Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (23 commits)
  ACPI PCI hotplug: harden against panic regression
  ACPI: rename main.c to sleep.c
  dell-laptop: move to drivers/platform/x86/ from drivers/misc/
  eeepc-laptop: enable Bluetooth ACPI details
  ACPI: fix ACPI_FADT_S4_RTC_WAKE comment
  kprobes: check CONFIG_FREEZER instead of CONFIG_PM
  PM: Fix freezer compilation if PM_SLEEP is unset
  thermal fixup for broken BIOS which has invalid trip points.
  ACPI: EC: Don't trust ECDT tables from ASUS
  ACPI: EC: Limit workaround for ASUS notebooks even more
  ACPI: thinkpad-acpi: bump up version to 0.22
  ACPI: thinkpad-acpi: handle HKEY event 6030
  ACPI: thinkpad-acpi: clean-up fan subdriver quirk
  ACPI: thinkpad-acpi: start the event hunt season
  ACPI: thinkpad-acpi: handle HKEY thermal and battery alarms
  ACPI: thinkpad-acpi: clean up hotkey_notify()
  ACPI: thinkpad-acpi: use killable instead of interruptible mutexes
  ACPI: thinkpad-acpi: add UWB radio support
  ACPI: thinkpad-acpi: preserve radio state across shutdown
  ACPI: thinkpad-acpi: resume with radios disabled
  ...

Documentation/laptops/thinkpad-acpi.txt

@@ -1,7 +1,7 @@
 		     ThinkPad ACPI Extras Driver
 
-                            Version 0.21
-                           May 29th, 2008
+                            Version 0.22
+                        November 23rd,  2008
 
                Borislav Deianov <borislav@users.sf.net>
              Henrique de Moraes Holschuh <hmh@hmh.eng.br>
@@ -16,7 +16,8 @@ supported by the generic Linux ACPI drivers.
 This driver used to be named ibm-acpi until kernel 2.6.21 and release
 0.13-20070314.  It used to be in the drivers/acpi tree, but it was
 moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
-2.6.22, and release 0.14.
+2.6.22, and release 0.14.  It was moved to drivers/platform/x86 for
+kernel 2.6.29 and release 0.22.
 
 The driver is named "thinkpad-acpi".  In some places, like module
 names, "thinkpad_acpi" is used because of userspace issues.
@@ -1412,6 +1413,24 @@ Sysfs notes:
 	rfkill controller switch "tpacpi_wwan_sw": refer to
 	Documentation/rfkill.txt for details.
 
+EXPERIMENTAL: UWB
+-----------------
+
+This feature is marked EXPERIMENTAL because it has not been extensively
+tested and validated in various ThinkPad models yet.  The feature may not
+work as expected. USE WITH CAUTION! To use this feature, you need to supply
+the experimental=1 parameter when loading the module.
+
+sysfs rfkill class: switch "tpacpi_uwb_sw"
+
+This feature exports an rfkill controller for the UWB device, if one is
+present and enabled in the BIOS.
+
+Sysfs notes:
+
+	rfkill controller switch "tpacpi_uwb_sw": refer to
+	Documentation/rfkill.txt for details.
+
 Multiple Commands, Module Parameters
 ------------------------------------
 

arch/ia64/kernel/kprobes.c

@@ -870,7 +870,7 @@ static int __kprobes pre_kprobes_handler(struct die_args *args)
 		return 1;
 
 ss_probe:
-#if !defined(CONFIG_PREEMPT) || defined(CONFIG_PM)
+#if !defined(CONFIG_PREEMPT) || defined(CONFIG_FREEZER)
 	if (p->ainsn.inst_flag == INST_FLAG_BOOSTABLE && !p->post_handler) {
 		/* Boost up -- we can execute copied instructions directly */
 		ia64_psr(regs)->ri = p->ainsn.slot;

arch/x86/kernel/kprobes.c

@@ -446,7 +446,7 @@ void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
 static void __kprobes setup_singlestep(struct kprobe *p, struct pt_regs *regs,
 				       struct kprobe_ctlblk *kcb)
 {
-#if !defined(CONFIG_PREEMPT) || defined(CONFIG_PM)
+#if !defined(CONFIG_PREEMPT) || defined(CONFIG_FREEZER)
 	if (p->ainsn.boostable == 1 && !p->post_handler) {
 		/* Boost up -- we can execute copied instructions directly */
 		reset_current_kprobe();

drivers/acpi/Makefile

@@ -19,7 +19,7 @@ obj-y				+= osl.o utils.o reboot.o\
 
 # sleep related files
 obj-y				+= wakeup.o
-obj-y				+= main.o
+obj-y				+= sleep.o
 obj-$(CONFIG_ACPI_SLEEP)	+= proc.o
 
 

drivers/acpi/ec.c

@@ -120,31 +120,6 @@ static struct acpi_ec {
 	spinlock_t curr_lock;
 } *boot_ec, *first_ec;
 
