_DESC(force_addr, "Initialize the base address of the i2c controller");
 
-static unsigned short sis5595_base = 0;
+static struct pci_driver sis5595_driver;
+static unsigned short sis5595_base;
 
 static u8 sis5595_read(u8 reg)
 {
@@ -172,7 +173,8 @@ static int sis5595_setup(struct pci_dev *SIS5595_dev)
 
 	/* NB: We grab just the two SMBus registers here, but this may still
 	 * interfere with ACPI :-(  */
-	if (!request_region(sis5595_base + SMB_INDEX, 2, "sis5595-smbus")) {
+	if (!request_region(sis5595_base + SMB_INDEX, 2,
+			    sis5595_driver.name)) {
 		dev_err(&SIS5595_dev->dev, "SMBus registers 0x%04x-0x%04x already in use!\n",
 			sis5595_base + SMB_INDEX, sis5595_base + SMB_INDEX + 1);
 		return -ENODEV;
@@ -364,7 +366,6 @@ static struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter sis5595_adapter = {
 	.owner		= THIS_MODULE,
 	.class          = I2C_CLASS_HWMON,
-	.name		= "unset",
 	.algo		= &smbus_algorithm,
 };
 
@@ -397,6 +398,7 @@ static void __devexit sis5595_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver sis5595_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "sis5595_smbus",
 	.id_table	= sis5595_ids,
 	.probe		= sis5595_probe,

drivers/i2c/busses/i2c-sis630.c

@@ -92,6 +92,8 @@
 #define SIS630_PCALL		0x04
 #define SIS630_BLOCK_DATA	0x05
 
+static struct pci_driver sis630_driver;
+
 /* insmod parameters */
 static int high_clock;
 static int force;
@@ -101,7 +103,7 @@ module_param(force, bool, 0);
 MODULE_PARM_DESC(force, "Forcibly enable the SIS630. DANGEROUS!");
 
 /* acpi base address */
-static unsigned short acpi_base = 0;
+static unsigned short acpi_base;
 
 /* supported chips */
 static int supported[] = {
@@ -432,7 +434,8 @@ static int sis630_setup(struct pci_dev *sis630_dev)
 	dev_dbg(&sis630_dev->dev, "ACPI base at 0x%04x\n", acpi_base);
 
 	/* Everything is happy, let's grab the memory and set things up. */
-	if (!request_region(acpi_base + SMB_STS, SIS630_SMB_IOREGION, "sis630-smbus")) {
+	if (!request_region(acpi_base + SMB_STS, SIS630_SMB_IOREGION,
+			    sis630_driver.name)) {
 		dev_err(&sis630_dev->dev, "SMBus registers 0x%04x-0x%04x already "
 			"in use!\n", acpi_base + SMB_STS, acpi_base + SMB_SAA);
 		goto exit;
@@ -455,7 +458,6 @@ static struct i2c_algorithm smbus_algorithm = {
 static struct i2c_adapter sis630_adapter = {
 	.owner		= THIS_MODULE,
 	.class		= I2C_CLASS_HWMON,
-	.name		= "unset",
 	.algo		= &smbus_algorithm,
 };
 
@@ -494,6 +496,7 @@ static void __devexit sis630_remove(struct pci_dev *dev)
 
 
 static struct pci_driver sis630_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "sis630_smbus",
 	.id_table	= sis630_ids,
 	.probe		= sis630_probe,

drivers/i2c/busses/i2c-sis96x.c

@@ -82,8 +82,9 @@
 #define SIS96x_PROC_CALL  0x04
 #define SIS96x_BLOCK_DATA 0x05
 
+static struct pci_driver sis96x_driver;
 static struct i2c_adapter sis96x_adapter;
-static u16 sis96x_smbus_base = 0;
+static u16 sis96x_smbus_base;
 
 static inline u8 sis96x_read(u8 reg)
 {
@@ -257,7 +258,6 @@ static struct i2c_adapter sis96x_adapter = {
 	.owner		= THIS_MODULE,
 	.class		= I2C_CLASS_HWMON,
 	.algo		= &smbus_algorithm,
-	.name		= "unset",
 };
 
 static struct pci_device_id sis96x_ids[] = {
@@ -294,7 +294,8 @@ static int __devinit sis96x_probe(struct pci_dev *dev,
 			sis96x_smbus_base);
 
 	/* Everything is happy, let's grab the memory and set things up. */
-	if (!request_region(sis96x_smbus_base, SMB_IOSIZE, "sis96x-smbus")) {
+	if (!request_region(sis96x_smbus_base, SMB_IOSIZE,
+			    sis96x_driver.name)) {
 		dev_err(&dev->dev, "SMBus registers 0x%04x-0x%04x "
 			"already in use!\n", sis96x_smbus_base,
 			sis96x_smbus_base + SMB_IOSIZE - 1);
@@ -328,6 +329,7 @@ static void __devexit sis96x_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver sis96x_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "sis96x_smbus",
 	.id_table	= sis96x_ids,
 	.probe		= sis96x_probe,

drivers/i2c/busses/i2c-via.c

@@ -43,9 +43,9 @@
 
 /* io-region reservation */
 #define IOSPACE		0x06
-#define IOTEXT		"via-i2c"
 
-static u16 pm_io_base = 0;
+static struct pci_driver vt586b_driver;
+static u16 pm_io_base;
 
 /*
    It does not appear from the datasheet that the GPIO pins are
@@ -130,7 +130,7 @@ static int __devinit vt586b_probe(struct pci_dev *dev, const struct pci_device_i
 	pci_read_config_word(dev, base, &pm_io_base);
 	pm_io_base &= (0xff << 8);
 
-	if (!request_region(I2C_DIR, IOSPACE, IOTEXT)) {
+	if (!request_region(I2C_DIR, IOSPACE, vt586b_driver.name)) {
 		dev_err(&dev->dev, "IO 0x%x-0x%x already in use\n", I2C_DIR, I2C_DIR + IOSPACE);
 		return -ENODEV;
 	}
@@ -159,6 +159,7 @@ static void __devexit vt586b_remove(struct pci_dev *dev)
 
 
 static struct pci_driver vt586b_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "vt586b_smbus",
 	.id_table	= vt586b_ids,
 	.probe		= vt586b_probe,

drivers/i2c/busses/i2c-viapro.c

@@ -1,9 +1,10 @@
 /*
     i2c-viapro.c - Part of lm_sensors, Linux kernel modules for hardware
               monitoring
-    Copyright (c) 1998 - 2002  Frodo Looijaard <frodol@dds.nl>, 
+    Copyright (c) 1998 - 2002  Frodo Looijaard <frodol@dds.nl>,
     Philip Edelbrock <phil@netroedge.com>, Kyösti Mälkki <kmalkki@cc.hut.fi>,
     Mark D. Studebaker <mdsxyz123@yahoo.com>
+    Copyright (C) 2005  Jean Delvare <khali@linux-fr.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -21,15 +22,19 @@
 */
 
 /*
-   Supports Via devices:
-	82C596A/B (0x3050)
-	82C596B (0x3051)
-	82C686A/B
-	8231
-	8233
-	8233A (0x3147 and 0x3177)
-	8235
-	8237
+   Supports the following VIA south bridges:
+
+   Chip name          PCI ID  REV     I2C block
+   VT82C596A          0x3050             no
+   VT82C596B          0x3051             no
+   VT82C686A          0x3057  0x30       no
+   VT82C686B          0x3057  0x40       yes
+   VT8231             0x8235             no?
+   VT8233             0x3074             yes
+   VT8233A            0x3147             yes?
+   VT8235             0x3177             yes
+   VT8237R            0x3227             yes
+
    Note: we assume there can only be one device, with one SMBus interface.
 */
 
@@ -38,7 +43,6 @@
 #include <linux/pci.h>
 #include <linux/kernel.h>
 #include <linux/stddef.h>
-#include <linux/sched.h>
 #include <linux/ioport.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
@@ -46,48 +50,37 @@
 
 static struct pci_dev *vt596_pdev;
 
-#define SMBBA1	   	 0x90
-#define SMBBA2     	 0x80
-#define SMBBA3     	 0xD0
+#define SMBBA1		0x90
+#define SMBBA2		0x80
+#define SMBBA3		0xD0
 
 /* SMBus address offsets */
 static unsigned short vt596_smba;
 #define SMBHSTSTS	(vt596_smba + 0)
-#define SMBHSLVSTS	(vt596_smba + 1)
 #define SMBHSTCNT	(vt596_smba + 2)
 #define SMBHSTCMD	(vt596_smba + 3)
 #define SMBHSTADD	(vt596_smba + 4)
 #define SMBHSTDAT0	(vt596_smba + 5)
 #define SMBHSTDAT1	(vt596_smba + 6)
 #define SMBBLKDAT	(vt596_smba + 7)
-#define SMBSLVCNT	(vt596_smba + 8)
-#define SMBSHDWCMD	(vt596_smba + 9)
-#define SMBSLVEVT	(vt596_smba + 0xA)
-#define SMBSLVDAT	(vt596_smba + 0xC)
 
 /* PCI Address Constants */
 
 /* SMBus data in configuration space can be found in two places,
-   We try to select the better one*/
-
-static unsigned short smb_cf_hstcfg = 0xD2;
+   We try to select the better one */
 
-#define SMBHSTCFG   (smb_cf_hstcfg)
-#define SMBSLVC     (smb_cf_hstcfg + 1)
-#define SMBSHDW1    (smb_cf_hstcfg + 2)
-#define SMBSHDW2    (smb_cf_hstcfg + 3)
-#define SMBREV      (smb_cf_hstcfg + 4)
+static unsigned short SMBHSTCFG = 0xD2;
 
