Merge branch 'perf/urgent' into perf/core

Conflicts:
	arch/x86/kernel/cpu/perf_event.c

Merge reason: Resolve the conflict, pick up fixes

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Documentation/cgroups/memory.txt

@@ -340,7 +340,7 @@ Note:
 5.3 swappiness
   Similar to /proc/sys/vm/swappiness, but affecting a hierarchy of groups only.
 
-  Following cgroups' swapiness can't be changed.
+  Following cgroups' swappiness can't be changed.
   - root cgroup (uses /proc/sys/vm/swappiness).
   - a cgroup which uses hierarchy and it has child cgroup.
   - a cgroup which uses hierarchy and not the root of hierarchy.

Documentation/circular-buffers.txt

@@ -0,0 +1,234 @@
+			       ================
+			       CIRCULAR BUFFERS
+			       ================
+
+By: David Howells <dhowells@redhat.com>
+    Paul E. McKenney <paulmck@linux.vnet.ibm.com>
+
+
+Linux provides a number of features that can be used to implement circular
+buffering.  There are two sets of such features:
+
+ (1) Convenience functions for determining information about power-of-2 sized
+     buffers.
+
+ (2) Memory barriers for when the producer and the consumer of objects in the
+     buffer don't want to share a lock.
+
+To use these facilities, as discussed below, there needs to be just one
+producer and just one consumer.  It is possible to handle multiple producers by
+serialising them, and to handle multiple consumers by serialising them.
+
+
+Contents:
+
+ (*) What is a circular buffer?
+
+ (*) Measuring power-of-2 buffers.
+
+ (*) Using memory barriers with circular buffers.
+     - The producer.
+     - The consumer.
+
+
+==========================
+WHAT IS A CIRCULAR BUFFER?
+==========================
+
+First of all, what is a circular buffer?  A circular buffer is a buffer of
+fixed, finite size into which there are two indices:
+
+ (1) A 'head' index - the point at which the producer inserts items into the
+     buffer.
+
+ (2) A 'tail' index - the point at which the consumer finds the next item in
+     the buffer.
+
+Typically when the tail pointer is equal to the head pointer, the buffer is
+empty; and the buffer is full when the head pointer is one less than the tail
+pointer.
+
+The head index is incremented when items are added, and the tail index when
+items are removed.  The tail index should never jump the head index, and both
+indices should be wrapped to 0 when they reach the end of the buffer, thus
+allowing an infinite amount of data to flow through the buffer.
+
+Typically, items will all be of the same unit size, but this isn't strictly
+required to use the techniques below.  The indices can be increased by more
+than 1 if multiple items or variable-sized items are to be included in the
+buffer, provided that neither index overtakes the other.  The implementer must
+be careful, however, as a region more than one unit in size may wrap the end of
+the buffer and be broken into two segments.
+
+
+============================
+MEASURING POWER-OF-2 BUFFERS
+============================
+
+Calculation of the occupancy or the remaining capacity of an arbitrarily sized
+circular buffer would normally be a slow operation, requiring the use of a
+modulus (divide) instruction.  However, if the buffer is of a power-of-2 size,
+then a much quicker bitwise-AND instruction can be used instead.
+
+Linux provides a set of macros for handling power-of-2 circular buffers.  These
+can be made use of by:
+
+	#include <linux/circ_buf.h>
+
+The macros are:
+
+ (*) Measure the remaining capacity of a buffer:
+
+	CIRC_SPACE(head_index, tail_index, buffer_size);
+
+     This returns the amount of space left in the buffer[1] into which items
+     can be inserted.
+
+
+ (*) Measure the maximum consecutive immediate space in a buffer:
+
+	CIRC_SPACE_TO_END(head_index, tail_index, buffer_size);
+
+     This returns the amount of consecutive space left in the buffer[1] into
+     which items can be immediately inserted without having to wrap back to the
+     beginning of the buffer.
+
+
+ (*) Measure the occupancy of a buffer:
+
+	CIRC_CNT(head_index, tail_index, buffer_size);
+
+     This returns the number of items currently occupying a buffer[2].
+
+
+ (*) Measure the non-wrapping occupancy of a buffer:
+
+	CIRC_CNT_TO_END(head_index, tail_index, buffer_size);
+
+     This returns the number of consecutive items[2] that can be extracted from
+     the buffer without having to wrap back to the beginning of the buffer.
+
+
+Each of these macros will nominally return a value between 0 and buffer_size-1,
+however:
+
+ [1] CIRC_SPACE*() are intended to be used in the producer.  To the producer
+     they will return a lower bound as the producer controls the head index,
+     but the consumer may still be depleting the buffer on another CPU and
+     moving the tail index.
+
+     To the consumer it will show an upper bound as the producer may be busy
+     depleting the space.
+
+ [2] CIRC_CNT*() are intended to be used in the consumer.  To the consumer they
+     will return a lower bound as the consumer controls the tail index, but the
+     producer may still be filling the buffer on another CPU and moving the
+     head index.
+
+     To the producer it will show an upper bound as the consumer may be busy
+     emptying the buffer.
+
+ [3] To a third party, the order in which the writes to the indices by the
+     producer and consumer become visible cannot be guaranteed as they are
+     independent and may be made on different CPUs - so the result in such a
+     situation will merely be a guess, and may even be negative.
+
+
+===========================================
+USING MEMORY BARRIERS WITH CIRCULAR BUFFERS
+===========================================
+
+By using memory barriers in conjunction with circular buffers, you can avoid
+the need to:
+
+ (1) use a single lock to govern access to both ends of the buffer, thus
+     allowing the buffer to be filled and emptied at the same time; and
+
+ (2) use atomic counter operations.
+
+There are two sides to this: the producer that fills the buffer, and the
+consumer that empties it.  Only one thing should be filling a buffer at any one
+time, and only one thing should be emptying a buffer at any one time, but the
+two sides can operate simultaneously.
+
+
+THE PRODUCER
+------------
+
+The producer will look something like this:
+
+	spin_lock(&producer_lock);
+
+	unsigned long head = buffer->head;
+	unsigned long tail = ACCESS_ONCE(buffer->tail);
+
+	if (CIRC_SPACE(head, tail, buffer->size) >= 1) {
+		/* insert one item into the buffer */
+		struct item *item = buffer[head];
+
+		produce_item(item);
+
+		smp_wmb(); /* commit the item before incrementing the head */
+
+		buffer->head = (head + 1) & (buffer->size - 1);
+
+		/* wake_up() will make sure that the head is committed before
+		 * waking anyone up */
+		wake_up(consumer);
+	}
+
+	spin_unlock(&producer_lock);
+
+This will instruct the CPU that the contents of the new item must be written
+before the head index makes it available to the consumer and then instructs the
+CPU that the revised head index must be written before the consumer is woken.
+
+Note that wake_up() doesn't have to be the exact mechanism used, but whatever
+is used must guarantee a (write) memory barrier between the update of the head
+index and the change of state of the consumer, if a change of state occurs.
+
+
+THE CONSUMER
+------------
+
+The consumer will look something like this:
+
+	spin_lock(&consumer_lock);
+
+	unsigned long head = ACCESS_ONCE(buffer->head);
+	unsigned long tail = buffer->tail;
+
+	if (CIRC_CNT(head, tail, buffer->size) >= 1) {
+		/* read index before reading contents at that index */
+		smp_read_barrier_depends();
+
+		/* extract one item from the buffer */
+		struct item *item = buffer[tail];
+
+		consume_item(item);
+
+		smp_mb(); /* finish reading descriptor before incrementing tail */
+
+		buffer->tail = (tail + 1) & (buffer->size - 1);
+	}
+
+	spin_unlock(&consumer_lock);
+
+This will instruct the CPU to make sure the index is up to date before reading
+the new item, and then it shall make sure the CPU has finished reading the item
+before it writes the new tail pointer, which will erase the item.
+
+
+Note the use of ACCESS_ONCE() in both algorithms to read the opposition index.
+This prevents the compiler from discarding and reloading its cached value -
+which some compilers will do across smp_read_barrier_depends().  This isn't
+strictly needed if you can be sure that the opposition index will _only_ be
+used the once.
+
+
+===============
+FURTHER READING
+===============
+
+See also Documentation/memory-barriers.txt for a description of Linux's memory
+barrier facilities.

Documentation/filesystems/00-INDEX

@@ -16,6 +16,8 @@ befs.txt
 	- information about the BeOS filesystem for Linux.
 bfs.txt
 	- info for the SCO UnixWare Boot Filesystem (BFS).
+ceph.txt
+	- info for the Ceph Distributed File System
 cifs.txt
 	- description of the CIFS filesystem.
 coda.txt

Documentation/filesystems/ceph.txt

@@ -8,7 +8,7 @@ Basic features include:
 
  * POSIX semantics
  * Seamless scaling from 1 to many thousands of nodes
- * High availability and reliability.  No single points of failure.
+ * High availability and reliability.  No single point of failure.
  * N-way replication of data across storage nodes
  * Fast recovery from node failures
  * Automatic rebalancing of data on node addition/removal
@@ -94,7 +94,7 @@ Mount Options
 
   wsize=X
 	Specify the maximum write size in bytes.  By default there is no
-	maximu.  Ceph will normally size writes based on the file stripe
+	maximum.  Ceph will normally size writes based on the file stripe
 	size.
 
   rsize=X
@@ -115,7 +115,7 @@ Mount Options
 	number of entries in that directory.
 
   nocrc
-	Disable CRC32C calculation for data writes.  If set, the OSD
+	Disable CRC32C calculation for data writes.  If set, the storage node
 	must rely on TCP's error correction to detect data corruption
 	in the data payload.
 
@@ -133,7 +133,8 @@ For more information on Ceph, see the home page at
 	http://ceph.newdream.net/
 
 The Linux kernel client source tree is available at
-	git://ceph.newdream.net/linux-ceph-client.git
+	git://ceph.newdream.net/git/ceph-client.git
+	git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git
 
 and the source for the full system is at
-	git://ceph.newdream.net/ceph.git
+	git://ceph.newdream.net/git/ceph.git

Documentation/filesystems/tmpfs.txt

@@ -82,11 +82,13 @@ tmpfs has a mount option to set the NUMA memory allocation policy for
 all files in that instance (if CONFIG_NUMA is enabled) - which can be
 adjusted on the fly via 'mount -o remount ...'
 
-mpol=default             prefers to allocate memory from the local node
+mpol=default             use the process allocation policy
+                         (see set_mempolicy(2))
 mpol=prefer:Node         prefers to allocate memory from the given Node
 mpol=bind:NodeList       allocates memory only from nodes in NodeList
 mpol=interleave          prefers to allocate from each node in turn
 mpol=interleave:NodeList allocates from each node of NodeList in turn
+mpol=local		 prefers to allocate memory from the local node
 
 NodeList format is a comma-separated list of decimal numbers and ranges,
 a range being two hyphen-separated decimal numbers, the smallest and
@@ -134,3 +136,5 @@ Author:
    Christoph Rohland <cr@sap.com>, 1.12.01
 Updated:
    Hugh Dickins, 4 June 2007
+Updated:
+   KOSAKI Motohiro, 16 Mar 2010

Documentation/memory-barriers.txt

@@ -3,6 +3,7 @@
 			 ============================
 
 By: David Howells <dhowells@redhat.com>
+    Paul E. McKenney <paulmck@linux.vnet.ibm.com>
 
 Contents:
 
@@ -60,6 +61,10 @@ Contents:
 
      - And then there's the Alpha.
 
+ (*) Example uses.
+
+     - Circular buffers.
+
  (*) References.
 
 
@@ -2226,6 +2231,21 @@ The Alpha defines the Linux kernel's memory barrier model.
 See the subsection on "Cache Coherency" above.
 
 
+============
+EXAMPLE USES
+============
+
+CIRCULAR BUFFERS
+----------------
+
+Memory barriers can be used to implement circular buffering without the need
+of a lock to serialise the producer with the consumer.  See:
+
+	Documentation/circular-buffers.txt
+
+for details.
+
+
 ==========
 REFERENCES
 ==========

Documentation/volatile-considered-harmful.txt

@@ -63,9 +63,9 @@ way to perform a busy wait is:
         cpu_relax();
 
 The cpu_relax() call can lower CPU power consumption or yield to a
-hyperthreaded twin processor; it also happens to serve as a memory barrier,
-so, once again, volatile is unnecessary.  Of course, busy-waiting is
-generally an anti-social act to begin with.
+hyperthreaded twin processor; it also happens to serve as a compiler
+barrier, so, once again, volatile is unnecessary.  Of course, busy-
+waiting is generally an anti-social act to begin with.
 