-/* 
- * Some Asus system have exchanged ECDT data/command IO addresses.
- */
-static int print_ecdt_error(const struct dmi_system_id *id)
-{
-	printk(KERN_NOTICE PREFIX "%s detected - "
-		"ECDT has exchanged control/data I/O address\n",
-		id->ident);
-	return 0;
-}
-
-static struct dmi_system_id __cpuinitdata ec_dmi_table[] = {
-	{
-	print_ecdt_error, "Asus L4R", {
-	DMI_MATCH(DMI_BIOS_VERSION, "1008.006"),
-	DMI_MATCH(DMI_PRODUCT_NAME, "L4R"),
-	DMI_MATCH(DMI_BOARD_NAME, "L4R") }, NULL},
-	{
-	print_ecdt_error, "Asus M6R", {
-	DMI_MATCH(DMI_BIOS_VERSION, "0207"),
-	DMI_MATCH(DMI_PRODUCT_NAME, "M6R"),
-	DMI_MATCH(DMI_BOARD_NAME, "M6R") }, NULL},
-	{},
-};
-
 /* --------------------------------------------------------------------------
                              Transaction Management
    -------------------------------------------------------------------------- */
@@ -983,8 +958,8 @@ static const struct acpi_device_id ec_device_ids[] = {
 int __init acpi_ec_ecdt_probe(void)
 {
 	acpi_status status;
+	struct acpi_ec *saved_ec = NULL;
 	struct acpi_table_ecdt *ecdt_ptr;
-	acpi_handle dummy;
 
 	boot_ec = make_acpi_ec();
 	if (!boot_ec)
@@ -998,21 +973,16 @@ int __init acpi_ec_ecdt_probe(void)
 		pr_info(PREFIX "EC description table is found, configuring boot EC\n");
 		boot_ec->command_addr = ecdt_ptr->control.address;
 		boot_ec->data_addr = ecdt_ptr->data.address;
-		if (dmi_check_system(ec_dmi_table)) {
-			/*
-			 * If the board falls into ec_dmi_table, it means
-			 * that ECDT table gives the incorrect command/status
-			 * & data I/O address. Just fix it.
-			 */
-			boot_ec->data_addr = ecdt_ptr->control.address;
-			boot_ec->command_addr = ecdt_ptr->data.address;
-		}
 		boot_ec->gpe = ecdt_ptr->gpe;
 		boot_ec->handle = ACPI_ROOT_OBJECT;
 		acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle);
-		/* Add some basic check against completely broken table */
-		if (boot_ec->data_addr != boot_ec->command_addr)
+		/* Don't trust ECDT, which comes from ASUSTek */
+		if (!dmi_name_in_vendors("ASUS"))
 			goto install;
+		saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
+		if (!saved_ec)
+			return -ENOMEM;
+		memcpy(&saved_ec, boot_ec, sizeof(saved_ec));
 	/* fall through */
 	}
 	/* This workaround is needed only on some broken machines,
@@ -1023,12 +993,29 @@ int __init acpi_ec_ecdt_probe(void)
 	/* Check that acpi_get_devices actually find something */
 	if (ACPI_FAILURE(status) || !boot_ec->handle)
 		goto error;
-	/* We really need to limit this workaround, the only ASUS,
-	 * which needs it, has fake EC._INI method, so use it as flag.
-	 * Keep boot_ec struct as it will be needed soon.
-	 */
-	if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &dummy)))
-		return -ENODEV;
+	if (saved_ec) {
+		/* try to find good ECDT from ASUSTek */
+		if (saved_ec->command_addr != boot_ec->command_addr ||
+		    saved_ec->data_addr != boot_ec->data_addr ||
+		    saved_ec->gpe != boot_ec->gpe ||
+		    saved_ec->handle != boot_ec->handle)
+			pr_info(PREFIX "ASUSTek keeps feeding us with broken "
+			"ECDT tables, which are very hard to workaround. "
+			"Trying to use DSDT EC info instead. Please send "
+			"output of acpidump to linux-acpi@vger.kernel.org\n");
+		kfree(saved_ec);
+		saved_ec = NULL;
+	} else {
+		/* We really need to limit this workaround, the only ASUS,
+		* which needs it, has fake EC._INI method, so use it as flag.
+		* Keep boot_ec struct as it will be needed soon.
+		*/
+		acpi_handle dummy;
+		if (!dmi_name_in_vendors("ASUS") ||
+		    ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI",
+							&dummy)))
+			return -ENODEV;
+	}
 install:
 	if (!ec_install_handlers(boot_ec)) {
 		first_ec = boot_ec;