 /* Other settings */
 #define MAX_TIMEOUT	500
-#define ENABLE_INT9	0
 
 /* VT82C596 constants */
-#define VT596_QUICK      0x00
-#define VT596_BYTE       0x04
-#define VT596_BYTE_DATA  0x08
-#define VT596_WORD_DATA  0x0C
-#define VT596_BLOCK_DATA 0x14
+#define VT596_QUICK		0x00
+#define VT596_BYTE		0x04
+#define VT596_BYTE_DATA		0x08
+#define VT596_WORD_DATA		0x0C
+#define VT596_BLOCK_DATA	0x14
+#define VT596_I2C_BLOCK_DATA	0x34
 
 
 /* If force is set to anything different from 0, we forcibly enable the
@@ -105,40 +98,65 @@ MODULE_PARM_DESC(force_addr,
 		 "EXTREMELY DANGEROUS!");
 
 
+static struct pci_driver vt596_driver;
 static struct i2c_adapter vt596_adapter;
 
-/* Another internally used function */
-static int vt596_transaction(void)
+#define FEATURE_I2CBLOCK	(1<<0)
+static unsigned int vt596_features;
+
+#ifdef DEBUG
+static void vt596_dump_regs(const char *msg, u8 size)
+{
+	dev_dbg(&vt596_adapter.dev, "%s: STS=%02x CNT=%02x CMD=%02x ADD=%02x "
+		"DAT=%02x,%02x\n", msg, inb_p(SMBHSTSTS), inb_p(SMBHSTCNT),
+		inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0),
+		inb_p(SMBHSTDAT1));
+
+	if (size == VT596_BLOCK_DATA
+	 || size == VT596_I2C_BLOCK_DATA) {
+		int i;
+
+		dev_dbg(&vt596_adapter.dev, "BLK=");
+		for (i = 0; i < I2C_SMBUS_BLOCK_MAX / 2; i++)
+			printk("%02x,", inb_p(SMBBLKDAT));
+		printk("\n");
+		dev_dbg(&vt596_adapter.dev, "    ");
+		for (; i < I2C_SMBUS_BLOCK_MAX - 1; i++)
+			printk("%02x,", inb_p(SMBBLKDAT));
+		printk("%02x\n", inb_p(SMBBLKDAT));
+	}
+}
+#else
+static inline void vt596_dump_regs(const char *msg, u8 size) { }
+#endif
+
+/* Return -1 on error, 0 on success */
+static int vt596_transaction(u8 size)
 {
 	int temp;
 	int result = 0;
 	int timeout = 0;
 
-	dev_dbg(&vt596_adapter.dev, "Transaction (pre): CNT=%02x, CMD=%02x, "
-		"ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT), 
-		inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), 
-		inb_p(SMBHSTDAT1));
+	vt596_dump_regs("Transaction (pre)", size);
 
 	/* Make sure the SMBus host is ready to start transmitting */
 	if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
 		dev_dbg(&vt596_adapter.dev, "SMBus busy (0x%02x). "
-				"Resetting...\n", temp);
-		
+			"Resetting... ", temp);
+
 		outb_p(temp, SMBHSTSTS);
 		if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
-			dev_dbg(&vt596_adapter.dev, "Failed! (0x%02x)\n", temp);
-			
+			printk("Failed! (0x%02x)\n", temp);
 			return -1;
 		} else {
-			dev_dbg(&vt596_adapter.dev, "Successfull!\n");
+			printk("Successful!\n");
 		}
 	}
 
-	/* start the transaction by setting bit 6 */
-	outb_p(inb(SMBHSTCNT) | 0x040, SMBHSTCNT);
+	/* Start the transaction by setting bit 6 */
+	outb_p(0x40 | (size & 0x3C), SMBHSTCNT);
 
-	/* We will always wait for a fraction of a second! 
-	   I don't know if VIA needs this, Intel did  */
+	/* We will always wait for a fraction of a second */
 	do {
 		msleep(1);
 		temp = inb_p(SMBHSTSTS);
@@ -147,77 +165,61 @@ static int vt596_transaction(void)
 	/* If the SMBus is still busy, we give up */
 	if (timeout >= MAX_TIMEOUT) {
 		result = -1;
-		dev_dbg(&vt596_adapter.dev, "SMBus Timeout!\n");
+		dev_err(&vt596_adapter.dev, "SMBus timeout!\n");
 	}
 
 	if (temp & 0x10) {
 		result = -1;
-		dev_dbg(&vt596_adapter.dev, "Error: Failed bus transaction\n");
+		dev_err(&vt596_adapter.dev, "Transaction failed (0x%02x)\n",
+			inb_p(SMBHSTCNT) & 0x3C);
 	}
 
 	if (temp & 0x08) {
 		result = -1;
-		dev_info(&vt596_adapter.dev, "Bus collision! SMBus may be "
-			"locked until next hard\nreset. (sorry!)\n");
-		/* Clock stops and slave is stuck in mid-transmission */
+		dev_err(&vt596_adapter.dev, "SMBus collision!\n");
 	}
 
 	if (temp & 0x04) {
 		result = -1;
-		dev_dbg(&vt596_adapter.dev, "Error: no response!\n");
+		/* Quick commands are used to probe for chips, so
+		   errors are expected, and we don't want to frighten the
+		   user. */
+		if ((inb_p(SMBHSTCNT) & 0x3C) != VT596_QUICK)
+			dev_err(&vt596_adapter.dev, "Transaction error!\n");
 	}
 
-	if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
+	/* Resetting status register */
+	if (temp & 0x1F)
 		outb_p(temp, SMBHSTSTS);
-		if ((temp = inb_p(SMBHSTSTS)) & 0x1F) {
-			dev_warn(&vt596_adapter.dev, "Failed reset at end "
-				 "of transaction (%02x)\n", temp);
-		}
-	}
 
-	dev_dbg(&vt596_adapter.dev, "Transaction (post): CNT=%02x, CMD=%02x, "
-		"ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTCNT),
-		inb_p(SMBHSTCMD), inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), 
-		inb_p(SMBHSTDAT1));
-	
+	vt596_dump_regs("Transaction (post)", size);
+
 	return result;
 }
 
-/* Return -1 on error. */
+/* Return -1 on error, 0 on success */
 static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
-		unsigned short flags,  char read_write, u8 command,
-		int size,  union i2c_smbus_data *data)
+		unsigned short flags, char read_write, u8 command,
+		int size, union i2c_smbus_data *data)
 {
-	int i, len;
+	int i;
 
 	switch (size) {
-	case I2C_SMBUS_PROC_CALL:
-		dev_info(&vt596_adapter.dev,
-			 "I2C_SMBUS_PROC_CALL not supported!\n");
-		return -1;
 	case I2C_SMBUS_QUICK:
-		outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-		       SMBHSTADD);
 		size = VT596_QUICK;
 		break;
 	case I2C_SMBUS_BYTE:
-		outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-		       SMBHSTADD);
 		if (read_write == I2C_SMBUS_WRITE)
 			outb_p(command, SMBHSTCMD);
 		size = VT596_BYTE;
 		break;
 	case I2C_SMBUS_BYTE_DATA:
-		outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-		       SMBHSTADD);
 		outb_p(command, SMBHSTCMD);
 		if (read_write == I2C_SMBUS_WRITE)
 			outb_p(data->byte, SMBHSTDAT0);
 		size = VT596_BYTE_DATA;
 		break;
 	case I2C_SMBUS_WORD_DATA:
-		outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-		       SMBHSTADD);
 		outb_p(command, SMBHSTCMD);
 		if (read_write == I2C_SMBUS_WRITE) {
 			outb_p(data->word & 0xff, SMBHSTDAT0);
@@ -225,28 +227,33 @@ static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
 		}
 		size = VT596_WORD_DATA;
 		break;
+	case I2C_SMBUS_I2C_BLOCK_DATA:
+		if (!(vt596_features & FEATURE_I2CBLOCK))
+			goto exit_unsupported;
+		if (read_write == I2C_SMBUS_READ)
+			outb_p(I2C_SMBUS_BLOCK_MAX, SMBHSTDAT0);
+		/* Fall through */
 	case I2C_SMBUS_BLOCK_DATA:
-		outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
-		       SMBHSTADD);
 		outb_p(command, SMBHSTCMD);
 		if (read_write == I2C_SMBUS_WRITE) {
-			len = data->block[0];
-			if (len < 0)
-				len = 0;
+			u8 len = data->block[0];
 			if (len > I2C_SMBUS_BLOCK_MAX)
 				len = I2C_SMBUS_BLOCK_MAX;
 			outb_p(len, SMBHSTDAT0);
-			i = inb_p(SMBHSTCNT);	/* Reset SMBBLKDAT */
+			inb_p(SMBHSTCNT);	/* Reset SMBBLKDAT */
 			for (i = 1; i <= len; i++)
 				outb_p(data->block[i], SMBBLKDAT);
 		}
-		size = VT596_BLOCK_DATA;
+		size = (size == I2C_SMBUS_I2C_BLOCK_DATA) ?
+		       VT596_I2C_BLOCK_DATA : VT596_BLOCK_DATA;
 		break;
+	default:
+		goto exit_unsupported;
 	}
 
-	outb_p((size & 0x1C) + (ENABLE_INT9 & 1), SMBHSTCNT);
+	outb_p(((addr & 0x7f) << 1) | read_write, SMBHSTADD);
 