 There are still a few rare situations where volatile makes sense in the
 kernel:

MAINTAINERS

@@ -797,12 +797,12 @@ M:	Michael Petchkovsky <mkpetch@internode.on.net>
 S:	Maintained
 
 ARM/NOMADIK ARCHITECTURE
-M:     Alessandro Rubini <rubini@unipv.it>
-M:     STEricsson <STEricsson_nomadik_linux@list.st.com>
-L:     linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-S:     Maintained
-F:     arch/arm/mach-nomadik/
-F:     arch/arm/plat-nomadik/
+M:	Alessandro Rubini <rubini@unipv.it>
+M:	STEricsson <STEricsson_nomadik_linux@list.st.com>
+L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+S:	Maintained
+F:	arch/arm/mach-nomadik/
+F:	arch/arm/plat-nomadik/
 
 ARM/OPENMOKO NEO FREERUNNER (GTA02) MACHINE SUPPORT
 M:	Nelson Castillo <arhuaco@freaks-unidos.net>
@@ -1443,7 +1443,7 @@ F:	arch/powerpc/platforms/cell/
 
 CEPH DISTRIBUTED FILE SYSTEM CLIENT
 M:	Sage Weil <sage@newdream.net>
-L:	ceph-devel@lists.sourceforge.net
+L:	ceph-devel@vger.kernel.org
 W:	http://ceph.newdream.net/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git
 S:	Supported
@@ -1926,17 +1926,17 @@ F:	drivers/scsi/dpt*
 F:	drivers/scsi/dpt/
 
 DRBD DRIVER
-P:     Philipp Reisner
-P:     Lars Ellenberg
-M:     drbd-dev@lists.linbit.com
-L:     drbd-user@lists.linbit.com
-W:     http://www.drbd.org
-T:     git git://git.drbd.org/linux-2.6-drbd.git drbd
-T:     git git://git.drbd.org/drbd-8.3.git
-S:     Supported
-F:     drivers/block/drbd/
-F:     lib/lru_cache.c
-F:     Documentation/blockdev/drbd/
+P:	Philipp Reisner
+P:	Lars Ellenberg
+M:	drbd-dev@lists.linbit.com
+L:	drbd-user@lists.linbit.com
+W:	http://www.drbd.org
+T:	git git://git.drbd.org/linux-2.6-drbd.git drbd
+T:	git git://git.drbd.org/drbd-8.3.git
+S:	Supported
+F:	drivers/block/drbd/
+F:	lib/lru_cache.c
+F:	Documentation/blockdev/drbd/
 
 DRIVER CORE, KOBJECTS, AND SYSFS
 M:	Greg Kroah-Hartman <gregkh@suse.de>
@@ -3083,6 +3083,7 @@ F:	include/scsi/*iscsi*
 ISDN SUBSYSTEM
 M:	Karsten Keil <isdn@linux-pingi.de>
 L:	isdn4linux@listserv.isdn4linux.de (subscribers-only)
+L:	netdev@vger.kernel.org
 W:	http://www.isdn4linux.de
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/kkeil/isdn-2.6.git
 S:	Maintained
@@ -3269,6 +3270,16 @@ S:	Maintained
 F:	include/linux/kexec.h
 F:	kernel/kexec.c
 
+KEYS/KEYRINGS:
+M:	David Howells <dhowells@redhat.com>
+L:	keyrings@linux-nfs.org
+S:	Maintained
+F:	Documentation/keys.txt
+F:	include/linux/key.h
+F:	include/linux/key-type.h
+F:	include/keys/
+F:	security/keys/
+
 KGDB
 M:	Jason Wessel <jason.wessel@windriver.com>
 L:	kgdb-bugreport@lists.sourceforge.net
@@ -3518,8 +3529,8 @@ F:	drivers/scsi/sym53c8xx_2/
 LTP (Linux Test Project)
 M:	Rishikesh K Rajak <risrajak@linux.vnet.ibm.com>
 M:	Garrett Cooper <yanegomi@gmail.com>
-M:     Mike Frysinger <vapier@gentoo.org>
-M:     Subrata Modak <subrata@linux.vnet.ibm.com>
+M:	Mike Frysinger <vapier@gentoo.org>
+M:	Subrata Modak <subrata@linux.vnet.ibm.com>
 L:	ltp-list@lists.sourceforge.net (subscribers-only)
 W:	http://ltp.sourceforge.net/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/galak/ltp.git
@@ -5423,7 +5434,6 @@ S:	Maintained
 F:	sound/soc/codecs/twl4030*
 
 TIPC NETWORK LAYER
-M:	Per Liden <per.liden@ericsson.com>
 M:	Jon Maloy <jon.maloy@ericsson.com>
 M:	Allan Stephens <allan.stephens@windriver.com>
 L:	tipc-discussion@lists.sourceforge.net
@@ -6201,7 +6211,7 @@ F:	arch/x86/
 X86 PLATFORM DRIVERS
 M:	Matthew Garrett <mjg@redhat.com>
 L:	platform-driver-x86@vger.kernel.org
-T:      git git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86.git
 S:	Maintained
 F:	drivers/platform/x86
 

Makefile

@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 34
-EXTRAVERSION = -rc2
+EXTRAVERSION = -rc3
 NAME = Man-Eating Seals of Antiquity
 
 # *DOCUMENTATION*

arch/arm/common/locomo.c

@@ -290,7 +290,7 @@ static int locomo_suspend(struct platform_device *dev, pm_message_t state)
 	save->LCM_GPO     = locomo_readl(lchip->base + LOCOMO_GPO);	/* GPIO */
 	locomo_writel(0x00, lchip->base + LOCOMO_GPO);
 	save->LCM_SPICT   = locomo_readl(lchip->base + LOCOMO_SPI + LOCOMO_SPICT);	/* SPI */
-	locomo_writel(0x40, lchip->base + LOCOMO_SPICT);
+	locomo_writel(0x40, lchip->base + LOCOMO_SPI + LOCOMO_SPICT);
 	save->LCM_GPE     = locomo_readl(lchip->base + LOCOMO_GPE);	/* GPIO */
 	locomo_writel(0x00, lchip->base + LOCOMO_GPE);
 	save->LCM_ASD     = locomo_readl(lchip->base + LOCOMO_ASD);	/* ADSTART */
@@ -418,7 +418,7 @@ __locomo_probe(struct device *me, struct resource *mem, int irq)
 	/* Longtime timer */
 	locomo_writel(0, lchip->base + LOCOMO_LTINT);
 	/* SPI */
-	locomo_writel(0, lchip->base + LOCOMO_SPIIE);
+	locomo_writel(0, lchip->base + LOCOMO_SPI + LOCOMO_SPIIE);
 
 	locomo_writel(6 + 8 + 320 + 30 - 10, lchip->base + LOCOMO_ASD);
 	r = locomo_readl(lchip->base + LOCOMO_ASD);
@@ -707,7 +707,7 @@ void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int
 	udelay(DAC_SCL_HIGH_HOLD_TIME);	/* 4.7 usec */
 	if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) {	/* High is error */
 		printk(KERN_WARNING "locomo: m62332_senddata Error 1\n");
-		return;
+		goto out;
 	}
 
 	/* Send Sub address (LSB is channel select) */
@@ -735,7 +735,7 @@ void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int
 	udelay(DAC_SCL_HIGH_HOLD_TIME);	/* 4.7 usec */
 	if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) {	/* High is error */
 		printk(KERN_WARNING "locomo: m62332_senddata Error 2\n");
-		return;
+		goto out;
 	}
 
 	/* Send DAC data */
@@ -760,9 +760,9 @@ void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int
 	udelay(DAC_SCL_HIGH_HOLD_TIME);	/* 4.7 usec */
 	if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) {	/* High is error */
 		printk(KERN_WARNING "locomo: m62332_senddata Error 3\n");
-		return;
 	}
 
+out:
 	/* stop */
 	r = locomo_readl(mapbase + LOCOMO_DAC);
 	r &=  ~(LOCOMO_DAC_SCLOEB);

arch/arm/mach-ixp23xx/include/mach/memory.h

@@ -19,7 +19,7 @@
  */
 #define PHYS_OFFSET		(0x00000000)
 
-#define IXP23XX_PCI_SDRAM_OFFSET (*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0))
+#define IXP23XX_PCI_SDRAM_OFFSET (*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0)
 
 #define __phys_to_bus(x)	((x) + (IXP23XX_PCI_SDRAM_OFFSET - PHYS_OFFSET))
 #define __bus_to_phys(x)	((x) - (IXP23XX_PCI_SDRAM_OFFSET - PHYS_OFFSET))

arch/arm/mach-kirkwood/mv88f6281gtw_ge-setup.c

@@ -74,9 +74,9 @@ static struct gpio_keys_button mv88f6281gtw_ge_button_pins[] = {
 		.desc		= "SWR Button",
 		.active_low	= 1,
 	}, {
-		.code		= KEY_F1,
+		.code		= KEY_WPS_BUTTON,
 		.gpio		= 46,
-		.desc		= "WPS Button(F1)",
+		.desc		= "WPS Button",
 		.active_low	= 1,
 	},
 };

arch/arm/mach-mmp/include/mach/uncompress.h

@@ -14,7 +14,7 @@
 #define UART2_BASE	(APB_PHYS_BASE + 0x17000)
 #define UART3_BASE	(APB_PHYS_BASE + 0x18000)
 
-static volatile unsigned long *UART = (unsigned long *)UART2_BASE;
+static volatile unsigned long *UART;
 
 static inline void putc(char c)
 {
@@ -37,6 +37,9 @@ static inline void flush(void)
 
 static inline void arch_decomp_setup(void)
 {
+	/* default to UART2 */
+	UART = (unsigned long *)UART2_BASE;
+
 	if (machine_is_avengers_lite())
 		UART = (unsigned long *)UART3_BASE;
 }

arch/arm/mach-orion5x/wrt350n-v2-setup.c

@@ -77,7 +77,7 @@ static struct gpio_keys_button wrt350n_v2_buttons[] = {
 		.desc		= "Reset Button",
 		.active_low	= 1,
 	}, {
-		.code		= KEY_WLAN,
+		.code		= KEY_WPS_BUTTON,
 		.gpio		= 2,
 		.desc		= "WPS Button",
 		.active_low	= 1,

arch/arm/mach-pxa/Kconfig

@@ -272,7 +272,6 @@ config MACH_H5000
 config MACH_HIMALAYA
 	bool "HTC Himalaya Support"
 	select CPU_PXA26x
-	select FB_W100
 
 config MACH_MAGICIAN
 	bool "Enable HTC Magician Support"
@@ -454,6 +453,13 @@ config PXA_SHARPSL
 config SHARPSL_PM
 	bool
 	select APM_EMULATION
+	select SHARPSL_PM_MAX1111
+
+config SHARPSL_PM_MAX1111
+	bool
+	depends on !CORGI_SSP_DEPRECATED
+	select HWMON
+	select SENSORS_MAX1111
 
 config CORGI_SSP_DEPRECATED
 	bool
@@ -547,7 +553,6 @@ config MACH_E740
 	bool "Toshiba e740"
 	default y
 	depends on ARCH_PXA_ESERIES
-	select FB_W100
 	help
 	  Say Y here if you intend to run this kernel on a Toshiba
 	  e740 family PDA.
@@ -556,7 +561,6 @@ config MACH_E750
 	bool "Toshiba e750"
 	default y
 	depends on ARCH_PXA_ESERIES
-	select FB_W100
 	help
 	  Say Y here if you intend to run this kernel on a Toshiba
 	  e750 family PDA.
@@ -573,7 +577,6 @@ config MACH_E800
 	bool "Toshiba e800"
 	default y
 	depends on ARCH_PXA_ESERIES
-	select FB_W100
 	help
 	  Say Y here if you intend to run this kernel on a Toshiba
 	  e800 family PDA.

arch/arm/mach-pxa/imote2.c

@@ -559,10 +559,6 @@ static void __init imote2_init(void)
 	pxa_set_btuart_info(NULL);
 	pxa_set_stuart_info(NULL);
 
-	/* SPI chip select directions - all other directions should
-	 * be handled by drivers.*/
-	gpio_direction_output(37, 0);
-
 	platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
 
 	pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);

arch/arm/mach-pxa/include/mach/uncompress.h

@@ -16,9 +16,9 @@
 #define BTUART_BASE	(0x40200000)
 #define STUART_BASE	(0x40700000)
 
-static unsigned long uart_base = FFUART_BASE;
-static unsigned int uart_shift = 2;
-static unsigned int uart_is_pxa = 1;
+static unsigned long uart_base;
+static unsigned int uart_shift;
+static unsigned int uart_is_pxa;
 
 static inline unsigned char uart_read(int offset)
 {
@@ -56,6 +56,11 @@ static inline void flush(void)
 
 static inline void arch_decomp_setup(void)
 {
+	/* initialize to default */
+	uart_base = FFUART_BASE;
+	uart_shift = 2;
+	uart_is_pxa = 1;
+
 	if (machine_is_littleton() || machine_is_intelmote2()
 	    || machine_is_csb726() || machine_is_stargate2()
 	    || machine_is_cm_x300() || machine_is_balloon3())

arch/arm/mach-pxa/raumfeld.c

@@ -37,8 +37,6 @@
 #include <linux/lis3lv02d.h>
 #include <linux/pda_power.h>
 #include <linux/power_supply.h>
-#include <linux/pda_power.h>
-#include <linux/power_supply.h>
 #include <linux/regulator/max8660.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/fixed.h>
@@ -444,7 +442,7 @@ static struct gpio_keys_button gpio_keys_button[] = {
 		.active_low		= 0,
 		.wakeup			= 0,
 		.debounce_interval	= 5, /* ms */
-		.desc			= "on/off button",
+		.desc			= "on_off button",
 	},
 };
 

arch/arm/mach-pxa/stargate2.c

@@ -764,11 +764,6 @@ static void __init stargate2_init(void)
 	pxa_set_btuart_info(NULL);
 	pxa_set_stuart_info(NULL);
 