drivers/acpi/thermal.c

@@ -416,7 +416,8 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 	}
 
 	/* Passive (optional) */
-	if (flag & ACPI_TRIPS_PASSIVE) {
+	if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.flags.valid) ||
+		(flag == ACPI_TRIPS_INIT)) {
 		valid = tz->trips.passive.flags.valid;
 		if (psv == -1) {
 			status = AE_SUPPORT;
@@ -462,8 +463,11 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 		memset(&devices, 0, sizeof(struct acpi_handle_list));
 		status = acpi_evaluate_reference(tz->device->handle, "_PSL",
 							NULL, &devices);
-		if (ACPI_FAILURE(status))
+		if (ACPI_FAILURE(status)) {
+			printk(KERN_WARNING PREFIX
+				"Invalid passive threshold\n");
 			tz->trips.passive.flags.valid = 0;
+		}
 		else
 			tz->trips.passive.flags.valid = 1;
 
@@ -487,7 +491,8 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 		if (act == -1)
 			break; /* disable all active trip points */
 
-		if (flag & ACPI_TRIPS_ACTIVE) {
+		if ((flag == ACPI_TRIPS_INIT) || ((flag & ACPI_TRIPS_ACTIVE) &&
+			tz->trips.active[i].flags.valid)) {
 			status = acpi_evaluate_integer(tz->device->handle,
 							name, NULL, &tmp);
 			if (ACPI_FAILURE(status)) {
@@ -521,8 +526,11 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 			memset(&devices, 0, sizeof(struct acpi_handle_list));
 			status = acpi_evaluate_reference(tz->device->handle,
 						name, NULL, &devices);
-			if (ACPI_FAILURE(status))
+			if (ACPI_FAILURE(status)) {
+				printk(KERN_WARNING PREFIX
+					"Invalid active%d threshold\n", i);
 				tz->trips.active[i].flags.valid = 0;
+			}
 			else
 				tz->trips.active[i].flags.valid = 1;
 

drivers/misc/Makefile

@@ -10,7 +10,6 @@ obj-$(CONFIG_ATMEL_TCLIB)	+= atmel_tclib.o
 obj-$(CONFIG_ICS932S401)	+= ics932s401.o
 obj-$(CONFIG_LKDTM)		+= lkdtm.o
 obj-$(CONFIG_TIFM_CORE)       	+= tifm_core.o
-obj-$(CONFIG_DELL_LAPTOP)	+= dell-laptop.o
 obj-$(CONFIG_TIFM_7XX1)       	+= tifm_7xx1.o
 obj-$(CONFIG_PHANTOM)		+= phantom.o
 obj-$(CONFIG_SGI_IOC4)		+= ioc4.o

drivers/pci/hotplug/acpiphp_glue.c

@@ -266,6 +266,8 @@ static int detect_ejectable_slots(struct pci_bus *pbus)
 	int found = acpi_pci_detect_ejectable(pbus);
 	if (!found) {
 		acpi_handle bridge_handle = acpi_pci_get_bridge_handle(pbus);
+		if (!bridge_handle)
+			return 0;
 		acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge_handle, (u32)1,
 				    is_pci_dock_device, (void *)&found, NULL);
 	}

drivers/platform/x86/Kconfig

@@ -54,6 +54,18 @@ config ASUS_LAPTOP
 
 	  If you have an ACPI-compatible ASUS laptop, say Y or M here.
 
+config DELL_LAPTOP
+	tristate "Dell Laptop Extras (EXPERIMENTAL)"
+	depends on X86
+	depends on DCDBAS
+	depends on EXPERIMENTAL
+	depends on BACKLIGHT_CLASS_DEVICE
+	depends on RFKILL
+	default n
+	---help---
+	This driver adds support for rfkill and backlight control to Dell
+	laptops.
+
 config FUJITSU_LAPTOP
 	tristate "Fujitsu Laptop Extras"
 	depends on ACPI
@@ -192,6 +204,17 @@ config THINKPAD_ACPI
 