-	if (vt596_transaction()) /* Error in transaction */
+	if (vt596_transaction(size)) /* Error in transaction */
 		return -1;
 
 	if ((read_write == I2C_SMBUS_WRITE) || (size == VT596_QUICK))
@@ -254,35 +261,39 @@ static s32 vt596_access(struct i2c_adapter *adap, u16 addr,
 
 	switch (size) {
 	case VT596_BYTE:
-		/* Where is the result put? I assume here it is in
-		 * SMBHSTDAT0 but it might just as well be in the
-		 * SMBHSTCMD. No clue in the docs 
-		 */
-		data->byte = inb_p(SMBHSTDAT0);
-		break;
 	case VT596_BYTE_DATA:
 		data->byte = inb_p(SMBHSTDAT0);
 		break;
 	case VT596_WORD_DATA:
 		data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8);
 		break;
+	case VT596_I2C_BLOCK_DATA:
 	case VT596_BLOCK_DATA:
 		data->block[0] = inb_p(SMBHSTDAT0);
 		if (data->block[0] > I2C_SMBUS_BLOCK_MAX)
 			data->block[0] = I2C_SMBUS_BLOCK_MAX;
-		i = inb_p(SMBHSTCNT);	/* Reset SMBBLKDAT */
+		inb_p(SMBHSTCNT);	/* Reset SMBBLKDAT */
 		for (i = 1; i <= data->block[0]; i++)
 			data->block[i] = inb_p(SMBBLKDAT);
 		break;
 	}
 	return 0;
+
+exit_unsupported:
+	dev_warn(&vt596_adapter.dev, "Unsupported command invoked! (0x%02x)\n",
+		 size);
+	return -1;
 }
 
 static u32 vt596_func(struct i2c_adapter *adapter)
 {
-	return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
+	u32 func = I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
 	    I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
 	    I2C_FUNC_SMBUS_BLOCK_DATA;
+
+	if (vt596_features & FEATURE_I2CBLOCK)
+		func |= I2C_FUNC_SMBUS_I2C_BLOCK;
+	return func;
 }
 
 static struct i2c_algorithm smbus_algorithm = {
@@ -294,7 +305,6 @@ static struct i2c_adapter vt596_adapter = {
 	.owner		= THIS_MODULE,
 	.class		= I2C_CLASS_HWMON,
 	.algo		= &smbus_algorithm,
-	.name		= "unset",
 };
 
 static int __devinit vt596_probe(struct pci_dev *pdev,
@@ -302,7 +312,7 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
 {
 	unsigned char temp;
 	int error = -ENODEV;
-	
+
 	/* Determine the address of the SMBus areas */
 	if (force_addr) {
 		vt596_smba = force_addr & 0xfff0;
@@ -311,12 +321,12 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
 	}
 
 	if ((pci_read_config_word(pdev, id->driver_data, &vt596_smba)) ||
-	    !(vt596_smba & 0x1)) {
+	    !(vt596_smba & 0x0001)) {
 		/* try 2nd address and config reg. for 596 */
 		if (id->device == PCI_DEVICE_ID_VIA_82C596_3 &&
 		    !pci_read_config_word(pdev, SMBBA2, &vt596_smba) &&
-		    (vt596_smba & 0x1)) {
-			smb_cf_hstcfg = 0x84;
+		    (vt596_smba & 0x0001)) {
+			SMBHSTCFG = 0x84;
 		} else {
 			/* no matches at all */
 			dev_err(&pdev->dev, "Cannot configure "
@@ -333,10 +343,10 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
 		return -ENODEV;
 	}
 
- found:
-	if (!request_region(vt596_smba, 8, "viapro-smbus")) {
+found:
+	if (!request_region(vt596_smba, 8, vt596_driver.name)) {
 		dev_err(&pdev->dev, "SMBus region 0x%x already in use!\n",
-		        vt596_smba);
+			vt596_smba);
 		return -ENODEV;
 	}
 
@@ -348,16 +358,16 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
 		pci_write_config_word(pdev, id->driver_data, vt596_smba);
 		pci_write_config_byte(pdev, SMBHSTCFG, temp | 0x01);
 		dev_warn(&pdev->dev, "WARNING: SMBus interface set to new "
-		     "address 0x%04x!\n", vt596_smba);
-	} else if ((temp & 1) == 0) {
+			 "address 0x%04x!\n", vt596_smba);
+	} else if (!(temp & 0x01)) {
 		if (force) {
-			/* NOTE: This assumes I/O space and other allocations 
-			 * WERE done by the Bios!  Don't complain if your 
-			 * hardware does weird things after enabling this. 
-			 * :') Check for Bios updates before resorting to 
+			/* NOTE: This assumes I/O space and other allocations
+			 * WERE done by the Bios!  Don't complain if your
+			 * hardware does weird things after enabling this.
+			 * :') Check for Bios updates before resorting to
 			 * this.
 			 */
-			pci_write_config_byte(pdev, SMBHSTCFG, temp | 1);
+			pci_write_config_byte(pdev, SMBHSTCFG, temp | 0x01);
 			dev_info(&pdev->dev, "Enabling SMBus device\n");
 		} else {
 			dev_err(&pdev->dev, "SMBUS: Error: Host SMBus "
@@ -367,22 +377,28 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
 		}
 	}
 
-	if ((temp & 0x0E) == 8)
-		dev_dbg(&pdev->dev, "using Interrupt 9 for SMBus.\n");
-	else if ((temp & 0x0E) == 0)
-		dev_dbg(&pdev->dev, "using Interrupt SMI# for SMBus.\n");
-	else
-		dev_dbg(&pdev->dev, "Illegal Interrupt configuration "
-			"(or code out of date)!\n");
-
-	pci_read_config_byte(pdev, SMBREV, &temp);
-	dev_dbg(&pdev->dev, "SMBREV = 0x%X\n", temp);
 	dev_dbg(&pdev->dev, "VT596_smba = 0x%X\n", vt596_smba);
 
+	switch (pdev->device) {
+	case PCI_DEVICE_ID_VIA_8237:
+	case PCI_DEVICE_ID_VIA_8235:
+	case PCI_DEVICE_ID_VIA_8233A:
+	case PCI_DEVICE_ID_VIA_8233_0:
+		vt596_features |= FEATURE_I2CBLOCK;
+		break;
+	case PCI_DEVICE_ID_VIA_82C686_4:
+		/* The VT82C686B (rev 0x40) does support I2C block
+		   transactions, but the VT82C686A (rev 0x30) doesn't */
+		if (!pci_read_config_byte(pdev, PCI_REVISION_ID, &temp)
+		 && temp >= 0x40)
+			vt596_features |= FEATURE_I2CBLOCK;
+		break;
+	}
+
 	vt596_adapter.dev.parent = &pdev->dev;
 	snprintf(vt596_adapter.name, I2C_NAME_SIZE,
-			"SMBus Via Pro adapter at %04x", vt596_smba);
-	
+		 "SMBus Via Pro adapter at %04x", vt596_smba);
+
 	vt596_pdev = pci_dev_get(pdev);
 	if (i2c_add_adapter(&vt596_adapter)) {
 		pci_dev_put(vt596_pdev);
@@ -395,7 +411,7 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
 	 */
 	return -ENODEV;
 
- release_region:
+release_region:
 	release_region(vt596_smba, 8);
 	return error;
 }
@@ -420,9 +436,10 @@ static struct pci_device_id vt596_ids[] = {
 	{ 0, }
 };
 
-MODULE_DEVICE_TABLE (pci, vt596_ids);
+MODULE_DEVICE_TABLE(pci, vt596_ids);
 
 static struct pci_driver vt596_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "vt596_smbus",
 	.id_table	= vt596_ids,
 	.probe		= vt596_probe,

drivers/i2c/busses/i2c-voodoo3.c

@@ -225,6 +225,7 @@ static void __devexit voodoo3_remove(struct pci_dev *dev)
 }
 
 static struct pci_driver voodoo3_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "voodoo3_smbus",
 	.id_table	= voodoo3_ids,
 	.probe		= voodoo3_probe,

drivers/i2c/busses/scx200_acb.c

@@ -442,14 +442,13 @@ static int  __init scx200_acb_create(int base, int index)
 	int rc = 0;
 	char description[64];
 
-	iface = kmalloc(sizeof(*iface), GFP_KERNEL);
+	iface = kzalloc(sizeof(*iface), GFP_KERNEL);
 	if (!iface) {
 		printk(KERN_ERR NAME ": can't allocate memory\n");
 		rc = -ENOMEM;
 		goto errout;
 	}
 
-	memset(iface, 0, sizeof(*iface));
 	adapter = &iface->adapter;
 	i2c_set_adapdata(adapter, iface);
 	snprintf(adapter->name, I2C_NAME_SIZE, "SCx200 ACB%d", index);

drivers/i2c/chips/Kconfig

@@ -126,4 +126,13 @@ config SENSORS_MAX6875
 	  This driver can also be built as a module.  If so, the module
 	  will be called max6875.
 
+config RTC_X1205_I2C
+	tristate "Xicor X1205 RTC chip"
+	depends on I2C && EXPERIMENTAL
+	help
+	  If you say yes here you get support for the Xicor X1205 RTC chip.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called x1205.
+
 endmenu

drivers/i2c/chips/Makefile

@@ -13,6 +13,7 @@ obj-$(CONFIG_SENSORS_PCF8591)	+= pcf8591.o
 obj-$(CONFIG_SENSORS_RTC8564)	+= rtc8564.o
 obj-$(CONFIG_ISP1301_OMAP)	+= isp1301_omap.o
 obj-$(CONFIG_TPS65010)		+= tps65010.o
+obj-$(CONFIG_RTC_X1205_I2C)	+= x1205.o
 
 ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
 EXTRA_CFLAGS += -DDEBUG

drivers/i2c/chips/ds1337.c

@@ -243,11 +243,10 @@ static int ds1337_detect(struct i2c_adapter *adapter, int address, int kind)
 				     I2C_FUNC_I2C))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct ds1337_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct ds1337_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct ds1337_data));
 	INIT_LIST_HEAD(&data->list);
 
 	/* The common I2C client data is placed right before the

drivers/i2c/chips/ds1374.c

@@ -167,7 +167,8 @@ static void ds1374_set_tlet(ulong arg)
 
 static ulong new_time;
 