-	/* spi chip selects */
-	gpio_direction_output(37, 0);
-	gpio_direction_output(24, 0);
-	gpio_direction_output(39, 0);
-
 	platform_add_devices(ARRAY_AND_SIZE(stargate2_devices));
 
 	pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);

arch/arm/tools/mach-types

@@ -12,7 +12,7 @@
 #
 #   http://www.arm.linux.org.uk/developer/machines/?action=new
 #
-# Last update: Sat Feb 20 14:16:15 2010
+# Last update: Sat Mar 20 15:35:41 2010
 #
 # machine_is_xxx	CONFIG_xxxx		MACH_TYPE_xxx		number
 #
@@ -2663,7 +2663,7 @@ reb01			MACH_REB01		REB01			2675
 aquila			MACH_AQUILA		AQUILA			2676
 spark_sls_hw2		MACH_SPARK_SLS_HW2	SPARK_SLS_HW2		2677
 sheeva_esata		MACH_ESATA_SHEEVAPLUG	ESATA_SHEEVAPLUG	2678
-surf7x30		MACH_SURF7X30		SURF7X30		2679
+msm7x30_surf		MACH_MSM7X30_SURF	MSM7X30_SURF		2679
 micro2440		MACH_MICRO2440		MICRO2440		2680
 am2440			MACH_AM2440		AM2440			2681
 tq2440			MACH_TQ2440		TQ2440			2682
@@ -2678,3 +2678,74 @@ vc088x			MACH_VC088X		VC088X			2690
 mioa702			MACH_MIOA702		MIOA702			2691
 hpmin			MACH_HPMIN		HPMIN			2692
 ak880xak		MACH_AK880XAK		AK880XAK		2693
+arm926tomap850		MACH_ARM926TOMAP850	ARM926TOMAP850		2694
+lkevm			MACH_LKEVM		LKEVM			2695
+mw6410			MACH_MW6410		MW6410			2696
+terastation_wxl		MACH_TERASTATION_WXL	TERASTATION_WXL		2697
+cpu8000e		MACH_CPU8000E		CPU8000E		2698
+catania			MACH_CATANIA		CATANIA			2699
+tokyo			MACH_TOKYO		TOKYO			2700
+msm7201a_surf		MACH_MSM7201A_SURF	MSM7201A_SURF		2701
+msm7201a_ffa		MACH_MSM7201A_FFA	MSM7201A_FFA		2702
+msm7x25_surf		MACH_MSM7X25_SURF	MSM7X25_SURF		2703
+msm7x25_ffa		MACH_MSM7X25_FFA	MSM7X25_FFA		2704
+msm7x27_surf		MACH_MSM7X27_SURF	MSM7X27_SURF		2705
+msm7x27_ffa		MACH_MSM7X27_FFA	MSM7X27_FFA		2706
+msm7x30_ffa		MACH_MSM7X30_FFA	MSM7X30_FFA		2707
+qsd8x50_surf		MACH_QSD8X50_SURF	QSD8X50_SURF		2708
+qsd8x50_comet		MACH_QSD8X50_COMET	QSD8X50_COMET		2709
+qsd8x50_ffa		MACH_QSD8X50_FFA	QSD8X50_FFA		2710
+qsd8x50a_surf		MACH_QSD8X50A_SURF	QSD8X50A_SURF		2711
+qsd8x50a_ffa		MACH_QSD8X50A_FFA	QSD8X50A_FFA		2712
+adx_xgcp10		MACH_ADX_XGCP10		ADX_XGCP10		2713
+mcgwumts2a		MACH_MCGWUMTS2A		MCGWUMTS2A		2714
+mobikt			MACH_MOBIKT		MOBIKT			2715
+mx53_evk		MACH_MX53_EVK		MX53_EVK		2716
+igep0030		MACH_IGEP0030		IGEP0030		2717
+axell_h40_h50_ctrl	MACH_AXELL_H40_H50_CTRL	AXELL_H40_H50_CTRL	2718
+dtcommod		MACH_DTCOMMOD		DTCOMMOD		2719
+gould			MACH_GOULD		GOULD			2720
+siberia			MACH_SIBERIA		SIBERIA			2721
+sbc3530			MACH_SBC3530		SBC3530			2722
+qarm			MACH_QARM		QARM			2723
+mips			MACH_MIPS		MIPS			2724
+mx27grb			MACH_MX27GRB		MX27GRB			2725
+sbc8100			MACH_SBC8100		SBC8100			2726
+saarb			MACH_SAARB		SAARB			2727
+omap3mini		MACH_OMAP3MINI		OMAP3MINI		2728
+cnmbook7se		MACH_CNMBOOK7SE		CNMBOOK7SE		2729
+catan			MACH_CATAN		CATAN			2730
+harmony			MACH_HARMONY		HARMONY			2731
+tonga			MACH_TONGA		TONGA			2732
+cybook_orizon		MACH_CYBOOK_ORIZON	CYBOOK_ORIZON		2733
+htcrhodiumcdma		MACH_HTCRHODIUMCDMA	HTCRHODIUMCDMA		2734
+epc_g45			MACH_EPC_G45		EPC_G45			2735
+epc_lpc3250		MACH_EPC_LPC3250	EPC_LPC3250		2736
+mxc91341evb		MACH_MXC91341EVB	MXC91341EVB		2737
+rtw1000			MACH_RTW1000		RTW1000			2738
+bobcat			MACH_BOBCAT		BOBCAT			2739
+trizeps6		MACH_TRIZEPS6		TRIZEPS6		2740
+msm7x30_fluid		MACH_MSM7X30_FLUID	MSM7X30_FLUID		2741
+nedap9263		MACH_NEDAP9263		NEDAP9263		2742
+netgear_ms2110		MACH_NETGEAR_MS2110	NETGEAR_MS2110		2743
+bmx			MACH_BMX		BMX			2744
+netstream		MACH_NETSTREAM		NETSTREAM		2745
+vpnext_rcu		MACH_VPNEXT_RCU		VPNEXT_RCU		2746
+vpnext_mpu		MACH_VPNEXT_MPU		VPNEXT_MPU		2747
+bcmring_tablet_v1	MACH_BCMRING_TABLET_V1	BCMRING_TABLET_V1	2748
+sgarm10			MACH_SGARM10		SGARM10			2749
+cm_t3517		MACH_CM_T3517		CM_T3517		2750
+omap3_cps		MACH_OMAP3_CPS		OMAP3_CPS		2751
+axar1500_receiver	MACH_AXAR1500_RECEIVER	AXAR1500_RECEIVER	2752
+wbd222			MACH_WBD222		WBD222			2753
+mt65xx			MACH_MT65XX		MT65XX			2754
+msm8x60_surf		MACH_MSM8X60_SURF	MSM8X60_SURF		2755
+msm8x60_sim		MACH_MSM8X60_SIM	MSM8X60_SIM		2756
+vmc300			MACH_VMC300		VMC300			2757
+tcc8000_sdk		MACH_TCC8000_SDK	TCC8000_SDK		2758
+nanos			MACH_NANOS		NANOS			2759
+stamp9g10		MACH_STAMP9G10		STAMP9G10		2760
+stamp9g45		MACH_STAMP9G45		STAMP9G45		2761
+h6053			MACH_H6053		H6053			2762
+smint01			MACH_SMINT01		SMINT01			2763
+prtlvt2			MACH_PRTLVT2		PRTLVT2			2764

arch/cris/arch-v32/drivers/pci/bios.c

@@ -50,7 +50,7 @@ pcibios_align_resource(void *data, const struct resource *res,
 	if ((res->flags & IORESOURCE_IO) && (start & 0x300))
 		start = (start + 0x3ff) & ~0x3ff;
 
-	return start
+	return start;
 }
 
 int pcibios_enable_resources(struct pci_dev *dev, int mask)

arch/frv/mb93090-mb00/pci-frv.c

@@ -41,7 +41,7 @@ pcibios_align_resource(void *data, const struct resource *res,
 	if ((res->flags & IORESOURCE_IO) && (start & 0x300))
 		start = (start + 0x3ff) & ~0x3ff;
 
-	return start
+	return start;
 }
 
 
@@ -94,8 +94,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
 				r = &dev->resource[idx];
 				if (!r->start)
 					continue;
-				if (pci_claim_resource(dev, idx) < 0)
-					printk(KERN_ERR "PCI: Cannot allocate resource region %d of bridge %s\n", idx, pci_name(dev));
+				pci_claim_resource(dev, idx);
 			}
 		}
 		pcibios_allocate_bus_resources(&bus->children);
@@ -125,7 +124,6 @@ static void __init pcibios_allocate_resources(int pass)
 				DBG("PCI: Resource %08lx-%08lx (f=%lx, d=%d, p=%d)\n",
 				    r->start, r->end, r->flags, disabled, pass);
 				if (pci_claim_resource(dev, idx) < 0) {
-					printk(KERN_ERR "PCI: Cannot allocate resource region %d of device %s\n", idx, pci_name(dev));
 					/* We'll assign a new address later */
 					r->end -= r->start;
 					r->start = 0;

arch/microblaze/Kconfig

@@ -75,9 +75,6 @@ config LOCKDEP_SUPPORT
 config HAVE_LATENCYTOP_SUPPORT
 	def_bool y
 
-config PCI
-	def_bool n
-
 config DTC
 	def_bool y
 

arch/microblaze/Makefile

@@ -84,7 +84,7 @@ define archhelp
   echo '* linux.bin    - Create raw binary'
   echo '  linux.bin.gz - Create compressed raw binary'
   echo '  simpleImage.<dt> - ELF image with $(arch)/boot/dts/<dt>.dts linked in'
-  echo '                   - stripped elf with fdt blob
+  echo '                   - stripped elf with fdt blob'
   echo '  simpleImage.<dt>.unstrip - full ELF image with fdt blob'
   echo '  *_defconfig      - Select default config from arch/microblaze/configs'
   echo ''
@@ -94,3 +94,5 @@ define archhelp
   echo '  name of a dts file from the arch/microblaze/boot/dts/ directory'
   echo '  (minus the .dts extension).'
 endef
+
+MRPROPER_FILES += $(boot)/simpleImage.*

arch/microblaze/boot/Makefile

@@ -23,8 +23,6 @@ $(obj)/system.dtb: $(obj)/$(DTB).dtb
 endif
 
 $(obj)/linux.bin: vmlinux FORCE
-	[ -n $(CONFIG_INITRAMFS_SOURCE) ] && [ ! -e $(CONFIG_INITRAMFS_SOURCE) ] && \
-	touch $(CONFIG_INITRAMFS_SOURCE) || echo "No CPIO image"
 	$(call if_changed,objcopy)
 	$(call if_changed,uimage)
 	@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
@@ -62,6 +60,4 @@ quiet_cmd_dtc = DTC     $@
 $(obj)/%.dtb: $(dtstree)/%.dts FORCE
 	$(call if_changed,dtc)
 
-clean-kernel += linux.bin linux.bin.gz simpleImage.*
-
-clean-files += *.dtb simpleImage.*.unstrip
+clean-files += *.dtb simpleImage.*.unstrip linux.bin.ub

arch/microblaze/include/asm/processor.h

@@ -14,7 +14,6 @@
 #include <asm/ptrace.h>
 #include <asm/setup.h>
 #include <asm/registers.h>
-#include <asm/segment.h>
 #include <asm/entry.h>
 #include <asm/current.h>
 

arch/microblaze/include/asm/segment.h

@@ -1,49 +0,0 @@
-/*
- * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
- * Copyright (C) 2008-2009 PetaLogix
- * Copyright (C) 2006 Atmark Techno, Inc.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#ifndef _ASM_MICROBLAZE_SEGMENT_H
-#define _ASM_MICROBLAZE_SEGMENT_H
-
-# ifndef __ASSEMBLY__
-
-typedef struct {
-	unsigned long seg;
-} mm_segment_t;
-
-/*
- * On Microblaze the fs value is actually the top of the corresponding
- * address space.
- *
- * The fs value determines whether argument validity checking should be
- * performed or not. If get_fs() == USER_DS, checking is performed, with
- * get_fs() == KERNEL_DS, checking is bypassed.
- *
- * For historical reasons, these macros are grossly misnamed.
- *
- * For non-MMU arch like Microblaze, KERNEL_DS and USER_DS is equal.
- */
-# define MAKE_MM_SEG(s)       ((mm_segment_t) { (s) })
-
-#  ifndef CONFIG_MMU
-#  define KERNEL_DS	MAKE_MM_SEG(0)
-#  define USER_DS	KERNEL_DS
-#  else
-#  define KERNEL_DS	MAKE_MM_SEG(0xFFFFFFFF)
-#  define USER_DS	MAKE_MM_SEG(TASK_SIZE - 1)
-#  endif
-
-# define get_ds()	(KERNEL_DS)
-# define get_fs()	(current_thread_info()->addr_limit)
-# define set_fs(val)	(current_thread_info()->addr_limit = (val))
-
-# define segment_eq(a, b)	((a).seg == (b).seg)
-
-# endif /* __ASSEMBLY__ */
-#endif /* _ASM_MICROBLAZE_SEGMENT_H */

arch/microblaze/include/asm/thread_info.h

@@ -19,7 +19,6 @@
 #ifndef __ASSEMBLY__
 # include <linux/types.h>
 # include <asm/processor.h>
-# include <asm/segment.h>
 
 /*
  * low level task data that entry.S needs immediate access to
@@ -60,6 +59,10 @@ struct cpu_context {
 	__u32	fsr;
 };
 
+typedef struct {
+	unsigned long seg;
+} mm_segment_t;
+
 struct thread_info {
 	struct task_struct	*task; /* main task structure */
 	struct exec_domain	*exec_domain; /* execution domain */

arch/microblaze/include/asm/tlbflush.h

@@ -24,6 +24,7 @@ extern void _tlbie(unsigned long address);
 extern void _tlbia(void);
 
 #define __tlbia()	{ preempt_disable(); _tlbia(); preempt_enable(); }
+#define __tlbie(x)	{ _tlbie(x); }
 
 static inline void local_flush_tlb_all(void)
 	{ __tlbia(); }
@@ -31,7 +32,7 @@ static inline void local_flush_tlb_mm(struct mm_struct *mm)
 	{ __tlbia(); }
 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
 				unsigned long vmaddr)
-	{ _tlbie(vmaddr); }
+	{ __tlbie(vmaddr); }
 static inline void local_flush_tlb_range(struct vm_area_struct *vma,
 		unsigned long start, unsigned long end)
 	{ __tlbia(); }

arch/microblaze/include/asm/uaccess.h

@@ -22,101 +22,73 @@
 #include <asm/mmu.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
-#include <asm/segment.h>
 #include <linux/string.h>
 