 	  If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
 
+config THINKPAD_ACPI_DEBUGFACILITIES
+	bool "Maintainer debug facilities"
+	depends on THINKPAD_ACPI
+	default n
+	---help---
+	  Enables extra stuff in the thinkpad-acpi which is completely useless
+	  for normal use.  Read the driver source to find out what it does.
+
+	  Say N here, unless you were told by a kernel maintainer to do
+	  otherwise.
+
 config THINKPAD_ACPI_DEBUG
 	bool "Verbose debug mode"
 	depends on THINKPAD_ACPI

drivers/platform/x86/Makefile

@@ -6,6 +6,7 @@ obj-$(CONFIG_ASUS_LAPTOP)	+= asus-laptop.o
 obj-$(CONFIG_EEEPC_LAPTOP)	+= eeepc-laptop.o
 obj-$(CONFIG_MSI_LAPTOP)	+= msi-laptop.o
 obj-$(CONFIG_COMPAL_LAPTOP)	+= compal-laptop.o
+obj-$(CONFIG_DELL_LAPTOP)	+= dell-laptop.o
 obj-$(CONFIG_ACER_WMI)		+= acer-wmi.o
 obj-$(CONFIG_HP_WMI)		+= hp-wmi.o
 obj-$(CONFIG_TC1100_WMI)	+= tc1100-wmi.o

drivers/misc/dell-laptop.c → drivers/platform/x86/dell-laptop.c

@@ -22,7 +22,7 @@
 #include <linux/rfkill.h>
 #include <linux/power_supply.h>
 #include <linux/acpi.h>
-#include "../firmware/dcdbas.h"
+#include "../../firmware/dcdbas.h"
 
 #define BRIGHTNESS_TOKEN 0x7d
 

drivers/platform/x86/eeepc-laptop.c

@@ -90,7 +90,7 @@ enum {
 };
 
 static const char *cm_getv[] = {
-	"WLDG", NULL, NULL, NULL,
+	"WLDG", "BTHG", NULL, NULL,
 	"CAMG", NULL, NULL, NULL,
 	NULL, "PBLG", NULL, NULL,
 	"CFVG", NULL, NULL, NULL,
@@ -99,7 +99,7 @@ static const char *cm_getv[] = {
 };
 
 static const char *cm_setv[] = {
-	"WLDS", NULL, NULL, NULL,
+	"WLDS", "BTHS", NULL, NULL,
 	"CAMS", NULL, NULL, NULL,
 	"SDSP", "PBLS", "HDPS", NULL,
 	"CFVS", NULL, NULL, NULL,

include/acpi/actbl.h

@@ -245,7 +245,7 @@ struct acpi_table_fadt {
 #define ACPI_FADT_POWER_BUTTON      (1<<4)	/* 04: Power button is handled as a generic feature */
 #define ACPI_FADT_SLEEP_BUTTON      (1<<5)	/* 05: Sleep button is handled as a generic feature, or  not present */
 #define ACPI_FADT_FIXED_RTC         (1<<6)	/* 06: RTC wakeup stat not in fixed register space */
-#define ACPI_FADT_S4_RTC_WAKE       (1<<7)	/* 07: RTC wakeup stat not possible from S4 */
+#define ACPI_FADT_S4_RTC_WAKE       (1<<7)	/* 07: RTC wakeup possible from S4 */
 #define ACPI_FADT_32BIT_TIMER       (1<<8)	/* 08: tmr_val is 32 bits 0=24-bits */
 #define ACPI_FADT_DOCKING_SUPPORTED (1<<9)	/* 09: Docking supported */
 #define ACPI_FADT_RESET_REGISTER    (1<<10)	/* 10: System reset via the FADT RESET_REG supported */

kernel/kprobes.c

@@ -123,7 +123,7 @@ static int collect_garbage_slots(void);
 static int __kprobes check_safety(void)
 {
 	int ret = 0;
-#if defined(CONFIG_PREEMPT) && defined(CONFIG_PM)
+#if defined(CONFIG_PREEMPT) && defined(CONFIG_FREEZER)
 	ret = freeze_processes();
 	if (ret == 0) {
 		struct task_struct *p, *q;

kernel/power/Makefile

@@ -4,7 +4,8 @@ EXTRA_CFLAGS	+=	-DDEBUG
 endif
 
 obj-y				:= main.o
-obj-$(CONFIG_PM_SLEEP)		+= process.o console.o
+obj-$(CONFIG_PM_SLEEP)		+= console.o
+obj-$(CONFIG_FREEZER)		+= process.o
 obj-$(CONFIG_HIBERNATION)	+= swsusp.o disk.o snapshot.o swap.o user.o
 
 obj-$(CONFIG_MAGIC_SYSRQ)	+= poweroff.o