-DECLARE_TASKLET_DISABLED(ds1374_tasklet, ds1374_set_tlet, (ulong) & new_time);
+static DECLARE_TASKLET_DISABLED(ds1374_tasklet, ds1374_set_tlet,
+				(ulong) & new_time);
 
 int ds1374_set_rtc_time(ulong nowtime)
 {
@@ -193,13 +194,11 @@ static int ds1374_probe(struct i2c_adapter *adap, int addr, int kind)
 	struct i2c_client *client;
 	int rc;
 
-	client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 	if (!client)
 		return -ENOMEM;
 
-	memset(client, 0, sizeof(struct i2c_client));
 	strncpy(client->name, DS1374_DRV_NAME, I2C_NAME_SIZE);
-	client->flags = I2C_DF_NOTIFY;
 	client->addr = addr;
 	client->adapter = adap;
 	client->driver = &ds1374_driver;

drivers/i2c/chips/eeprom.c

@@ -88,8 +88,8 @@ static void eeprom_update_client(struct i2c_client *client, u8 slice)
 		dev_dbg(&client->dev, "Starting eeprom update, slice %u\n", slice);
 
 		if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
-			for (i = slice << 5; i < (slice + 1) << 5; i += I2C_SMBUS_I2C_BLOCK_MAX)
-				if (i2c_smbus_read_i2c_block_data(client, i, data->data + i) != I2C_SMBUS_I2C_BLOCK_MAX)
+			for (i = slice << 5; i < (slice + 1) << 5; i += I2C_SMBUS_BLOCK_MAX)
+				if (i2c_smbus_read_i2c_block_data(client, i, data->data + i) != I2C_SMBUS_BLOCK_MAX)
 					goto exit;
 		} else {
 			if (i2c_smbus_write_byte(client, slice << 5)) {
@@ -155,7 +155,7 @@ static int eeprom_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* This function is called by i2c_probe */
-int eeprom_detect(struct i2c_adapter *adapter, int address, int kind)
+static int eeprom_detect(struct i2c_adapter *adapter, int address, int kind)
 {
 	struct i2c_client *new_client;
 	struct eeprom_data *data;
@@ -171,11 +171,10 @@ int eeprom_detect(struct i2c_adapter *adapter, int address, int kind)
 					    | I2C_FUNC_SMBUS_BYTE))
 		goto exit;
 
-	if (!(data = kmalloc(sizeof(struct eeprom_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct eeprom_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct eeprom_data));
 
 	new_client = &data->client;
 	memset(data->data, 0xff, EEPROM_SIZE);

drivers/i2c/chips/isp1301_omap.c

@@ -888,6 +888,7 @@ static int otg_remove(struct device *dev)
 }
 
 struct device_driver omap_otg_driver = {
+	.owner		= THIS_MODULE,
 	.name		= "omap_otg",
 	.bus		= &platform_bus_type,
 	.probe		= otg_probe,

drivers/i2c/chips/m41t00.c

@@ -174,13 +174,11 @@ m41t00_probe(struct i2c_adapter *adap, int addr, int kind)
 	struct i2c_client *client;
 	int rc;
 
-	client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 	if (!client)
 		return -ENOMEM;
 
-	memset(client, 0, sizeof(struct i2c_client));
 	strncpy(client->name, M41T00_DRV_NAME, I2C_NAME_SIZE);
-	client->flags = I2C_DF_NOTIFY;
 	client->addr = addr;
 	client->adapter = adap;
 	client->driver = &m41t00_driver;

drivers/i2c/chips/max6875.c

@@ -179,16 +179,14 @@ static int max6875_detect(struct i2c_adapter *adapter, int address, int kind)
 	if (address & 1)
 		return 0;
 
-	if (!(data = kmalloc(sizeof(struct max6875_data), GFP_KERNEL)))
+	if (!(data = kzalloc(sizeof(struct max6875_data), GFP_KERNEL)))
 		return -ENOMEM;
-	memset(data, 0, sizeof(struct max6875_data));
 
 	/* A fake client is created on the odd address */
-	if (!(fake_client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
+	if (!(fake_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit_kfree1;
 	}
-	memset(fake_client, 0, sizeof(struct i2c_client));
 
 	/* Init real i2c_client */
 	real_client = &data->client;

drivers/i2c/chips/pca9539.c

@@ -122,11 +122,10 @@ static int pca9539_detect(struct i2c_adapter *adapter, int address, int kind)
 
 	/* OK. For now, we presume we have a valid client. We now create the
 	   client structure, even though we cannot fill it completely yet. */
-	if (!(data = kmalloc(sizeof(struct pca9539_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct pca9539_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct pca9539_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/i2c/chips/pcf8574.c

@@ -115,7 +115,7 @@ static int pcf8574_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* This function is called by i2c_probe */
-int pcf8574_detect(struct i2c_adapter *adapter, int address, int kind)
+static int pcf8574_detect(struct i2c_adapter *adapter, int address, int kind)
 {
 	struct i2c_client *new_client;
 	struct pcf8574_data *data;
@@ -127,11 +127,10 @@ int pcf8574_detect(struct i2c_adapter *adapter, int address, int kind)
 
 	/* OK. For now, we presume we have a valid client. We now create the
 	   client structure, even though we cannot fill it completely yet. */
-	if (!(data = kmalloc(sizeof(struct pcf8574_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct pcf8574_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct pcf8574_data));
 
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/i2c/chips/pcf8591.c

@@ -166,7 +166,7 @@ static int pcf8591_attach_adapter(struct i2c_adapter *adapter)
 }
 
 /* This function is called by i2c_probe */
-int pcf8591_detect(struct i2c_adapter *adapter, int address, int kind)
+static int pcf8591_detect(struct i2c_adapter *adapter, int address, int kind)
 {
 	struct i2c_client *new_client;
 	struct pcf8591_data *data;
@@ -178,11 +178,10 @@ int pcf8591_detect(struct i2c_adapter *adapter, int address, int kind)
 
 	/* OK. For now, we presume we have a valid client. We now create the
 	   client structure, even though we cannot fill it completely yet. */
-	if (!(data = kmalloc(sizeof(struct pcf8591_data), GFP_KERNEL))) {
+	if (!(data = kzalloc(sizeof(struct pcf8591_data), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto exit;
 	}
-	memset(data, 0, sizeof(struct pcf8591_data));
 	
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);

drivers/i2c/chips/rtc8564.c

@@ -148,17 +148,16 @@ static int rtc8564_attach(struct i2c_adapter *adap, int addr, int kind)
 		{addr, I2C_M_RD, 2, data}
 	};
 
-	d = kmalloc(sizeof(struct rtc8564_data), GFP_KERNEL);
+	d = kzalloc(sizeof(struct rtc8564_data), GFP_KERNEL);
 	if (!d) {
 		ret = -ENOMEM;
 		goto done;
 	}
-	memset(d, 0, sizeof(struct rtc8564_data));
 	new_client = &d->client;
 
 	strlcpy(new_client->name, "RTC8564", I2C_NAME_SIZE);
 	i2c_set_clientdata(new_client, d);
-	new_client->flags = I2C_CLIENT_ALLOW_USE | I2C_DF_NOTIFY;
+	new_client->flags = I2C_CLIENT_ALLOW_USE;
 	new_client->addr = addr;
 	new_client->adapter = adap;
 	new_client->driver = &rtc8564_driver;

drivers/i2c/chips/tps65010.c

@@ -500,11 +500,10 @@ tps65010_probe(struct i2c_adapter *bus, int address, int kind)
 		return 0;
 	}
 
-	tps = kmalloc(sizeof *tps, GFP_KERNEL);
+	tps = kzalloc(sizeof *tps, GFP_KERNEL);
 	if (!tps)
 		return 0;
 
-	memset(tps, 0, sizeof *tps);
 	init_MUTEX(&tps->lock);
 	INIT_WORK(&tps->work, tps65010_work, tps);
 	tps->irq = -1;