 #define VERIFY_READ	0
 #define VERIFY_WRITE	1
 
-#define __clear_user(addr, n)	(memset((void *)(addr), 0, (n)), 0)
-
-#ifndef CONFIG_MMU
-
-extern int ___range_ok(unsigned long addr, unsigned long size);
-
-#define __range_ok(addr, size) \
-		___range_ok((unsigned long)(addr), (unsigned long)(size))
-
-#define access_ok(type, addr, size) (__range_ok((addr), (size)) == 0)
-#define __access_ok(add, size) (__range_ok((addr), (size)) == 0)
-
-/* Undefined function to trigger linker error */
-extern int bad_user_access_length(void);
-
-/* FIXME this is function for optimalization -> memcpy */
-#define __get_user(var, ptr)				\
-({							\
-	int __gu_err = 0;				\
-	switch (sizeof(*(ptr))) {			\
-	case 1:						\
-	case 2:						\
-	case 4:						\
-		(var) = *(ptr);				\
-		break;					\
-	case 8:						\
-		memcpy((void *) &(var), (ptr), 8);	\
-		break;					\
-	default:					\
-		(var) = 0;				\
-		__gu_err = __get_user_bad();		\
-		break;					\
-	}						\
-	__gu_err;					\
-})
+/*
+ * On Microblaze the fs value is actually the top of the corresponding
+ * address space.
+ *
+ * The fs value determines whether argument validity checking should be
+ * performed or not. If get_fs() == USER_DS, checking is performed, with
+ * get_fs() == KERNEL_DS, checking is bypassed.
+ *
+ * For historical reasons, these macros are grossly misnamed.
+ *
+ * For non-MMU arch like Microblaze, KERNEL_DS and USER_DS is equal.
+ */
+# define MAKE_MM_SEG(s)       ((mm_segment_t) { (s) })
 
-#define __get_user_bad()	(bad_user_access_length(), (-EFAULT))
+#  ifndef CONFIG_MMU
+#  define KERNEL_DS	MAKE_MM_SEG(0)
+#  define USER_DS	KERNEL_DS
+#  else
+#  define KERNEL_DS	MAKE_MM_SEG(0xFFFFFFFF)
+#  define USER_DS	MAKE_MM_SEG(TASK_SIZE - 1)
+#  endif
 
-/* FIXME is not there defined __pu_val */
-#define __put_user(var, ptr)					\
-({								\
-	int __pu_err = 0;					\
-	switch (sizeof(*(ptr))) {				\
-	case 1:							\
-	case 2:							\
-	case 4:							\
-		*(ptr) = (var);					\
-		break;						\
-	case 8: {						\
-		typeof(*(ptr)) __pu_val = (var);		\
-		memcpy(ptr, &__pu_val, sizeof(__pu_val));	\
-		}						\
-		break;						\
-	default:						\
-		__pu_err = __put_user_bad();			\
-		break;						\
-	}							\
-	__pu_err;						\
-})
+# define get_ds()	(KERNEL_DS)
+# define get_fs()	(current_thread_info()->addr_limit)
+# define set_fs(val)	(current_thread_info()->addr_limit = (val))
 
-#define __put_user_bad()	(bad_user_access_length(), (-EFAULT))
+# define segment_eq(a, b)	((a).seg == (b).seg)
 
-#define put_user(x, ptr)	__put_user((x), (ptr))
-#define get_user(x, ptr)	__get_user((x), (ptr))
+/*
+ * The exception table consists of pairs of addresses: the first is the
+ * address of an instruction that is allowed to fault, and the second is
+ * the address at which the program should continue. No registers are
+ * modified, so it is entirely up to the continuation code to figure out
+ * what to do.
+ *
+ * All the routines below use bits of fixup code that are out of line
+ * with the main instruction path. This means when everything is well,
+ * we don't even have to jump over them. Further, they do not intrude
+ * on our cache or tlb entries.
+ */
+struct exception_table_entry {
+	unsigned long insn, fixup;
+};
 
-#define copy_to_user(to, from, n)	(memcpy((to), (from), (n)), 0)
-#define copy_from_user(to, from, n)	(memcpy((to), (from), (n)), 0)
+/* Returns 0 if exception not found and fixup otherwise.  */
+extern unsigned long search_exception_table(unsigned long);
 
-#define __copy_to_user(to, from, n)	(copy_to_user((to), (from), (n)))
-#define __copy_from_user(to, from, n)	(copy_from_user((to), (from), (n)))
-#define __copy_to_user_inatomic(to, from, n) \
-			(__copy_to_user((to), (from), (n)))
-#define __copy_from_user_inatomic(to, from, n) \
-			(__copy_from_user((to), (from), (n)))
+#ifndef CONFIG_MMU
 
-static inline unsigned long clear_user(void *addr, unsigned long size)
+/* Check against bounds of physical memory */
+static inline int ___range_ok(unsigned long addr, unsigned long size)
 {
-	if (access_ok(VERIFY_WRITE, addr, size))
-		size = __clear_user(addr, size);
-	return size;
+	return ((addr < memory_start) ||
+		((addr + size) > memory_end));
 }
 
-/* Returns 0 if exception not found and fixup otherwise.  */
-extern unsigned long search_exception_table(unsigned long);
+#define __range_ok(addr, size) \
+		___range_ok((unsigned long)(addr), (unsigned long)(size))
 
-extern long strncpy_from_user(char *dst, const char *src, long count);
-extern long strnlen_user(const char *src, long count);
+#define access_ok(type, addr, size) (__range_ok((addr), (size)) == 0)
 
-#else /* CONFIG_MMU */
+#else
 
 /*
  * Address is valid if:
@@ -129,24 +101,88 @@ extern long strnlen_user(const char *src, long count);
 /* || printk("access_ok failed for %s at 0x%08lx (size %d), seg 0x%08x\n",
  type?"WRITE":"READ",addr,size,get_fs().seg)) */
 
-/*
- * All the __XXX versions macros/functions below do not perform
- * access checking. It is assumed that the necessary checks have been
- * already performed before the finction (macro) is called.
- */
+#endif
 
-#define get_user(x, ptr)						\
-({									\
-	access_ok(VERIFY_READ, (ptr), sizeof(*(ptr)))			\
-		? __get_user((x), (ptr)) : -EFAULT;			\
-})
+#ifdef CONFIG_MMU
+# define __FIXUP_SECTION	".section .fixup,\"ax\"\n"
+# define __EX_TABLE_SECTION	".section __ex_table,\"a\"\n"
+#else
+# define __FIXUP_SECTION	".section .discard,\"ax\"\n"
+# define __EX_TABLE_SECTION	".section .discard,\"a\"\n"
+#endif
 
-#define put_user(x, ptr)						\
-({									\
-	access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr)))			\
-		? __put_user((x), (ptr)) : -EFAULT;			\
+extern unsigned long __copy_tofrom_user(void __user *to,
+		const void __user *from, unsigned long size);
+
+/* Return: number of not copied bytes, i.e. 0 if OK or non-zero if fail. */
+static inline unsigned long __must_check __clear_user(void __user *to,
+							unsigned long n)
+{
+	/* normal memset with two words to __ex_table */
+	__asm__ __volatile__ (				\
+			"1:	sb	r0, %2, r0;"	\
+			"	addik	%0, %0, -1;"	\
+			"	bneid	%0, 1b;"	\
+			"	addik	%2, %2, 1;"	\
+			"2:			"	\
+			__EX_TABLE_SECTION		\
+			".word	1b,2b;"			\
+			".previous;"			\
+		: "=r"(n)				\
+		: "0"(n), "r"(to)
+	);
+	return n;
+}
+
+static inline unsigned long __must_check clear_user(void __user *to,
+							unsigned long n)
+{
+	might_sleep();
+	if (unlikely(!access_ok(VERIFY_WRITE, to, n)))
+		return n;
+
+	return __clear_user(to, n);
+}
+
+/* put_user and get_user macros */
+extern long __user_bad(void);
+
+#define __get_user_asm(insn, __gu_ptr, __gu_val, __gu_err)	\
+({								\
+	__asm__ __volatile__ (					\
+			"1:"	insn	" %1, %2, r0;"		\
+			"	addk	%0, r0, r0;"		\
+			"2:			"		\
+			__FIXUP_SECTION				\
+			"3:	brid	2b;"			\
+			"	addik	%0, r0, %3;"		\
+			".previous;"				\
+			__EX_TABLE_SECTION			\
+			".word	1b,3b;"				\
+			".previous;"				\
+		: "=&r"(__gu_err), "=r"(__gu_val)		\
+		: "r"(__gu_ptr), "i"(-EFAULT)			\
+	);							\
 })
 
+/**
+ * get_user: - Get a simple variable from user space.
+ * @x:   Variable to store result.
+ * @ptr: Source address, in user space.
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * This macro copies a single simple variable from user space to kernel
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and the result of
+ * dereferencing @ptr must be assignable to @x without a cast.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ * On error, the variable @x is set to zero.
+ */
+
 #define __get_user(x, ptr)						\
 ({									\
 	unsigned long __gu_val;						\
@@ -163,30 +199,74 @@ extern long strnlen_user(const char *src, long count);
 		__get_user_asm("lw", (ptr), __gu_val, __gu_err);	\
 		break;							\
 	default:							\
-		__gu_val = 0; __gu_err = -EINVAL;			\
+		/* __gu_val = 0; __gu_err = -EINVAL;*/ __gu_err = __user_bad();\
 	}								\
 	x = (__typeof__(*(ptr))) __gu_val;				\
 	__gu_err;							\
 })
 
-#define __get_user_asm(insn, __gu_ptr, __gu_val, __gu_err)		\
+
+#define get_user(x, ptr)						\
 ({									\
-	__asm__ __volatile__ (						\
-			"1:"	insn	" %1, %2, r0;			\
-				addk	%0, r0, r0;			\
-			2:						\
-			.section .fixup,\"ax\";				\
-			3:	brid	2b;				\
-				addik	%0, r0, %3;			\
-			.previous;					\
-			.section __ex_table,\"a\";			\
-			.word	1b,3b;					\
-			.previous;"					\
-		: "=r"(__gu_err), "=r"(__gu_val)			\
-		: "r"(__gu_ptr), "i"(-EFAULT)				\
-	);								\
+	access_ok(VERIFY_READ, (ptr), sizeof(*(ptr)))			\
+		? __get_user((x), (ptr)) : -EFAULT;			\
+})
+
+#define __put_user_asm(insn, __gu_ptr, __gu_val, __gu_err)	\
+({								\
+	__asm__ __volatile__ (					\
+			"1:"	insn	" %1, %2, r0;"		\
+			"	addk	%0, r0, r0;"		\
+			"2:			"		\
+			__FIXUP_SECTION				\
+			"3:	brid	2b;"			\
+			"	addik	%0, r0, %3;"		\
+			".previous;"				\
+			__EX_TABLE_SECTION			\
+			".word	1b,3b;"				\
+			".previous;"				\
+		: "=&r"(__gu_err)				\
+		: "r"(__gu_val), "r"(__gu_ptr), "i"(-EFAULT)	\
+	);							\
 })
 
+#define __put_user_asm_8(__gu_ptr, __gu_val, __gu_err)		\
+({								\
+	__asm__ __volatile__ ("	lwi	%0, %1, 0;"		\
+			"1:	swi	%0, %2, 0;"		\
+			"	lwi	%0, %1, 4;"		\
+			"2:	swi	%0, %2, 4;"		\
+			"	addk	%0, r0, r0;"		\
+			"3:			"		\
+			__FIXUP_SECTION				\
+			"4:	brid	3b;"			\
+			"	addik	%0, r0, %3;"		\
+			".previous;"				\
+			__EX_TABLE_SECTION			\
+			".word	1b,4b,2b,4b;"			\
+			".previous;"				\
+		: "=&r"(__gu_err)				\
+		: "r"(&__gu_val), "r"(__gu_ptr), "i"(-EFAULT)	\
+		);						\
+})
+
+/**
+ * put_user: - Write a simple value into user space.
+ * @x:   Value to copy to user space.
+ * @ptr: Destination address, in user space.
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * This macro copies a single simple value from kernel space to user
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and @x must be assignable
+ * to the result of dereferencing @ptr.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ */
+
 #define __put_user(x, ptr)						\
 ({									\
 	__typeof__(*(ptr)) volatile __gu_val = (x);			\
@@ -195,7 +275,7 @@ extern long strnlen_user(const char *src, long count);
 	case 1:								\
 		__put_user_asm("sb", (ptr), __gu_val, __gu_err);	\
 		break;							\
-	case 2: 							\
+	case 2:								\
 		__put_user_asm("sh", (ptr), __gu_val, __gu_err);	\
 		break;							\
 	case 4:								\
@@ -205,121 +285,82 @@ extern long strnlen_user(const char *src, long count);
 		__put_user_asm_8((ptr), __gu_val, __gu_err);		\
 		break;							\
 	default:							\
-		__gu_err = -EINVAL;					\
+		/*__gu_err = -EINVAL;*/	__gu_err = __user_bad();	\
 	}								\
 	__gu_err;							\
 })
 