drivers/i2c/chips/x1205.c

@@ -0,0 +1,698 @@
+/*
+ *  x1205.c - An i2c driver for the Xicor X1205 RTC
+ *  Copyright 2004 Karen Spearel
+ *  Copyright 2005 Alessandro Zummo
+ *
+ *  please send all reports to:
+ *	kas11 at tampabay dot rr dot com
+ *      a dot zummo at towertech dot it
+ *
+ *  based on the other drivers in this same directory.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/string.h>
+#include <linux/bcd.h>
+#include <linux/rtc.h>
+#include <linux/list.h>
+
+#include <linux/x1205.h>
+
+#define DRV_VERSION "0.9.9"
+
+/* Addresses to scan: none. This chip is located at
+ * 0x6f and uses a two bytes register addressing.
+ * Two bytes need to be written to read a single register,
+ * while most other chips just require one and take the second
+ * one as the data to be written. To prevent corrupting
+ * unknown chips, the user must explicitely set the probe parameter.
+ */
+
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD;
+I2C_CLIENT_MODULE_PARM(hctosys,
+	"Set the system time from the hardware clock upon initialization");
+
+/* offsets into CCR area */
+
+#define CCR_SEC			0
+#define CCR_MIN			1
+#define CCR_HOUR		2
+#define CCR_MDAY		3
+#define CCR_MONTH		4
+#define CCR_YEAR		5
+#define CCR_WDAY		6
+#define CCR_Y2K			7
+
+#define X1205_REG_SR		0x3F	/* status register */
+#define X1205_REG_Y2K		0x37
+#define X1205_REG_DW		0x36
+#define X1205_REG_YR		0x35
+#define X1205_REG_MO		0x34
+#define X1205_REG_DT		0x33
+#define X1205_REG_HR		0x32
+#define X1205_REG_MN		0x31
+#define X1205_REG_SC		0x30
+#define X1205_REG_DTR		0x13
+#define X1205_REG_ATR		0x12
+#define X1205_REG_INT		0x11
+#define X1205_REG_0		0x10
+#define X1205_REG_Y2K1		0x0F
+#define X1205_REG_DWA1		0x0E
+#define X1205_REG_YRA1		0x0D
+#define X1205_REG_MOA1		0x0C
+#define X1205_REG_DTA1		0x0B
+#define X1205_REG_HRA1		0x0A
+#define X1205_REG_MNA1		0x09
+#define X1205_REG_SCA1		0x08
+#define X1205_REG_Y2K0		0x07
+#define X1205_REG_DWA0		0x06
+#define X1205_REG_YRA0		0x05
+#define X1205_REG_MOA0		0x04
+#define X1205_REG_DTA0		0x03
+#define X1205_REG_HRA0		0x02
+#define X1205_REG_MNA0		0x01
+#define X1205_REG_SCA0		0x00
+
+#define X1205_CCR_BASE		0x30	/* Base address of CCR */
+#define X1205_ALM0_BASE		0x00	/* Base address of ALARM0 */
+
+#define X1205_SR_RTCF		0x01	/* Clock failure */
+#define X1205_SR_WEL		0x02	/* Write Enable Latch */
+#define X1205_SR_RWEL		0x04	/* Register Write Enable */
+
+#define X1205_DTR_DTR0		0x01
+#define X1205_DTR_DTR1		0x02
+#define X1205_DTR_DTR2		0x04
+
+#define X1205_HR_MIL		0x80	/* Set in ccr.hour for 24 hr mode */
+
+/* Prototypes */
+static int x1205_attach(struct i2c_adapter *adapter);
+static int x1205_detach(struct i2c_client *client);
+static int x1205_probe(struct i2c_adapter *adapter, int address, int kind);
+static int x1205_command(struct i2c_client *client, unsigned int cmd,
+	void *arg);
+
+static struct i2c_driver x1205_driver = {
+	.owner		= THIS_MODULE,
+	.name		= "x1205",
+	.flags		= I2C_DF_NOTIFY,
+	.attach_adapter = &x1205_attach,
+	.detach_client	= &x1205_detach,
+};
+
+struct x1205_data {
+	struct i2c_client client;
+	struct list_head list;
+	unsigned int epoch;
+};
+
+static const unsigned char days_in_mo[] =
+	{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
+
+static LIST_HEAD(x1205_clients);
+
+/* Workaround until the I2C subsytem will allow to send
+ * commands to a specific client. This function will send the command
+ * to the first client.
+ */
+int x1205_do_command(unsigned int cmd, void *arg)
+{
+	struct list_head *walk;
+	struct list_head *tmp;
+	struct x1205_data *data;
+
+	list_for_each_safe(walk, tmp, &x1205_clients) {
+		data = list_entry(walk, struct x1205_data, list);
+		return x1205_command(&data->client, cmd, arg);
+	}
+
+	return -ENODEV;
+}
+
+#define is_leap(year) \
+	((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+
+/* make sure the rtc_time values are in bounds */
+static int x1205_validate_tm(struct rtc_time *tm)
+{
+	int year = tm->tm_year + 1900;
+
+	if ((tm->tm_year < 70) || (tm->tm_year > 255))
+		return -EINVAL;
+
+	if ((tm->tm_mon > 11) || (tm->tm_mday == 0))
+		return -EINVAL;
+
+	if (tm->tm_mday > days_in_mo[tm->tm_mon]
+		+ ((tm->tm_mon == 1) && is_leap(year)))
+		return -EINVAL;
+
+	if ((tm->tm_hour >= 24) || (tm->tm_min >= 60) || (tm->tm_sec >= 60))
+		return -EINVAL;
+
+	return 0;
+}
+
+/*
+ * In the routines that deal directly with the x1205 hardware, we use
+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch
+ * Epoch is initialized as 2000. Time is set to UTC.
+ */
+static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm,
+				u8 reg_base)
+{
+	unsigned char dt_addr[2] = { 0, reg_base };
+	static unsigned char sr_addr[2] = { 0, X1205_REG_SR };
+
+	unsigned char buf[8], sr;
+
+	struct i2c_msg msgs[] = {
+		{ client->addr, 0, 2, sr_addr },	/* setup read ptr */
+		{ client->addr, I2C_M_RD, 1, &sr }, 	/* read status */
+		{ client->addr, 0, 2, dt_addr },	/* setup read ptr */
+		{ client->addr, I2C_M_RD, 8, buf },	/* read date */
+	};
+
+	struct x1205_data *data = i2c_get_clientdata(client);
+
+	/* read status register */
+	if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+		dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+		return -EIO;
+	}
+
+	/* check for battery failure */
+	if (sr & X1205_SR_RTCF) {
+		dev_warn(&client->dev,
+			"Clock had a power failure, you must set the date.\n");
+		return -EINVAL;
+	}
+
+	/* read date registers */
+	if ((i2c_transfer(client->adapter, &msgs[2], 2)) != 2) {
+		dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+		return -EIO;
+	}
+
+	dev_dbg(&client->dev,
+		"%s: raw read data - sec=%02x, min=%02x, hr=%02x, "
+		"mday=%02x, mon=%02x, year=%02x, wday=%02x, y2k=%02x\n",
+		__FUNCTION__,
+		buf[0], buf[1], buf[2], buf[3],
+		buf[4], buf[5], buf[6], buf[7]);
+
+	tm->tm_sec = BCD2BIN(buf[CCR_SEC]);
+	tm->tm_min = BCD2BIN(buf[CCR_MIN]);
+	tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */
+	tm->tm_mday = BCD2BIN(buf[CCR_MDAY]);
+	tm->tm_mon = BCD2BIN(buf[CCR_MONTH]);
+	data->epoch = BCD2BIN(buf[CCR_Y2K]) * 100;
+	tm->tm_year = BCD2BIN(buf[CCR_YEAR]) + data->epoch - 1900;
+	tm->tm_wday = buf[CCR_WDAY];
+
+	dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
+		"mday=%d, mon=%d, year=%d, wday=%d\n",
+		__FUNCTION__,
+		tm->tm_sec, tm->tm_min, tm->tm_hour,
+		tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+	return 0;
+}
+
+static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
+				int datetoo, u8 reg_base)
+{
+	int i, err, xfer;
+
+	unsigned char buf[8];
+
+	static const unsigned char wel[3] = { 0, X1205_REG_SR,
+						X1205_SR_WEL };
+
+	static const unsigned char rwel[3] = { 0, X1205_REG_SR,
+						X1205_SR_WEL | X1205_SR_RWEL };
+
+	static const unsigned char diswe[3] = { 0, X1205_REG_SR, 0 };
+
+	struct x1205_data *data = i2c_get_clientdata(client);
+
+	/* check if all values in the tm struct are correct */
+	if ((err = x1205_validate_tm(tm)) < 0)
+		return err;
+
+	dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
+		"mday=%d, mon=%d, year=%d, wday=%d\n",
+		__FUNCTION__,
+		tm->tm_sec, tm->tm_min, tm->tm_hour,
+		tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+	buf[CCR_SEC] = BIN2BCD(tm->tm_sec);
+	buf[CCR_MIN] = BIN2BCD(tm->tm_min);
+
+	/* set hour and 24hr bit */
+	buf[CCR_HOUR] = BIN2BCD(tm->tm_hour) | X1205_HR_MIL;
+
+	/* should we also set the date? */
+	if (datetoo) {
+		buf[CCR_MDAY] = BIN2BCD(tm->tm_mday);
+
+		/* month, 0 - 11 */
+		buf[CCR_MONTH] = BIN2BCD(tm->tm_mon);
+
+		/* year, since 1900 */
+		buf[CCR_YEAR] = BIN2BCD(tm->tm_year + 1900 - data->epoch);
+		buf[CCR_WDAY] = tm->tm_wday & 0x07;
+		buf[CCR_Y2K] = BIN2BCD(data->epoch / 100);
+	}
+
+	/* this sequence is required to unlock the chip */
+	xfer = i2c_master_send(client, wel, 3);
+	if (xfer != 3) {
+		dev_err(&client->dev, "%s: wel - %d\n", __FUNCTION__, xfer);
+		return -EIO;
+	}
+
+	xfer = i2c_master_send(client, rwel, 3);
+	if (xfer != 3) {
+		dev_err(&client->dev, "%s: rwel - %d\n", __FUNCTION__, xfer);
+		return -EIO;
+	}
+
+	/* write register's data */
+	for (i = 0; i < (datetoo ? 8 : 3); i++) {
+		unsigned char rdata[3] = { 0, reg_base + i, buf[i] };
+
+		xfer = i2c_master_send(client, rdata, 3);
+		if (xfer != 3) {
+			dev_err(&client->dev,
+				"%s: xfer=%d addr=%02x, data=%02x\n",
+				__FUNCTION__,
+				 xfer, rdata[1], rdata[2]);
+			return -EIO;
+		}
+	};
+
+	/* disable further writes */
+	xfer = i2c_master_send(client, diswe, 3);
+	if (xfer != 3) {
+		dev_err(&client->dev, "%s: diswe - %d\n", __FUNCTION__, xfer);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int x1205_get_dtrim(struct i2c_client *client, int *trim)
+{
+	unsigned char dtr;
+	static unsigned char dtr_addr[2] = { 0, X1205_REG_DTR };