-#define __put_user_asm_8(__gu_ptr, __gu_val, __gu_err)	\
-({							\
-__asm__ __volatile__ ("	lwi	%0, %1, 0;		\
-		1:	swi	%0, %2, 0;		\
-			lwi	%0, %1, 4;		\
-		2:	swi	%0, %2, 4;		\
-			addk	%0,r0,r0;		\
-		3:					\
-		.section .fixup,\"ax\";			\
-		4:	brid	3b;			\
-			addik	%0, r0, %3;		\
-		.previous;				\
-		.section __ex_table,\"a\";		\
-		.word	1b,4b,2b,4b;			\
-		.previous;"				\
-	: "=&r"(__gu_err)				\
-	: "r"(&__gu_val),				\
-	"r"(__gu_ptr), "i"(-EFAULT)			\
-	);						\
-})
+#ifndef CONFIG_MMU
 
-#define __put_user_asm(insn, __gu_ptr, __gu_val, __gu_err)	\
-({								\
-	__asm__ __volatile__ (					\
-			"1:"	insn	" %1, %2, r0;		\
-				addk	%0, r0, r0;		\
-			2:					\
-			.section .fixup,\"ax\";			\
-			3:	brid	2b;			\
-				addik	%0, r0, %3;		\
-			.previous;				\
-			.section __ex_table,\"a\";		\
-			.word	1b,3b;				\
-			.previous;"				\
-		: "=r"(__gu_err)				\
-		: "r"(__gu_val), "r"(__gu_ptr), "i"(-EFAULT)	\
-	);							\
-})
+#define put_user(x, ptr)	__put_user((x), (ptr))
 
-/*
- * Return: number of not copied bytes, i.e. 0 if OK or non-zero if fail.
- */
-static inline int clear_user(char *to, int size)
-{
-	if (size && access_ok(VERIFY_WRITE, to, size)) {
-		__asm__ __volatile__ ("				\
-				1:				\
-					sb	r0, %2, r0;	\
-					addik	%0, %0, -1;	\
-					bneid	%0, 1b;		\
-					addik	%2, %2, 1;	\
-				2:				\
-				.section __ex_table,\"a\";	\
-				.word	1b,2b;			\
-				.section .text;"		\
-			: "=r"(size)				\
-			: "0"(size), "r"(to)
-		);
-	}
-	return size;
-}
+#else /* CONFIG_MMU */
 
-#define __copy_from_user(to, from, n)	copy_from_user((to), (from), (n))
+#define put_user(x, ptr)						\
+({									\
+	access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr)))			\
+		? __put_user((x), (ptr)) : -EFAULT;			\
+})
+#endif /* CONFIG_MMU */
+
+/* copy_to_from_user */
+#define __copy_from_user(to, from, n)	\
+	__copy_tofrom_user((__force void __user *)(to), \
+				(void __user *)(from), (n))
 #define __copy_from_user_inatomic(to, from, n) \
 		copy_from_user((to), (from), (n))
 
-#define copy_to_user(to, from, n)					\
-	(access_ok(VERIFY_WRITE, (to), (n)) ?				\
-		__copy_tofrom_user((void __user *)(to),			\
-			(__force const void __user *)(from), (n))	\
-		: -EFAULT)
+static inline long copy_from_user(void *to,
+		const void __user *from, unsigned long n)
+{
+	might_sleep();
+	if (access_ok(VERIFY_READ, from, n))
+		return __copy_from_user(to, from, n);
+	return n;
+}
 
-#define __copy_to_user(to, from, n)	copy_to_user((to), (from), (n))
+#define __copy_to_user(to, from, n)	\
+		__copy_tofrom_user((void __user *)(to), \
+			(__force const void __user *)(from), (n))
 #define __copy_to_user_inatomic(to, from, n)	copy_to_user((to), (from), (n))
 
-#define copy_from_user(to, from, n)					\
-	(access_ok(VERIFY_READ, (from), (n)) ?				\
-		__copy_tofrom_user((__force void __user *)(to),		\
-			(void __user *)(from), (n))			\
-		: -EFAULT)
+static inline long copy_to_user(void __user *to,
+		const void *from, unsigned long n)
+{
+	might_sleep();
+	if (access_ok(VERIFY_WRITE, to, n))
+		return __copy_to_user(to, from, n);
+	return n;
+}
 
+/*
+ * Copy a null terminated string from userspace.
+ */
 extern int __strncpy_user(char *to, const char __user *from, int len);
-extern int __strnlen_user(const char __user *sstr, int len);
 
-#define strncpy_from_user(to, from, len)	\
-		(access_ok(VERIFY_READ, from, 1) ?	\
-			__strncpy_user(to, from, len) : -EFAULT)
-#define strnlen_user(str, len)	\
-		(access_ok(VERIFY_READ, str, 1) ? __strnlen_user(str, len) : 0)
+#define __strncpy_from_user	__strncpy_user
 
-#endif /* CONFIG_MMU */
-
-extern unsigned long __copy_tofrom_user(void __user *to,
-		const void __user *from, unsigned long size);
+static inline long
+strncpy_from_user(char *dst, const char __user *src, long count)
+{
+	if (!access_ok(VERIFY_READ, src, 1))
+		return -EFAULT;
+	return __strncpy_from_user(dst, src, count);
+}
 
 /*
- * The exception table consists of pairs of addresses: the first is the
- * address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue. No registers are
- * modified, so it is entirely up to the continuation code to figure out
- * what to do.
+ * Return the size of a string (including the ending 0)
  *
- * All the routines below use bits of fixup code that are out of line
- * with the main instruction path. This means when everything is well,
- * we don't even have to jump over them. Further, they do not intrude
- * on our cache or tlb entries.
+ * Return 0 on exception, a value greater than N if too long
  */
-struct exception_table_entry {
-	unsigned long insn, fixup;
-};
+extern int __strnlen_user(const char __user *sstr, int len);
+
+static inline long strnlen_user(const char __user *src, long n)
+{
+	if (!access_ok(VERIFY_READ, src, 1))
+		return 0;
+	return __strnlen_user(src, n);
+}
 
 #endif  /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */

arch/microblaze/kernel/dma.c

@@ -37,7 +37,7 @@ static inline void __dma_sync_page(unsigned long paddr, unsigned long offset,
 
 static unsigned long get_dma_direct_offset(struct device *dev)
 {
-	if (dev)
+	if (likely(dev))
 		return (unsigned long)dev->archdata.dma_data;
 
 	return PCI_DRAM_OFFSET; /* FIXME Not sure if is correct */

arch/microblaze/kernel/head.S

@@ -51,6 +51,12 @@ swapper_pg_dir:
 
 	.text
 ENTRY(_start)
+#if CONFIG_KERNEL_BASE_ADDR == 0
+	brai	TOPHYS(real_start)
+	.org	0x100
+real_start:
+#endif
+
 	mfs	r1, rmsr
 	andi	r1, r1, ~2
 	mts	rmsr, r1
@@ -99,8 +105,8 @@ no_fdt_arg:
 	tophys(r4,r4)			/* convert to phys address */
 	ori	r3, r0, COMMAND_LINE_SIZE - 1 /* number of loops */
 _copy_command_line:
-	lbu	r2, r5, r6 /* r7=r5+r6 - r5 contain pointer to command line */
-	sb	r2, r4, r6		/* addr[r4+r6]= r7*/
+	lbu	r2, r5, r6 /* r2=r5+r6 - r5 contain pointer to command line */
+	sb	r2, r4, r6		/* addr[r4+r6]= r2*/
 	addik	r6, r6, 1		/* increment counting */
 	bgtid	r3, _copy_command_line	/* loop for all entries       */
 	addik	r3, r3, -1		/* descrement loop */
@@ -128,7 +134,7 @@ _copy_bram:
 	 * virtual to physical.
 	 */
 	nop
-	addik	r3, r0, 63		/* Invalidate all TLB entries */
+	addik	r3, r0, MICROBLAZE_TLB_SIZE -1	/* Invalidate all TLB entries */
 _invalidate:
 	mts	rtlbx, r3
 	mts	rtlbhi, r0			/* flush: ensure V is clear   */

arch/microblaze/kernel/hw_exception_handler.S

@@ -313,13 +313,13 @@ _hw_exception_handler:
 	mfs	r5, rmsr;
 	nop
 	swi	r5, r1, 0;
-	mfs	r3, resr
+	mfs	r4, resr
 	nop
-	mfs	r4, rear;
+	mfs	r3, rear;
 	nop
 
 #ifndef CONFIG_MMU
-	andi	r5, r3, 0x1000;		/* Check ESR[DS] */
+	andi	r5, r4, 0x1000;		/* Check ESR[DS] */
 	beqi	r5, not_in_delay_slot;	/* Branch if ESR[DS] not set */
 	mfs	r17, rbtr;	/* ESR[DS] set - return address in BTR */
 	nop
@@ -327,13 +327,14 @@ not_in_delay_slot:
 	swi	r17, r1, PT_R17
 #endif
 
-	andi	r5, r3, 0x1F;		/* Extract ESR[EXC] */
+	andi	r5, r4, 0x1F;		/* Extract ESR[EXC] */
 
 #ifdef CONFIG_MMU
 	/* Calculate exception vector offset = r5 << 2 */
 	addk	r6, r5, r5; /* << 1 */
 	addk	r6, r6, r6; /* << 2 */
 
+#ifdef DEBUG
 /* counting which exception happen */
 	lwi	r5, r0, 0x200 + TOPHYS(r0_ram)
 	addi	r5, r5, 1
@@ -341,6 +342,7 @@ not_in_delay_slot:
 	lwi	r5, r6, 0x200 + TOPHYS(r0_ram)
 	addi	r5, r5, 1
 	swi	r5, r6, 0x200 + TOPHYS(r0_ram)
+#endif
 /* end */
 	/* Load the HW Exception vector */
 	lwi	r6, r6, TOPHYS(_MB_HW_ExceptionVectorTable)
@@ -376,7 +378,7 @@ handle_other_ex: /* Handle Other exceptions here */
 	swi	r18, r1, PT_R18
 
 	or	r5, r1, r0
-	andi	r6, r3, 0x1F; /* Load ESR[EC] */
+	andi	r6, r4, 0x1F; /* Load ESR[EC] */
 	lwi	r7, r0, PER_CPU(KM) /* MS: saving current kernel mode to regs */
 	swi	r7, r1, PT_MODE
 	mfs	r7, rfsr
@@ -426,11 +428,11 @@ handle_other_ex: /* Handle Other exceptions here */
  */
 handle_unaligned_ex:
 	/* Working registers already saved: R3, R4, R5, R6
-	 *  R3 = ESR
-	 *  R4 = EAR
+	 *  R4 = ESR
+	 *  R3 = EAR
 	 */
 #ifdef CONFIG_MMU
-	andi	r6, r3, 0x1000			/* Check ESR[DS] */
+	andi	r6, r4, 0x1000			/* Check ESR[DS] */
 	beqi	r6, _no_delayslot		/* Branch if ESR[DS] not set */
 	mfs	r17, rbtr;	/* ESR[DS] set - return address in BTR */
 	nop
@@ -439,7 +441,7 @@ _no_delayslot:
 	RESTORE_STATE;
 	bri	unaligned_data_trap
 #endif
-	andi	r6, r3, 0x3E0; /* Mask and extract the register operand */
+	andi	r6, r4, 0x3E0; /* Mask and extract the register operand */
 	srl	r6, r6; /* r6 >> 5 */
 	srl	r6, r6;
 	srl	r6, r6;
@@ -448,33 +450,33 @@ _no_delayslot:
 	/* Store the register operand in a temporary location */
 	sbi	r6, r0, TOPHYS(ex_reg_op);
 
-	andi	r6, r3, 0x400; /* Extract ESR[S] */
+	andi	r6, r4, 0x400; /* Extract ESR[S] */
 	bnei	r6, ex_sw;
 ex_lw:
-	andi	r6, r3, 0x800; /* Extract ESR[W] */
+	andi	r6, r4, 0x800; /* Extract ESR[W] */
 	beqi	r6, ex_lhw;
-	lbui	r5, r4, 0; /* Exception address in r4 */
+	lbui	r5, r3, 0; /* Exception address in r3 */
 	/* Load a word, byte-by-byte from destination address
 		and save it in tmp space */
 	sbi	r5, r0, TOPHYS(ex_tmp_data_loc_0);
-	lbui	r5, r4, 1;
+	lbui	r5, r3, 1;
 	sbi	r5, r0, TOPHYS(ex_tmp_data_loc_1);
-	lbui	r5, r4, 2;
+	lbui	r5, r3, 2;
 	sbi	r5, r0, TOPHYS(ex_tmp_data_loc_2);
-	lbui	r5, r4, 3;
+	lbui	r5, r3, 3;
 	sbi	r5, r0, TOPHYS(ex_tmp_data_loc_3);
-	/* Get the destination register value into r3 */
-	lwi	r3, r0, TOPHYS(ex_tmp_data_loc_0);
+	/* Get the destination register value into r4 */
+	lwi	r4, r0, TOPHYS(ex_tmp_data_loc_0);
 	bri	ex_lw_tail;
 ex_lhw:
-	lbui	r5, r4, 0; /* Exception address in r4 */
+	lbui	r5, r3, 0; /* Exception address in r3 */
 	/* Load a half-word, byte-by-byte from destination
 		address and save it in tmp space */
 	sbi	r5, r0, TOPHYS(ex_tmp_data_loc_0);
-	lbui	r5, r4, 1;
+	lbui	r5, r3, 1;
 	sbi	r5, r0, TOPHYS(ex_tmp_data_loc_1);
-	/* Get the destination register value into r3 */
-	lhui	r3, r0, TOPHYS(ex_tmp_data_loc_0);
+	/* Get the destination register value into r4 */
+	lhui	r4, r0, TOPHYS(ex_tmp_data_loc_0);
 ex_lw_tail:
 	/* Get the destination register number into r5 */
 	lbui	r5, r0, TOPHYS(ex_reg_op);
@@ -502,25 +504,25 @@ ex_sw_tail:
 	andi	r6, r6, 0x800; /* Extract ESR[W] */
 	beqi	r6, ex_shw;
 	/* Get the word - delay slot */
-	swi	r3, r0, TOPHYS(ex_tmp_data_loc_0);
+	swi	r4, r0, TOPHYS(ex_tmp_data_loc_0);
 	/* Store the word, byte-by-byte into destination address */
-	lbui	r3, r0, TOPHYS(ex_tmp_data_loc_0);
-	sbi	r3, r4, 0;
-	lbui	r3, r0, TOPHYS(ex_tmp_data_loc_1);
-	sbi	r3, r4, 1;
-	lbui	r3, r0, TOPHYS(ex_tmp_data_loc_2);
-	sbi	r3, r4, 2;
-	lbui	r3, r0, TOPHYS(ex_tmp_data_loc_3);
-	sbi	r3, r4, 3;
+	lbui	r4, r0, TOPHYS(ex_tmp_data_loc_0);
+	sbi	r4, r3, 0;
+	lbui	r4, r0, TOPHYS(ex_tmp_data_loc_1);
+	sbi	r4, r3, 1;
+	lbui	r4, r0, TOPHYS(ex_tmp_data_loc_2);
+	sbi	r4, r3, 2;
+	lbui	r4, r0, TOPHYS(ex_tmp_data_loc_3);
+	sbi	r4, r3, 3;
 	bri	ex_handler_done;
 
 ex_shw:
 	/* Store the lower half-word, byte-by-byte into destination address */
-	swi	r3, r0, TOPHYS(ex_tmp_data_loc_0);
-	lbui	r3, r0, TOPHYS(ex_tmp_data_loc_2);
-	sbi	r3, r4, 0;
-	lbui	r3, r0, TOPHYS(ex_tmp_data_loc_3);
-	sbi	r3, r4, 1;
+	swi	r4, r0, TOPHYS(ex_tmp_data_loc_0);
+	lbui	r4, r0, TOPHYS(ex_tmp_data_loc_2);
+	sbi	r4, r3, 0;
+	lbui	r4, r0, TOPHYS(ex_tmp_data_loc_3);
+	sbi	r4, r3, 1;
 ex_sw_end: /* Exception handling of store word, ends. */
 
 ex_handler_done:
@@ -560,21 +562,16 @@ ex_handler_done:
 		 */
 		mfs	r11, rpid
 		nop
-		bri	4
-		mfs	r3, rear		/* Get faulting address */
-		nop
 		/* If we are faulting a kernel address, we have to use the
 		 * kernel page tables.
 		 */
-		ori	r4, r0, CONFIG_KERNEL_START
-		cmpu	r4, r3, r4
-		bgti	r4, ex3
+		ori	r5, r0, CONFIG_KERNEL_START
+		cmpu	r5, r3, r5
+		bgti	r5, ex3
 		/* First, check if it was a zone fault (which means a user
 		 * tried to access a kernel or read-protected page - always
 		 * a SEGV). All other faults here must be stores, so no
 		 * need to check ESR_S as well. */
-		mfs	r4, resr
-		nop
 		andi	r4, r4, 0x800		/* ESR_Z - zone protection */
 		bnei	r4, ex2
 
@@ -589,8 +586,6 @@ ex_handler_done:
 		 * tried to access a kernel or read-protected page - always
 		 * a SEGV). All other faults here must be stores, so no
 		 * need to check ESR_S as well. */
-		mfs	r4, resr
-		nop
 		andi	r4, r4, 0x800		/* ESR_Z */
 		bnei	r4, ex2
 		/* get current task address */
@@ -665,8 +660,6 @@ ex_handler_done:
 		 * R3 = ESR
 		 */
 
-		mfs	r3, rear		/* Get faulting address */
-		nop
 		RESTORE_STATE;
 		bri	page_fault_instr_trap
 
@@ -677,18 +670,15 @@ ex_handler_done:
 	 */
 	handle_data_tlb_miss_exception:
 		/* Working registers already saved: R3, R4, R5, R6
-		 * R3 = ESR
+		 * R3 = EAR, R4 = ESR
 		 */
 		mfs	r11, rpid
 		nop
-		bri	4
-		mfs	r3, rear		/* Get faulting address */
-		nop
 
 		/* If we are faulting a kernel address, we have to use the
 		 * kernel page tables. */
-		ori	r4, r0, CONFIG_KERNEL_START
-		cmpu	r4, r3, r4
+		ori	r6, r0, CONFIG_KERNEL_START
+		cmpu	r4, r3, r6
 		bgti	r4, ex5
 		ori	r4, r0, swapper_pg_dir
 		mts	rpid, r0		/* TLB will have 0 TID */
@@ -731,9 +721,8 @@ ex_handler_done:
 		 * Many of these bits are software only. Bits we don't set
 		 * here we (properly should) assume have the appropriate value.
 		 */
+		brid	finish_tlb_load
 		andni	r4, r4, 0x0ce2		/* Make sure 20, 21 are zero */
-
-		bri	finish_tlb_load
 	ex7:
 		/* The bailout. Restore registers to pre-exception conditions
 		 * and call the heavyweights to help us out.
@@ -754,9 +743,6 @@ ex_handler_done:
 		 */
 		mfs	r11, rpid
 		nop
-		bri	4
-		mfs	r3, rear		/* Get faulting address */
-		nop
 
 		/* If we are faulting a kernel address, we have to use the
 		 * kernel page tables.
@@ -792,7 +778,7 @@ ex_handler_done:
 		lwi	r4, r5, 0		/* Get Linux PTE */
 
 		andi	r6, r4, _PAGE_PRESENT
-		beqi	r6, ex7
+		beqi	r6, ex10
 
 		ori	r4, r4, _PAGE_ACCESSED
 		swi	r4, r5, 0
@@ -805,9 +791,8 @@ ex_handler_done:
 		 * Many of these bits are software only. Bits we don't set
 		 * here we (properly should) assume have the appropriate value.
 		 */
+		brid	finish_tlb_load
 		andni	r4, r4, 0x0ce2		/* Make sure 20, 21 are zero */
-
-		bri	finish_tlb_load
 	ex10:
 		/* The bailout. Restore registers to pre-exception conditions
 		 * and call the heavyweights to help us out.
@@ -837,9 +822,9 @@ ex_handler_done:
 		andi	r5, r5, (MICROBLAZE_TLB_SIZE-1)
 		ori	r6, r0, 1
 		cmp	r31, r5, r6
-		blti	r31, sem
+		blti	r31, ex12
 		addik	r5, r6, 1
-	sem:
+	ex12:
 		/* MS: save back current TLB index */
 		swi	r5, r0, TOPHYS(tlb_index)
 
@@ -859,7 +844,6 @@ ex_handler_done:
 		nop
 
 		/* Done...restore registers and get out of here. */
-	ex12:
 		mts	rpid, r11
 		nop
 		bri 4

arch/microblaze/kernel/misc.S

@@ -26,9 +26,10 @@
  * We avoid flushing the pinned 0, 1 and possibly 2 entries.
  */
 .globl _tlbia;
+.type  _tlbia, @function
 .align 4;
 _tlbia:
-	addik	r12, r0, 63 /* flush all entries (63 - 3) */
+	addik	r12, r0, MICROBLAZE_TLB_SIZE - 1 /* flush all entries (63 - 3) */
 	/* isync */
 _tlbia_1:
 	mts	rtlbx, r12
@@ -41,11 +42,13 @@ _tlbia_1:
 	/* sync */
 	rtsd	r15, 8
 	nop
+	.size  _tlbia, . - _tlbia
 
 /*
  * Flush MMU TLB for a particular address (in r5)
  */
 .globl _tlbie;
+.type  _tlbie, @function
 .align 4;
 _tlbie:
 	mts	rtlbsx, r5 /* look up the address in TLB */
@@ -59,17 +62,20 @@ _tlbie_1:
 	rtsd	r15, 8
 	nop
 
+	.size  _tlbie, . - _tlbie
+
 /*
  * Allocate TLB entry for early console
  */
 .globl early_console_reg_tlb_alloc;
+.type  early_console_reg_tlb_alloc, @function
 .align 4;
 early_console_reg_tlb_alloc:
 	/*
 	 * Load a TLB entry for the UART, so that microblaze_progress() can use
 	 * the UARTs nice and early.  We use a 4k real==virtual mapping.
 	 */
-	ori	r4, r0, 63
+	ori	r4, r0, MICROBLAZE_TLB_SIZE - 1
 	mts	rtlbx, r4 /* TLB slot 2 */
 
 	or	r4,r5,r0
@@ -86,6 +92,8 @@ early_console_reg_tlb_alloc:
 	rtsd	r15, 8
 	nop
 
+	.size  early_console_reg_tlb_alloc, . - early_console_reg_tlb_alloc
+
 /*
  * Copy a whole page (4096 bytes).
  */
@@ -104,6 +112,7 @@ early_console_reg_tlb_alloc:
 #define DCACHE_LINE_BYTES (4 * 4)
 
 .globl copy_page;
+.type  copy_page, @function
 .align 4;
 copy_page:
 	ori	r11, r0, (PAGE_SIZE/DCACHE_LINE_BYTES) - 1
@@ -118,3 +127,5 @@ _copy_page_loop:
 	addik	r11, r11, -1
 	rtsd	r15, 8
 	nop
+
+	.size  copy_page, . - copy_page

arch/microblaze/kernel/process.c

@@ -15,6 +15,7 @@
 #include <linux/bitops.h>
 #include <asm/system.h>
 #include <asm/pgalloc.h>
+#include <asm/uaccess.h> /* for USER_DS macros */
 #include <asm/cacheflush.h>
 
 void show_regs(struct pt_regs *regs)
@@ -74,7 +75,10 @@ __setup("hlt", hlt_setup);
 
 void default_idle(void)
 {
-	if (!hlt_counter) {
+	if (likely(hlt_counter)) {
+		while (!need_resched())
+			cpu_relax();
+	} else {
 		clear_thread_flag(TIF_POLLING_NRFLAG);
 		smp_mb__after_clear_bit();
 		local_irq_disable();
@@ -82,9 +86,7 @@ void default_idle(void)
 			cpu_sleep();
 		local_irq_enable();
 		set_thread_flag(TIF_POLLING_NRFLAG);
-	} else
-		while (!need_resched())
-			cpu_relax();
+	}
 }
 
 void cpu_idle(void)

arch/microblaze/kernel/setup.c

@@ -92,6 +92,12 @@ inline unsigned get_romfs_len(unsigned *addr)
 }
 #endif	/* CONFIG_MTD_UCLINUX_EBSS */
 
+#if defined(CONFIG_EARLY_PRINTK) && defined(CONFIG_SERIAL_UARTLITE_CONSOLE)
+#define eprintk early_printk
+#else
+#define eprintk printk
+#endif
+
 void __init machine_early_init(const char *cmdline, unsigned int ram,
 		unsigned int fdt, unsigned int msr)
 {
@@ -139,32 +145,32 @@ void __init machine_early_init(const char *cmdline, unsigned int ram,
 	setup_early_printk(NULL);
 #endif
 
-	early_printk("Ramdisk addr 0x%08x, ", ram);
+	eprintk("Ramdisk addr 0x%08x, ", ram);
 	if (fdt)
-		early_printk("FDT at 0x%08x\n", fdt);
+		eprintk("FDT at 0x%08x\n", fdt);
 	else
-		early_printk("Compiled-in FDT at 0x%08x\n",
+		eprintk("Compiled-in FDT at 0x%08x\n",
 					(unsigned int)_fdt_start);
 
 #ifdef CONFIG_MTD_UCLINUX
-	early_printk("Found romfs @ 0x%08x (0x%08x)\n",
+	eprintk("Found romfs @ 0x%08x (0x%08x)\n",
 			romfs_base, romfs_size);
-	early_printk("#### klimit %p ####\n", old_klimit);
+	eprintk("#### klimit %p ####\n", old_klimit);
 	BUG_ON(romfs_size < 0); /* What else can we do? */
 
-	early_printk("Moved 0x%08x bytes from 0x%08x to 0x%08x\n",
+	eprintk("Moved 0x%08x bytes from 0x%08x to 0x%08x\n",
 			romfs_size, romfs_base, (unsigned)&_ebss);
 
-	early_printk("New klimit: 0x%08x\n", (unsigned)klimit);
+	eprintk("New klimit: 0x%08x\n", (unsigned)klimit);
 #endif
 
 #if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
 	if (msr)
-		early_printk("!!!Your kernel has setup MSR instruction but "
+		eprintk("!!!Your kernel has setup MSR instruction but "
 				"CPU don't have it %d\n", msr);
 #else
 	if (!msr)
-		early_printk("!!!Your kernel not setup MSR instruction but "
+		eprintk("!!!Your kernel not setup MSR instruction but "
 				"CPU have it %d\n", msr);
 #endif
 

arch/microblaze/kernel/traps.c

@@ -22,13 +22,11 @@ void trap_init(void)
 	__enable_hw_exceptions();
 }
 
-static int kstack_depth_to_print = 24;
+static unsigned long kstack_depth_to_print = 24;
 
 static int __init kstack_setup(char *s)
 {
-	kstack_depth_to_print = strict_strtoul(s, 0, NULL);
-
-	return 1;
+	return !strict_strtoul(s, 0, &kstack_depth_to_print);
 }
 __setup("kstack=", kstack_setup);
 

arch/microblaze/lib/Makefile

@@ -10,5 +10,4 @@ else
 lib-y += memcpy.o memmove.o
 endif
 
-lib-$(CONFIG_NO_MMU) += uaccess.o
-lib-$(CONFIG_MMU) += uaccess_old.o
+lib-y += uaccess_old.o

arch/microblaze/lib/fastcopy.S

@@ -30,8 +30,9 @@
  */
 
 #include <linux/linkage.h>
-
+	.text
 	.globl	memcpy
+	.type  memcpy, @function
 	.ent	memcpy
 
 memcpy:
@@ -345,9 +346,11 @@ a_done:
 	rtsd	r15, 8
 	nop
 
+.size  memcpy, . - memcpy
 .end memcpy
 /*----------------------------------------------------------------------------*/
 	.globl	memmove
+	.type  memmove, @function
 	.ent	memmove
 
 memmove:
@@ -659,4 +662,5 @@ d_done:
 	rtsd	r15, 8
 	nop
 
+.size  memmove, . - memmove
 .end memmove

arch/microblaze/lib/memcpy.c

@@ -53,7 +53,7 @@ void *memcpy(void *v_dst, const void *v_src, __kernel_size_t c)
 	const uint32_t *i_src;
 	uint32_t *i_dst;
 