+
+	struct i2c_msg msgs[] = {
+		{ client->addr, 0, 2, dtr_addr },	/* setup read ptr */
+		{ client->addr, I2C_M_RD, 1, &dtr }, 	/* read dtr */
+	};
+
+	/* read dtr register */
+	if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+		dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+		return -EIO;
+	}
+
+	dev_dbg(&client->dev, "%s: raw dtr=%x\n", __FUNCTION__, dtr);
+
+	*trim = 0;
+
+	if (dtr & X1205_DTR_DTR0)
+		*trim += 20;
+
+	if (dtr & X1205_DTR_DTR1)
+		*trim += 10;
+
+	if (dtr & X1205_DTR_DTR2)
+		*trim = -*trim;
+
+	return 0;
+}
+
+static int x1205_get_atrim(struct i2c_client *client, int *trim)
+{
+	s8 atr;
+	static unsigned char atr_addr[2] = { 0, X1205_REG_ATR };
+
+	struct i2c_msg msgs[] = {
+		{ client->addr, 0, 2, atr_addr },	/* setup read ptr */
+		{ client->addr, I2C_M_RD, 1, &atr }, 	/* read atr */
+	};
+
+	/* read atr register */
+	if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
+		dev_err(&client->dev, "%s: read error\n", __FUNCTION__);
+		return -EIO;
+	}
+
+	dev_dbg(&client->dev, "%s: raw atr=%x\n", __FUNCTION__, atr);
+
+	/* atr is a two's complement value on 6 bits,
+	 * perform sign extension. The formula is
+	 * Catr = (atr * 0.25pF) + 11.00pF.
+	 */
+	if (atr & 0x20)
+		atr |= 0xC0;
+
+	dev_dbg(&client->dev, "%s: raw atr=%x (%d)\n", __FUNCTION__, atr, atr);
+
+	*trim = (atr * 250) + 11000;
+
+	dev_dbg(&client->dev, "%s: real=%d\n", __FUNCTION__, *trim);
+
+	return 0;
+}
+
+static int x1205_hctosys(struct i2c_client *client)
+{
+	int err;
+
+	struct rtc_time tm;
+	struct timespec tv;
+
+	err = x1205_command(client, X1205_CMD_GETDATETIME, &tm);
+
+	if (err) {
+		dev_err(&client->dev,
+			"Unable to set the system clock\n");
+		return err;
+	}
+
+	/* IMPORTANT: the RTC only stores whole seconds. It is arbitrary
+	 * whether it stores the most close value or the value with partial
+	 * seconds truncated. However, it is important that we use it to store
+	 * the truncated value. This is because otherwise it is necessary,
+	 * in an rtc sync function, to read both xtime.tv_sec and
+	 * xtime.tv_nsec. On some processors (i.e. ARM), an atomic read
+	 * of >32bits is not possible. So storing the most close value would
+	 * slow down the sync API. So here we have the truncated value and
+	 * the best guess is to add 0.5s.
+	 */
+
+	tv.tv_nsec = NSEC_PER_SEC >> 1;
+
+	/* WARNING: this is not the C library 'mktime' call, it is a built in
+	 * inline function from include/linux/time.h.  It expects (requires)
+	 * the month to be in the range 1-12
+	 */
+
+	tv.tv_sec  = mktime(tm.tm_year + 1900, tm.tm_mon + 1,
+				tm.tm_mday, tm.tm_hour,
+				tm.tm_min, tm.tm_sec);
+
+	do_settimeofday(&tv);
+
+	dev_info(&client->dev,
+		"setting the system clock to %d-%d-%d %d:%d:%d\n",
+		tm.tm_year + 1900, tm.tm_mon + 1,
+		tm.tm_mday, tm.tm_hour, tm.tm_min,
+		tm.tm_sec);
+
+	return 0;
+}
+
+struct x1205_limit
+{
+	unsigned char reg;
+	unsigned char mask;
+	unsigned char min;
+	unsigned char max;
+};
+
+static int x1205_validate_client(struct i2c_client *client)
+{
+	int i, xfer;
+
+	/* Probe array. We will read the register at the specified
+	 * address and check if the given bits are zero.
+	 */
+	static const unsigned char probe_zero_pattern[] = {
+		/* register, mask */
+		X1205_REG_SR,	0x18,
+		X1205_REG_DTR,	0xF8,
+		X1205_REG_ATR,	0xC0,
+		X1205_REG_INT,	0x18,
+		X1205_REG_0,	0xFF,
+	};
+
+	static const struct x1205_limit probe_limits_pattern[] = {
+		/* register, mask, min, max */
+		{ X1205_REG_Y2K,	0xFF,	19,	20	},
+		{ X1205_REG_DW,		0xFF,	0,	6	},
+		{ X1205_REG_YR,		0xFF,	0,	99	},
+		{ X1205_REG_MO,		0xFF,	0,	12	},
+		{ X1205_REG_DT,		0xFF,	0,	31	},
+		{ X1205_REG_HR,		0x7F,	0,	23	},
+		{ X1205_REG_MN,		0xFF,	0,	59	},
+		{ X1205_REG_SC,		0xFF,	0,	59	},
+		{ X1205_REG_Y2K1,	0xFF,	19,	20	},
+		{ X1205_REG_Y2K0,	0xFF,	19,	20	},
+	};
+
+	/* check that registers have bits a 0 where expected */
+	for (i = 0; i < ARRAY_SIZE(probe_zero_pattern); i += 2) {
+		unsigned char buf;
+
+		unsigned char addr[2] = { 0, probe_zero_pattern[i] };
+
+		struct i2c_msg msgs[2] = {
+			{ client->addr, 0, 2, addr },
+			{ client->addr, I2C_M_RD, 1, &buf },
+		};
+
+		xfer = i2c_transfer(client->adapter, msgs, 2);
+		if (xfer != 2) {
+			dev_err(&client->adapter->dev,
+				"%s: could not read register %x\n",
+				__FUNCTION__, addr[1]);
+
+			return -EIO;
+		}
+
+		if ((buf & probe_zero_pattern[i+1]) != 0) {
+			dev_err(&client->adapter->dev,
+				"%s: register=%02x, zero pattern=%d, value=%x\n",
+				__FUNCTION__, addr[1], i, buf);
+
+			return -ENODEV;
+		}
+	}
+
+	/* check limits (only registers with bcd values) */
+	for (i = 0; i < ARRAY_SIZE(probe_limits_pattern); i++) {
+		unsigned char reg, value;
+
+		unsigned char addr[2] = { 0, probe_limits_pattern[i].reg };
+
+		struct i2c_msg msgs[2] = {
+			{ client->addr, 0, 2, addr },
+			{ client->addr, I2C_M_RD, 1, &reg },
+		};
+
+		xfer = i2c_transfer(client->adapter, msgs, 2);
+
+		if (xfer != 2) {
+			dev_err(&client->adapter->dev,
+				"%s: could not read register %x\n",
+				__FUNCTION__, addr[1]);
+
+			return -EIO;
+		}
+
+		value = BCD2BIN(reg & probe_limits_pattern[i].mask);
+
+		if (value > probe_limits_pattern[i].max ||
+			value < probe_limits_pattern[i].min) {
+			dev_dbg(&client->adapter->dev,
+				"%s: register=%x, lim pattern=%d, value=%d\n",
+				__FUNCTION__, addr[1], i, value);
+
+			return -ENODEV;
+		}
+	}
+
+	return 0;
+}
+
+static int x1205_attach(struct i2c_adapter *adapter)
+{
+	dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+
+	return i2c_probe(adapter, &addr_data, x1205_probe);
+}
+
+int x1205_direct_attach(int adapter_id,
+	struct i2c_client_address_data *address_data)
+{
+	int err;
+	struct i2c_adapter *adapter = i2c_get_adapter(adapter_id);
+
+	if (adapter) {
+		err = i2c_probe(adapter,
+			address_data, x1205_probe);
+
+		i2c_put_adapter(adapter);
+
+		return err;
+	}
+
+	return -ENODEV;
+}
+
+static int x1205_probe(struct i2c_adapter *adapter, int address, int kind)
+{
+	struct i2c_client *client;
+	struct x1205_data *data;
+
+	int err = 0;
+
+	dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
+		err = -ENODEV;
+		goto exit;
+	}
+
+	if (!(data = kzalloc(sizeof(struct x1205_data), GFP_KERNEL))) {
+		err = -ENOMEM;
+		goto exit;
+	}
+
+	/* Initialize our structures */
+	data->epoch = 2000;
+
+	client = &data->client;
+	client->addr = address;
+	client->driver = &x1205_driver;
+	client->adapter	= adapter;
+
+	strlcpy(client->name, "x1205", I2C_NAME_SIZE);
+
+	i2c_set_clientdata(client, data);
+
+	/* Verify the chip is really an X1205 */
+	if (kind < 0) {
+		if (x1205_validate_client(client) < 0) {
+			err = -ENODEV;
+			goto exit_kfree;
+		}
+	}
+
+	/* Inform the i2c layer */
+	if ((err = i2c_attach_client(client)))
+		goto exit_kfree;
+
+	list_add(&data->list, &x1205_clients);
+
+	dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
+
+	/* If requested, set the system time */
+	if (hctosys)
+		x1205_hctosys(client);
+
+	return 0;
+
+exit_kfree:
+	kfree(data);
+
+exit:
+	return err;
+}
+
+static int x1205_detach(struct i2c_client *client)
+{
+	int err;
+	struct x1205_data *data = i2c_get_clientdata(client);
+
+	dev_dbg(&client->dev, "%s\n", __FUNCTION__);
+
+	if ((err = i2c_detach_client(client)))
+		return err;
+
+	list_del(&data->list);
+
+	kfree(data);
+
+	return 0;
+}
+
+static int x1205_command(struct i2c_client *client, unsigned int cmd,
+	void *param)
+{
+	if (param == NULL)
+		return -EINVAL;
+
+	if (!capable(CAP_SYS_TIME))
+		return -EACCES;
+
+	dev_dbg(&client->dev, "%s: cmd=%d\n", __FUNCTION__, cmd);
+
+	switch (cmd) {
+	case X1205_CMD_GETDATETIME:
+		return x1205_get_datetime(client, param, X1205_CCR_BASE);
+
+	case X1205_CMD_SETTIME:
+		return x1205_set_datetime(client, param, 0,
+				X1205_CCR_BASE);
+
+	case X1205_CMD_SETDATETIME:
+		return x1205_set_datetime(client, param, 1,
+				X1205_CCR_BASE);
+
+	case X1205_CMD_GETALARM:
+		return x1205_get_datetime(client, param, X1205_ALM0_BASE);
+
+	case X1205_CMD_SETALARM:
+		return x1205_set_datetime(client, param, 1,
+				X1205_ALM0_BASE);
+
+	case X1205_CMD_GETDTRIM:
+		return x1205_get_dtrim(client, param);
+
+	case X1205_CMD_GETATRIM:
+		return x1205_get_atrim(client, param);
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int __init x1205_init(void)
+{
+	return i2c_add_driver(&x1205_driver);
+}
+
+static void __exit x1205_exit(void)
+{
+	i2c_del_driver(&x1205_driver);
+}
+
+MODULE_AUTHOR(
+	"Karen Spearel <kas11@tampabay.rr.com>, "
+	"Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("Xicor X1205 RTC driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+EXPORT_SYMBOL_GPL(x1205_do_command);
+EXPORT_SYMBOL_GPL(x1205_direct_attach);
+
+module_init(x1205_init);
+module_exit(x1205_exit);

drivers/i2c/i2c-core.c

@@ -19,7 +19,8 @@
 
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi>.
    All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl>
-   SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com>                */
+   SMBus 2.0 support by Mark Studebaker <mdsxyz123@yahoo.com> and
+   Jean Delvare <khali@linux-fr.org> */
 
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -85,6 +86,7 @@ void i2c_adapter_dev_release(struct device *dev)
 }
 
 struct device_driver i2c_adapter_driver = {
+	.owner = THIS_MODULE,
 	.name =	"i2c_adapter",
 	.bus = &i2c_bus_type,
 	.probe = i2c_device_probe,
@@ -98,6 +100,7 @@ static void i2c_adapter_class_dev_release(struct class_device *dev)
 }
 
 struct class i2c_adapter_class = {
+	.owner =	THIS_MODULE,
 	.name =		"i2c-adapter",
 	.release =	&i2c_adapter_class_dev_release,
 };
@@ -291,6 +294,7 @@ int i2c_add_driver(struct i2c_driver *driver)
 	down(&core_lists);
 
 	/* add the driver to the list of i2c drivers in the driver core */
+	driver->driver.owner = driver->owner;
 	driver->driver.name = driver->name;
 	driver->driver.bus = &i2c_bus_type;
 	driver->driver.probe = i2c_device_probe;
@@ -706,10 +710,6 @@ int i2c_probe(struct i2c_adapter *adapter,
 	int i, err;
 	int adap_id = i2c_adapter_id(adapter);
 
-	/* Forget it if we can't probe using SMBUS_QUICK */
-	if (! i2c_check_functionality(adapter,I2C_FUNC_SMBUS_QUICK))
-		return -1;
-
 	/* Force entries are done first, and are not affected by ignore
 	   entries */
 	if (address_data->forces) {
@@ -736,6 +736,17 @@ int i2c_probe(struct i2c_adapter *adapter,
 		}
 	}
 
+	/* Stop here if we can't use SMBUS_QUICK */
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_QUICK)) {
+		if (address_data->probe[0] == I2C_CLIENT_END
+		 && address_data->normal_i2c[0] == I2C_CLIENT_END)
+		 	return 0;
+
+		dev_warn(&adapter->dev, "SMBus Quick command not supported, "
+			 "can't probe for chips\n");
+		return -1;
+	}
+
 	/* Probe entries are done second, and are not affected by ignore
 	   entries either */
 	for (i = 0; address_data->probe[i] != I2C_CLIENT_END; i += 2) {
@@ -820,101 +831,44 @@ crc8(u16 data)
 	return (u8)(data >> 8);
 }
 
-/* CRC over count bytes in the first array plus the bytes in the rest
-   array if it is non-null. rest[0] is the (length of rest) - 1
-   and is included. */
-static u8 i2c_smbus_partial_pec(u8 crc, int count, u8 *first, u8 *rest)
+/* Incremental CRC8 over count bytes in the array pointed to by p */
+static u8 i2c_smbus_pec(u8 crc, u8 *p, size_t count)
 {
 	int i;
 
 	for(i = 0; i < count; i++)
-		crc = crc8((crc ^ first[i]) << 8);
-	if(rest != NULL)
-		for(i = 0; i <= rest[0]; i++)
-			crc = crc8((crc ^ rest[i]) << 8);
+		crc = crc8((crc ^ p[i]) << 8);
 	return crc;
 }
 
-static u8 i2c_smbus_pec(int count, u8 *first, u8 *rest)
+/* Assume a 7-bit address, which is reasonable for SMBus */
+static u8 i2c_smbus_msg_pec(u8 pec, struct i2c_msg *msg)
 {
-	return i2c_smbus_partial_pec(0, count, first, rest);
+	/* The address will be sent first */
+	u8 addr = (msg->addr << 1) | !!(msg->flags & I2C_M_RD);
+	pec = i2c_smbus_pec(pec, &addr, 1);
+
+	/* The data buffer follows */
+	return i2c_smbus_pec(pec, msg->buf, msg->len);
 }
 
-/* Returns new "size" (transaction type)
-   Note that we convert byte to byte_data and byte_data to word_data
-   rather than invent new xxx_PEC transactions. */
-static int i2c_smbus_add_pec(u16 addr, u8 command, int size,
-			     union i2c_smbus_data *data)
+/* Used for write only transactions */
+static inline void i2c_smbus_add_pec(struct i2c_msg *msg)
 {
-	u8 buf[3];
-
-	buf[0] = addr << 1;
-	buf[1] = command;
-	switch(size) {
-		case I2C_SMBUS_BYTE:
-			data->byte = i2c_smbus_pec(2, buf, NULL);
-			size = I2C_SMBUS_BYTE_DATA;
-			break;
-		case I2C_SMBUS_BYTE_DATA:
-			buf[2] = data->byte;
-			data->word = buf[2] ||
-			            (i2c_smbus_pec(3, buf, NULL) << 8);
-			size = I2C_SMBUS_WORD_DATA;
-			break;
-		case I2C_SMBUS_WORD_DATA:
-			/* unsupported */
-			break;
-		case I2C_SMBUS_BLOCK_DATA:
-			data->block[data->block[0] + 1] =
-			             i2c_smbus_pec(2, buf, data->block);
-			size = I2C_SMBUS_BLOCK_DATA_PEC;
-			break;
-	}
-	return size;	
+	msg->buf[msg->len] = i2c_smbus_msg_pec(0, msg);
+	msg->len++;
 }
 
-static int i2c_smbus_check_pec(u16 addr, u8 command, int size, u8 partial,
-			       union i2c_smbus_data *data)
+/* Return <0 on CRC error
+   If there was a write before this read (most cases) we need to take the
+   partial CRC from the write part into account.
+   Note that this function does modify the message (we need to decrease the
+   message length to hide the CRC byte from the caller). */
+static int i2c_smbus_check_pec(u8 cpec, struct i2c_msg *msg)
 {
-	u8 buf[3], rpec, cpec;
+	u8 rpec = msg->buf[--msg->len];
+	cpec = i2c_smbus_msg_pec(cpec, msg);
 
-	buf[1] = command;
-	switch(size) {
-		case I2C_SMBUS_BYTE_DATA:
-			buf[0] = (addr << 1) | 1;
-			cpec = i2c_smbus_pec(2, buf, NULL);
-			rpec = data->byte;
-			break;
-		case I2C_SMBUS_WORD_DATA:
-			buf[0] = (addr << 1) | 1;
-			buf[2] = data->word & 0xff;
-			cpec = i2c_smbus_pec(3, buf, NULL);
-			rpec = data->word >> 8;
-			break;
-		case I2C_SMBUS_WORD_DATA_PEC:
-			/* unsupported */
-			cpec = rpec = 0;
-			break;
-		case I2C_SMBUS_PROC_CALL_PEC:
-			/* unsupported */
-			cpec = rpec = 0;
-			break;
-		case I2C_SMBUS_BLOCK_DATA_PEC:
-			buf[0] = (addr << 1);
-			buf[2] = (addr << 1) | 1;
-			cpec = i2c_smbus_pec(3, buf, data->block);
-			rpec = data->block[data->block[0] + 1];
-			break;
-		case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
-			buf[0] = (addr << 1) | 1;
-			rpec = i2c_smbus_partial_pec(partial, 1,
-			                             buf, data->block);
-			cpec = data->block[data->block[0] + 1];
-			break;
-		default:
-			cpec = rpec = 0;
-			break;
-	}
 	if (rpec != cpec) {
 		pr_debug("i2c-core: Bad PEC 0x%02x vs. 0x%02x\n",
 			rpec, cpec);
@@ -941,9 +895,8 @@ s32 i2c_smbus_read_byte(struct i2c_client *client)
 
 s32 i2c_smbus_write_byte(struct i2c_client *client, u8 value)
 {
-	union i2c_smbus_data data;	/* only for PEC */
 	return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
-	                      I2C_SMBUS_WRITE,value, I2C_SMBUS_BYTE,&data);
+	                      I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL);
 }
 
 s32 i2c_smbus_read_byte_data(struct i2c_client *client, u8 command)
@@ -1026,13 +979,14 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 	  need to use only one message; when reading, we need two. We initialize
 	  most things with sane defaults, to keep the code below somewhat
 	  simpler. */
-	unsigned char msgbuf0[34];
-	unsigned char msgbuf1[34];
+	unsigned char msgbuf0[I2C_SMBUS_BLOCK_MAX+3];
+	unsigned char msgbuf1[I2C_SMBUS_BLOCK_MAX+2];
 	int num = read_write == I2C_SMBUS_READ?2:1;
 	struct i2c_msg msg[2] = { { addr, flags, 1, msgbuf0 }, 
 	                          { addr, flags | I2C_M_RD, 0, msgbuf1 }
 	                        };
 	int i;
+	u8 partial_pec = 0;
 