-	if (c >= 4) {
+	if (likely(c >= 4)) {
 		unsigned  value, buf_hold;
 
 		/* Align the dstination to a word boundry. */

arch/microblaze/lib/memset.c

@@ -33,22 +33,23 @@
 #ifdef __HAVE_ARCH_MEMSET
 void *memset(void *v_src, int c, __kernel_size_t n)
 {
-
 	char *src = v_src;
 #ifdef CONFIG_OPT_LIB_FUNCTION
 	uint32_t *i_src;
-	uint32_t w32;
+	uint32_t w32 = 0;
 #endif
 	/* Truncate c to 8 bits */
 	c = (c & 0xFF);
 
 #ifdef CONFIG_OPT_LIB_FUNCTION
-	/* Make a repeating word out of it */
-	w32 = c;
-	w32 |= w32 << 8;
-	w32 |= w32 << 16;
+	if (unlikely(c)) {
+		/* Make a repeating word out of it */
+		w32 = c;
+		w32 |= w32 << 8;
+		w32 |= w32 << 16;
+	}
 
-	if (n >= 4) {
+	if (likely(n >= 4)) {
 		/* Align the destination to a word boundary */
 		/* This is done in an endian independant manner */
 		switch ((unsigned) src & 3) {

arch/microblaze/lib/uaccess.c

@@ -1,48 +0,0 @@
-/*
- * Copyright (C) 2006 Atmark Techno, Inc.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#include <linux/string.h>
-#include <asm/uaccess.h>
-
-#include <asm/bug.h>
-
-long strnlen_user(const char __user *src, long count)
-{
-	return strlen(src) + 1;
-}
-
-#define __do_strncpy_from_user(dst, src, count, res)			\
-	do {								\
-		char *tmp;						\
-		strncpy(dst, src, count);				\
-		for (tmp = dst; *tmp && count > 0; tmp++, count--)	\
-			;						\
-		res = (tmp - dst);					\
-	} while (0)
-
-long __strncpy_from_user(char *dst, const char __user *src, long count)
-{
-	long res;
-	__do_strncpy_from_user(dst, src, count, res);
-	return res;
-}
-
-long strncpy_from_user(char *dst, const char __user *src, long count)
-{
-	long res = -EFAULT;
-	if (access_ok(VERIFY_READ, src, 1))
-		__do_strncpy_from_user(dst, src, count, res);
-	return res;
-}
-
-unsigned long __copy_tofrom_user(void __user *to,
-		const void __user *from, unsigned long size)
-{
-	memcpy(to, from, size);
-	return 0;
-}

arch/microblaze/lib/uaccess_old.S

@@ -22,6 +22,7 @@
 
 	.text
 .globl __strncpy_user;
+.type  __strncpy_user, @function
 .align 4;
 __strncpy_user:
 
@@ -50,7 +51,7 @@ __strncpy_user:
 3:
 	rtsd	r15,8
 	nop
-
+	.size   __strncpy_user, . - __strncpy_user
 
 	.section	.fixup, "ax"
 	.align	2
@@ -72,6 +73,7 @@ __strncpy_user:
 
 	.text
 .globl __strnlen_user;
+.type  __strnlen_user, @function
 .align 4;
 __strnlen_user:
 	addik	r3,r6,0
@@ -90,7 +92,7 @@ __strnlen_user:
 3:
 	rtsd	r15,8
 	nop
-
+	.size   __strnlen_user, . - __strnlen_user
 
 	.section	.fixup,"ax"
 4:
@@ -108,6 +110,7 @@ __strnlen_user:
  */
 	.text
 .globl __copy_tofrom_user;
+.type  __copy_tofrom_user, @function
 .align 4;
 __copy_tofrom_user:
 	/*
@@ -116,20 +119,34 @@ __copy_tofrom_user:
 	 * r7, r3 - count
 	 * r4 - tempval
 	 */
-	addik	r3,r7,0
-	beqi	r3,3f
-1:
-	lbu	r4,r6,r0
-	addik	r6,r6,1
-2:
-	sb	r4,r5,r0
-	addik	r3,r3,-1
-	bneid	r3,1b
-	addik	r5,r5,1		/* delay slot */
+	beqid	r7, 3f /* zero size is not likely */
+	andi	r3, r7, 0x3 /* filter add count */
+	bneid	r3, 4f /* if is odd value then byte copying */
+	or	r3, r5, r6 /* find if is any to/from unaligned */
+	andi	r3, r3, 0x3 /* mask unaligned */
+	bneid	r3, 1f /* it is unaligned -> then jump */
+	or	r3, r0, r0
+
+/* at least one 4 byte copy */
+5:	lw	r4, r6, r3
+6:	sw	r4, r5, r3
+	addik	r7, r7, -4
+	bneid	r7, 5b
+	addik	r3, r3, 4
+	addik	r3, r7, 0
+	rtsd	r15, 8
+	nop
+4:	or	r3, r0, r0
+1:	lbu	r4,r6,r3
+2:	sb	r4,r5,r3
+	addik	r7,r7,-1
+	bneid	r7,1b
+	addik	r3,r3,1		/* delay slot */
 3:
+	addik	r3,r7,0
 	rtsd	r15,8
 	nop
-
+	.size   __copy_tofrom_user, . - __copy_tofrom_user
 
 	.section	__ex_table,"a"
-	.word	1b,3b,2b,3b
+	.word	1b,3b,2b,3b,5b,3b,6b,3b

arch/microblaze/mm/fault.c

@@ -106,7 +106,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 	regs->esr = error_code;
 
 	/* On a kernel SLB miss we can only check for a valid exception entry */
-	if (kernel_mode(regs) && (address >= TASK_SIZE)) {
+	if (unlikely(kernel_mode(regs) && (address >= TASK_SIZE))) {
 		printk(KERN_WARNING "kernel task_size exceed");
 		_exception(SIGSEGV, regs, code, address);
 	}
@@ -122,7 +122,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 	}
 #endif /* CONFIG_KGDB */
 
-	if (in_atomic() || !mm) {
+	if (unlikely(in_atomic() || !mm)) {
 		if (kernel_mode(regs))
 			goto bad_area_nosemaphore;
 
@@ -150,7 +150,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 	 * source.  If this is invalid we can skip the address space check,
 	 * thus avoiding the deadlock.
 	 */
-	if (!down_read_trylock(&mm->mmap_sem)) {
+	if (unlikely(!down_read_trylock(&mm->mmap_sem))) {
 		if (kernel_mode(regs) && !search_exception_tables(regs->pc))
 			goto bad_area_nosemaphore;
 
@@ -158,16 +158,16 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 	}
 
 	vma = find_vma(mm, address);
-	if (!vma)
+	if (unlikely(!vma))
 		goto bad_area;
 
 	if (vma->vm_start <= address)
 		goto good_area;
 
-	if (!(vma->vm_flags & VM_GROWSDOWN))
+	if (unlikely(!(vma->vm_flags & VM_GROWSDOWN)))
 		goto bad_area;
 
-	if (!is_write)
+	if (unlikely(!is_write))
 		goto bad_area;
 
 	/*
@@ -179,7 +179,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 	 * before setting the user r1.  Thus we allow the stack to
 	 * expand to 1MB without further checks.
 	 */
-	if (address + 0x100000 < vma->vm_end) {
+	if (unlikely(address + 0x100000 < vma->vm_end)) {
 
 		/* get user regs even if this fault is in kernel mode */
 		struct pt_regs *uregs = current->thread.regs;
@@ -209,15 +209,15 @@ good_area:
 	code = SEGV_ACCERR;
 
 	/* a write */
-	if (is_write) {
-		if (!(vma->vm_flags & VM_WRITE))
+	if (unlikely(is_write)) {
+		if (unlikely(!(vma->vm_flags & VM_WRITE)))
 			goto bad_area;
 	/* a read */
 	} else {
 		/* protection fault */
-		if (error_code & 0x08000000)
+		if (unlikely(error_code & 0x08000000))
 			goto bad_area;
-		if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
+		if (unlikely(!(vma->vm_flags & (VM_READ | VM_EXEC))))
 			goto bad_area;
 	}
 
@@ -235,7 +235,7 @@ survive:
 			goto do_sigbus;
 		BUG();
 	}
-	if (fault & VM_FAULT_MAJOR)
+	if (unlikely(fault & VM_FAULT_MAJOR))
 		current->maj_flt++;
 	else
 		current->min_flt++;

arch/microblaze/mm/init.c

@@ -165,7 +165,6 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
 	for (addr = begin; addr < end; addr += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(addr));
 		init_page_count(virt_to_page(addr));
-		memset((void *)addr, 0xcc, PAGE_SIZE);
 		free_page(addr);
 		totalram_pages++;
 	}
@@ -208,14 +207,6 @@ void __init mem_init(void)
 }
 
 #ifndef CONFIG_MMU
-/* Check against bounds of physical memory */
-int ___range_ok(unsigned long addr, unsigned long size)
-{
-	return ((addr < memory_start) ||
-		((addr + size) > memory_end));
-}
-EXPORT_SYMBOL(___range_ok);
-
 int page_is_ram(unsigned long pfn)
 {
 	return __range_ok(pfn, 0);

arch/microblaze/mm/pgtable.c

@@ -154,7 +154,7 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
 		err = 0;
 		set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT,
 				__pgprot(flags)));
-		if (mem_init_done)
+		if (unlikely(mem_init_done))
 			flush_HPTE(0, va, pmd_val(*pd));
 			/* flush_HPTE(0, va, pg); */
 	}

arch/powerpc/include/asm/asm-compat.h

@@ -28,6 +28,7 @@
 #define PPC_LLARX(t, a, b, eh)	PPC_LDARX(t, a, b, eh)
 #define PPC_STLCX	stringify_in_c(stdcx.)
 #define PPC_CNTLZL	stringify_in_c(cntlzd)
+#define PPC_LR_STKOFF	16
 
 /* Move to CR, single-entry optimized version. Only available
  * on POWER4 and later.
@@ -51,6 +52,7 @@
 #define PPC_STLCX	stringify_in_c(stwcx.)
 #define PPC_CNTLZL	stringify_in_c(cntlzw)
 #define PPC_MTOCRF	stringify_in_c(mtcrf)
+#define PPC_LR_STKOFF	4
 
 #endif
 

arch/powerpc/kernel/misc.S

@@ -127,3 +127,31 @@ _GLOBAL(__setup_cpu_power7)
 _GLOBAL(__restore_cpu_power7)
 	/* place holder */
 	blr
+
+#ifdef CONFIG_EVENT_TRACING
+/*
+ * Get a minimal set of registers for our caller's nth caller.
+ * r3 = regs pointer, r5 = n.
+ *
+ * We only get R1 (stack pointer), NIP (next instruction pointer)
+ * and LR (link register).  These are all we can get in the
+ * general case without doing complicated stack unwinding, but
+ * fortunately they are enough to do a stack backtrace, which
+ * is all we need them for.
+ */
+_GLOBAL(perf_arch_fetch_caller_regs)
+	mr	r6,r1
+	cmpwi	r5,0
+	mflr	r4
+	ble	2f
+	mtctr	r5
+1:	PPC_LL	r6,0(r6)
+	bdnz	1b
+	PPC_LL	r4,PPC_LR_STKOFF(r6)
+2:	PPC_LL	r7,0(r6)
+	PPC_LL	r7,PPC_LR_STKOFF(r7)
+	PPC_STL	r6,GPR1-STACK_FRAME_OVERHEAD(r3)
+	PPC_STL	r4,_NIP-STACK_FRAME_OVERHEAD(r3)
+	PPC_STL	r7,_LINK-STACK_FRAME_OVERHEAD(r3)
+	blr
+#endif /* CONFIG_EVENT_TRACING */

arch/s390/boot/compressed/misc.c

@@ -24,8 +24,8 @@
 /* Symbols defined by linker scripts */
 extern char input_data[];
 extern int input_len;
-extern int _text;
-extern int _end;
+extern char _text, _end;
+extern char _bss, _ebss;
 
 static void error(char *m);
 
@@ -129,12 +129,12 @@ unsigned long decompress_kernel(void)
 	unsigned long output_addr;
 	unsigned char *output;
 
+	check_ipl_parmblock((void *) 0, (unsigned long) output + SZ__bss_start);
+	memset(&_bss, 0, &_ebss - &_bss);
 	free_mem_ptr = (unsigned long)&_end;
 	free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
 	output = (unsigned char *) ((free_mem_end_ptr + 4095UL) & -4096UL);
 