 	msgbuf0[0] = command;
 	switch(size) {
@@ -1075,7 +1029,6 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 		msgbuf0[2] = (data->word >> 8) & 0xff;
 		break;
 	case I2C_SMBUS_BLOCK_DATA:
-	case I2C_SMBUS_BLOCK_DATA_PEC:
 		if (read_write == I2C_SMBUS_READ) {
 			dev_err(&adapter->dev, "Block read not supported "
 			       "under I2C emulation!\n");
@@ -1088,23 +1041,20 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 				       data->block[0]);
 				return -1;
 			}
-			if(size == I2C_SMBUS_BLOCK_DATA_PEC)
-				(msg[0].len)++;
-			for (i = 1; i <= msg[0].len; i++)
+			for (i = 1; i < msg[0].len; i++)
 				msgbuf0[i] = data->block[i-1];
 		}
 		break;
 	case I2C_SMBUS_BLOCK_PROC_CALL:
-	case I2C_SMBUS_BLOCK_PROC_CALL_PEC:
 		dev_dbg(&adapter->dev, "Block process call not supported "
 		       "under I2C emulation!\n");
 		return -1;
 	case I2C_SMBUS_I2C_BLOCK_DATA:
 		if (read_write == I2C_SMBUS_READ) {
-			msg[1].len = I2C_SMBUS_I2C_BLOCK_MAX;
+			msg[1].len = I2C_SMBUS_BLOCK_MAX;
 		} else {
 			msg[0].len = data->block[0] + 1;
-			if (msg[0].len > I2C_SMBUS_I2C_BLOCK_MAX + 1) {
+			if (msg[0].len > I2C_SMBUS_BLOCK_MAX + 1) {
 				dev_err(&adapter->dev, "i2c_smbus_xfer_emulated called with "
 				       "invalid block write size (%d)\n",
 				       data->block[0]);
@@ -1120,9 +1070,30 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 		return -1;
 	}
 
+	i = ((flags & I2C_CLIENT_PEC) && size != I2C_SMBUS_QUICK
+				      && size != I2C_SMBUS_I2C_BLOCK_DATA);
+	if (i) {
+		/* Compute PEC if first message is a write */
+		if (!(msg[0].flags & I2C_M_RD)) {
+		 	if (num == 1) /* Write only */
+				i2c_smbus_add_pec(&msg[0]);
+			else /* Write followed by read */
+				partial_pec = i2c_smbus_msg_pec(0, &msg[0]);
+		}
+		/* Ask for PEC if last message is a read */
+		if (msg[num-1].flags & I2C_M_RD)
+		 	msg[num-1].len++;
+	}
+
 	if (i2c_transfer(adapter, msg, num) < 0)
 		return -1;
 
+	/* Check PEC if last message is a read */
+	if (i && (msg[num-1].flags & I2C_M_RD)) {
+		if (i2c_smbus_check_pec(partial_pec, &msg[num-1]) < 0)
+			return -1;
+	}
+
 	if (read_write == I2C_SMBUS_READ)
 		switch(size) {
 			case I2C_SMBUS_BYTE:
@@ -1137,8 +1108,8 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
 				break;
 			case I2C_SMBUS_I2C_BLOCK_DATA:
 				/* fixed at 32 for now */
-				data->block[0] = I2C_SMBUS_I2C_BLOCK_MAX;
-				for (i = 0; i < I2C_SMBUS_I2C_BLOCK_MAX; i++)
+				data->block[0] = I2C_SMBUS_BLOCK_MAX;
+				for (i = 0; i < I2C_SMBUS_BLOCK_MAX; i++)
 					data->block[i+1] = msgbuf1[i];
 				break;
 		}
@@ -1151,28 +1122,8 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags,
                    union i2c_smbus_data * data)
 {
 	s32 res;
-	int swpec = 0;
-	u8 partial = 0;
 
 	flags &= I2C_M_TEN | I2C_CLIENT_PEC;
-	if((flags & I2C_CLIENT_PEC) &&
-	   !(i2c_check_functionality(adapter, I2C_FUNC_SMBUS_HWPEC_CALC))) {
-		swpec = 1;
-		if(read_write == I2C_SMBUS_READ &&
-		   size == I2C_SMBUS_BLOCK_DATA)
-			size = I2C_SMBUS_BLOCK_DATA_PEC;
-		else if(size == I2C_SMBUS_PROC_CALL)
-			size = I2C_SMBUS_PROC_CALL_PEC;
-		else if(size == I2C_SMBUS_BLOCK_PROC_CALL) {
-			i2c_smbus_add_pec(addr, command,
-		                          I2C_SMBUS_BLOCK_DATA, data);
-			partial = data->block[data->block[0] + 1];
-			size = I2C_SMBUS_BLOCK_PROC_CALL_PEC;
-		} else if(read_write == I2C_SMBUS_WRITE &&
-		          size != I2C_SMBUS_QUICK &&
-		          size != I2C_SMBUS_I2C_BLOCK_DATA)
-			size = i2c_smbus_add_pec(addr, command, size, data);
-	}
 
 	if (adapter->algo->smbus_xfer) {
 		down(&adapter->bus_lock);
@@ -1183,13 +1134,6 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags,
 		res = i2c_smbus_xfer_emulated(adapter,addr,flags,read_write,
 	                                      command,size,data);
 
-	if(res >= 0 && swpec &&
-	   size != I2C_SMBUS_QUICK && size != I2C_SMBUS_I2C_BLOCK_DATA &&
-	   (read_write == I2C_SMBUS_READ || size == I2C_SMBUS_PROC_CALL_PEC ||
-	    size == I2C_SMBUS_BLOCK_PROC_CALL_PEC)) {
-		if(i2c_smbus_check_pec(addr, command, size, partial, data))
-			return -1;
-	}
 	return res;
 }
 

drivers/i2c/i2c-dev.c

@@ -26,15 +26,11 @@
 
 /* The I2C_RDWR ioctl code is written by Kolja Waschk <waschk@telos.de> */
 
-/* The devfs code is contributed by Philipp Matthias Hahn 
-   <pmhahn@titan.lahn.de> */
-
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/slab.h>
 #include <linux/smp_lock.h>
-#include <linux/devfs_fs_kernel.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
 #include <linux/i2c-dev.h>
@@ -80,10 +76,9 @@ static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap)
 {
 	struct i2c_dev *i2c_dev;
 
-	i2c_dev = kmalloc(sizeof(*i2c_dev), GFP_KERNEL);
+	i2c_dev = kzalloc(sizeof(*i2c_dev), GFP_KERNEL);
 	if (!i2c_dev)
 		return ERR_PTR(-ENOMEM);
-	memset(i2c_dev, 0x00, sizeof(*i2c_dev));
 
 	spin_lock(&i2c_dev_array_lock);
 	if (i2c_dev_array[adap->nr]) {
@@ -177,8 +172,8 @@ static int i2cdev_ioctl(struct inode *inode, struct file *file,
 	int i,datasize,res;
 	unsigned long funcs;
 
-	dev_dbg(&client->adapter->dev, "i2c-%d ioctl, cmd: 0x%x, arg: %lx.\n",
-		iminor(inode),cmd, arg);
+	dev_dbg(&client->adapter->dev, "ioctl, cmd=0x%02x, arg=0x%02lx\n",
+		cmd, arg);
 
 	switch ( cmd ) {
 	case I2C_SLAVE:
@@ -432,8 +427,6 @@ static int i2cdev_attach_adapter(struct i2c_adapter *adap)
 	if (IS_ERR(i2c_dev))
 		return PTR_ERR(i2c_dev);
 
-	devfs_mk_cdev(MKDEV(I2C_MAJOR, i2c_dev->minor),
-			S_IFCHR|S_IRUSR|S_IWUSR, "i2c/%d", i2c_dev->minor);
 	pr_debug("i2c-dev: adapter [%s] registered as minor %d\n",
 		 adap->name, i2c_dev->minor);
 
@@ -466,7 +459,6 @@ static int i2cdev_detach_adapter(struct i2c_adapter *adap)
 		return -ENODEV;
 
 	init_completion(&i2c_dev->released);
-	devfs_remove("i2c/%d", i2c_dev->minor);
 	return_i2c_dev(i2c_dev);
 	class_device_unregister(&i2c_dev->class_dev);
 	wait_for_completion(&i2c_dev->released);
@@ -522,8 +514,6 @@ static int __init i2c_dev_init(void)
 	if (res)
 		goto out_unreg_class;
 
-	devfs_mk_dir("i2c");
-
 	return 0;
 
 out_unreg_class:
@@ -539,7 +529,6 @@ static void __exit i2c_dev_exit(void)
 {
 	i2c_del_driver(&i2cdev_driver);
 	class_unregister(&i2c_dev_class);
-	devfs_remove("i2c");
 	unregister_chrdev(I2C_MAJOR,"i2c");
 }
 

include/linux/i2c-algo-bit.h

@@ -21,8 +21,6 @@
 /* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
    Frodo Looijaard <frodol@dds.nl> */
 
-/* $Id: i2c-algo-bit.h,v 1.10 2003/01/21 08:08:16 kmalkki Exp $ */
-
 #ifndef _LINUX_I2C_ALGO_BIT_H
 #define _LINUX_I2C_ALGO_BIT_H
 
@@ -46,8 +44,6 @@ struct i2c_algo_bit_data {
 	int timeout;		/* in jiffies */
 };
 
-#define I2C_BIT_ADAP_MAX	16
-
 int i2c_bit_add_bus(struct i2c_adapter *);
 int i2c_bit_del_bus(struct i2c_adapter *);
 

include/linux/i2c-algo-pca.h

@@ -9,8 +9,6 @@ struct i2c_algo_pca_data {
 	int  (*wait_for_interrupt)	(struct i2c_algo_pca_data *adap);
 };
 
-#define I2C_PCA_ADAP_MAX	16
-
 int i2c_pca_add_bus(struct i2c_adapter *);
 int i2c_pca_del_bus(struct i2c_adapter *);