-	check_ipl_parmblock((void *) 0, (unsigned long) output + SZ__bss_start);
-
 #ifdef CONFIG_BLK_DEV_INITRD
 	/*
 	 * Move the initrd right behind the end of the decompressed

arch/s390/include/asm/system.h

@@ -110,6 +110,7 @@ extern void pfault_fini(void);
 #endif /* CONFIG_PFAULT */
 
 extern void cmma_init(void);
+extern int memcpy_real(void *, void *, size_t);
 
 #define finish_arch_switch(prev) do {					     \
 	set_fs(current->thread.mm_segment);				     \
@@ -218,8 +219,8 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 			"	l	%0,%2\n"
 			"0:	nr	%0,%5\n"
 			"	lr	%1,%0\n"
-			"	or	%0,%2\n"
-			"	or	%1,%3\n"
+			"	or	%0,%3\n"
+			"	or	%1,%4\n"
 			"	cs	%0,%1,%2\n"
 			"	jnl	1f\n"
 			"	xr	%1,%0\n"
@@ -239,8 +240,8 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 			"	l	%0,%2\n"
 			"0:	nr	%0,%5\n"
 			"	lr	%1,%0\n"
-			"	or	%0,%2\n"
-			"	or	%1,%3\n"
+			"	or	%0,%3\n"
+			"	or	%1,%4\n"
 			"	cs	%0,%1,%2\n"
 			"	jnl	1f\n"
 			"	xr	%1,%0\n"

arch/s390/kernel/head.S

@@ -517,7 +517,10 @@ startup:
 	lhi	%r1,2			# mode 2 = esame (dump)
 	sigp	%r1,%r0,0x12		# switch to esame mode
 	sam64				# switch to 64 bit mode
+	larl	%r13,4f
+	lmh	%r0,%r15,0(%r13)	# clear high-order half
 	jg	startup_continue
+4:	.fill	16,4,0x0
 #else
 	mvi	__LC_AR_MODE_ID,0	# set ESA flag (mode 0)
 	l	%r13,4f-.LPG0(%r13)

arch/s390/kernel/head64.S

@@ -21,7 +21,6 @@ startup_continue:
 	larl	%r1,sched_clock_base_cc
 	mvc	0(8,%r1),__LC_LAST_UPDATE_CLOCK
 	larl	%r13,.LPG1		# get base
-	lmh	%r0,%r15,.Lzero64-.LPG1(%r13)	# clear high-order half
 	lctlg	%c0,%c15,.Lctl-.LPG1(%r13)	# load control registers
 	lg	%r12,.Lparmaddr-.LPG1(%r13)	# pointer to parameter area
 					# move IPL device to lowcore
@@ -67,7 +66,6 @@ startup_continue:
 .L4malign:.quad 0xffffffffffc00000
 .Lscan2g:.quad	0x80000000 + 0x20000 - 8	# 2GB + 128K - 8
 .Lnop:	.long	0x07000700
-.Lzero64:.fill	16,4,0x0
 .Lparmaddr:
 	.quad	PARMAREA
 	.align	64

arch/s390/kernel/setup.c

@@ -401,7 +401,7 @@ setup_lowcore(void)
 	 * Setup lowcore for boot cpu
 	 */
 	BUILD_BUG_ON(sizeof(struct _lowcore) != LC_PAGES * 4096);
-	lc = __alloc_bootmem(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0);
+	lc = __alloc_bootmem_low(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0);
 	lc->restart_psw.mask = PSW_BASE_BITS | PSW_DEFAULT_KEY;
 	lc->restart_psw.addr =
 		PSW_ADDR_AMODE | (unsigned long) restart_int_handler;
@@ -433,7 +433,7 @@ setup_lowcore(void)
 #ifndef CONFIG_64BIT
 	if (MACHINE_HAS_IEEE) {
 		lc->extended_save_area_addr = (__u32)
-			__alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0);
+			__alloc_bootmem_low(PAGE_SIZE, PAGE_SIZE, 0);
 		/* enable extended save area */
 		__ctl_set_bit(14, 29);
 	}

arch/s390/kernel/smp.c

@@ -292,9 +292,9 @@ static void __init smp_get_save_area(unsigned int cpu, unsigned int phy_cpu)
 	zfcpdump_save_areas[cpu] = kmalloc(sizeof(struct save_area), GFP_KERNEL);
 	while (raw_sigp(phy_cpu, sigp_stop_and_store_status) == sigp_busy)
 		cpu_relax();
-	memcpy(zfcpdump_save_areas[cpu],
-	       (void *)(unsigned long) store_prefix() + SAVE_AREA_BASE,
-	       sizeof(struct save_area));
+	memcpy_real(zfcpdump_save_areas[cpu],
+		    (void *)(unsigned long) store_prefix() + SAVE_AREA_BASE,
+		    sizeof(struct save_area));
 }
 
 struct save_area *zfcpdump_save_areas[NR_CPUS + 1];

arch/s390/mm/maccess.c

@@ -59,3 +59,29 @@ long probe_kernel_write(void *dst, void *src, size_t size)
 	}
 	return copied < 0 ? -EFAULT : 0;
 }
+
+int memcpy_real(void *dest, void *src, size_t count)
+{
+	register unsigned long _dest asm("2") = (unsigned long) dest;
+	register unsigned long _len1 asm("3") = (unsigned long) count;
+	register unsigned long _src  asm("4") = (unsigned long) src;
+	register unsigned long _len2 asm("5") = (unsigned long) count;
+	unsigned long flags;
+	int rc = -EFAULT;
+
+	if (!count)
+		return 0;
+	flags = __raw_local_irq_stnsm(0xf8UL);
+	asm volatile (
+		"0:	mvcle	%1,%2,0x0\n"
+		"1:	jo	0b\n"
+		"	lhi	%0,0x0\n"
+		"2:\n"
+		EX_TABLE(1b,2b)
+		: "+d" (rc), "+d" (_dest), "+d" (_src), "+d" (_len1),
+		  "+d" (_len2), "=m" (*((long *) dest))
+		: "m" (*((long *) src))
+		: "cc", "memory");
+	__raw_local_irq_ssm(flags);
+	return rc;
+}

arch/sh/boards/mach-ecovec24/setup.c

@@ -836,6 +836,8 @@ static void __init sh_eth_init(struct sh_eth_plat_data *pd)
 		pd->mac_addr[i] = mac_read(a, 0x10 + i);
 		msleep(10);
 	}
+
+	i2c_put_adapter(a);
 }
 #else
 static void __init sh_eth_init(struct sh_eth_plat_data *pd)

arch/sh/boards/mach-se/7724/setup.c

@@ -52,6 +52,13 @@
  * and change SW41 to use 720p
  */
 
+/*
+ * about sound
+ *
+ * This setup.c supports FSI slave mode.
+ * Please change J20, J21, J22 pin to 1-2 connection.
+ */
+
 /* Heartbeat */
 static struct resource heartbeat_resource = {
 	.start  = PA_LED,
@@ -276,6 +283,7 @@ static struct clk fsimcka_clk = {
 	.rate		= 0, /* unknown */
 };
 
+/* change J20, J21, J22 pin to 1-2 connection to use slave mode */
 struct sh_fsi_platform_info fsi_info = {
 	.porta_flags = SH_FSI_BRS_INV |
 		       SH_FSI_OUT_SLAVE_MODE |

arch/sh/include/cpu-sh4/cpu/mmu_context.h

@@ -19,6 +19,8 @@
 
 #define MMUCR		0xFF000010	/* MMU Control Register */
 
+#define MMU_ITLB_ADDRESS_ARRAY  0xF2000000
+#define MMU_ITLB_ADDRESS_ARRAY2	0xF2800000
 #define MMU_UTLB_ADDRESS_ARRAY	0xF6000000
 #define MMU_UTLB_ADDRESS_ARRAY2	0xF6800000
 #define MMU_PAGE_ASSOC_BIT	0x80

arch/sh/include/cpu-sh4/cpu/watchdog.h

@@ -21,6 +21,12 @@
 #define WTCNT		0xffcc0000 /*WDTST*/
 #define WTST		WTCNT
 #define WTBST		0xffcc0008 /*WDTBST*/
+/* Register definitions */
+#elif	defined(CONFIG_CPU_SUBTYPE_SH7722) || \
+	defined(CONFIG_CPU_SUBTYPE_SH7723) || \
+	defined(CONFIG_CPU_SUBTYPE_SH7724)
+#define WTCNT		0xa4520000
+#define WTCSR		0xa4520004
 #else
 /* Register definitions */
 #define WTCNT		0xffc00008

arch/sh/kernel/dwarf.c

@@ -727,7 +727,7 @@ static int dwarf_parse_cie(void *entry, void *p, unsigned long len,
 			   unsigned char *end, struct module *mod)
 {
 	struct rb_node **rb_node = &cie_root.rb_node;
-	struct rb_node *parent;
+	struct rb_node *parent = *rb_node;
 	struct dwarf_cie *cie;
 	unsigned long flags;
 	int count;
@@ -856,7 +856,7 @@ static int dwarf_parse_fde(void *entry, u32 entry_type,
 			   unsigned char *end, struct module *mod)
 {
 	struct rb_node **rb_node = &fde_root.rb_node;
-	struct rb_node *parent;
+	struct rb_node *parent = *rb_node;
 	struct dwarf_fde *fde;
 	struct dwarf_cie *cie;
 	unsigned long flags;

arch/sh/kernel/idle.c

@@ -112,7 +112,7 @@ void cpu_idle(void)
 	}
 }
 
-void __cpuinit select_idle_routine(void)
+void __init select_idle_routine(void)
 {
 	/*
 	 * If a platform has set its own idle routine, leave it alone.

arch/sh/kernel/perf_event.c

@@ -315,7 +315,7 @@ void hw_perf_disable(void)
 	sh_pmu->disable_all();
 }
 
-int register_sh_pmu(struct sh_pmu *pmu)
+int __cpuinit register_sh_pmu(struct sh_pmu *pmu)
 {
 	if (sh_pmu)
 		return -EBUSY;

arch/sh/kernel/process_64.c

@@ -504,13 +504,6 @@ out:
 	return error;
 }
 
-/*
- * These bracket the sleeping functions..
- */
-extern void interruptible_sleep_on(wait_queue_head_t *q);
-
-#define mid_sched	((unsigned long) interruptible_sleep_on)
-
 #ifdef CONFIG_FRAME_POINTER
 static int in_sh64_switch_to(unsigned long pc)
 {

arch/sh/mm/pmb.c

@@ -323,6 +323,7 @@ static void __clear_pmb_entry(struct pmb_entry *pmbe)
 	writel_uncached(data_val & ~PMB_V, data);
 }
 
+#ifdef CONFIG_PM
 static void set_pmb_entry(struct pmb_entry *pmbe)
 {
 	unsigned long flags;
@@ -331,6 +332,7 @@ static void set_pmb_entry(struct pmb_entry *pmbe)
 	__set_pmb_entry(pmbe);
 	spin_unlock_irqrestore(&pmbe->lock, flags);
 }
+#endif /* CONFIG_PM */
 
 int pmb_bolt_mapping(unsigned long vaddr, phys_addr_t phys,
 		     unsigned long size, pgprot_t prot)
@@ -802,7 +804,7 @@ void __init pmb_init(void)
 	writel_uncached(0, PMB_IRMCR);
 
 	/* Flush out the TLB */
-	__raw_writel(__raw_readl(MMUCR) | MMUCR_TI, MMUCR);
+	local_flush_tlb_all();
 	ctrl_barrier();
 }
 

arch/sh/mm/tlb-pteaex.c

@@ -73,5 +73,7 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
 	jump_to_uncached();
 	__raw_writel(page, MMU_UTLB_ADDRESS_ARRAY | MMU_PAGE_ASSOC_BIT);
 	__raw_writel(asid, MMU_UTLB_ADDRESS_ARRAY2 | MMU_PAGE_ASSOC_BIT);
+	__raw_writel(page, MMU_ITLB_ADDRESS_ARRAY | MMU_PAGE_ASSOC_BIT);
+	__raw_writel(asid, MMU_ITLB_ADDRESS_ARRAY2 | MMU_PAGE_ASSOC_BIT);
 	back_to_cached();
 }

arch/sh/mm/tlbflush_32.c

@@ -123,18 +123,27 @@ void local_flush_tlb_mm(struct mm_struct *mm)
 void local_flush_tlb_all(void)
 {
 	unsigned long flags, status;
+	int i;
 
 	/*
 	 * Flush all the TLB.
-	 *
-	 * Write to the MMU control register's bit:
-	 *	TF-bit for SH-3, TI-bit for SH-4.
-	 *      It's same position, bit #2.
 	 */
 	local_irq_save(flags);
+	jump_to_uncached();
+
 	status = __raw_readl(MMUCR);
-	status |= 0x04;
-	__raw_writel(status, MMUCR);
+	status = ((status & MMUCR_URB) >> MMUCR_URB_SHIFT);
+
+	if (status == 0)
+		status = MMUCR_URB_NENTRIES;
+
+	for (i = 0; i < status; i++)
+		__raw_writel(0x0, MMU_UTLB_ADDRESS_ARRAY | (i << 8));
+
+	for (i = 0; i < 4; i++)
+		__raw_writel(0x0, MMU_ITLB_ADDRESS_ARRAY | (i << 8));
+
+	back_to_cached();
 	ctrl_barrier();
 	local_irq_restore(flags);
 }

arch/sparc/include/asm/stat.h

@@ -53,8 +53,8 @@ struct stat {
 	ino_t		st_ino;
 	mode_t		st_mode;
 	short		st_nlink;
-	uid16_t		st_uid;
-	gid16_t		st_gid;
+	unsigned short	st_uid;
+	unsigned short	st_gid;
 	unsigned short	st_rdev;
 	off_t		st_size;
 	time_t		st_atime;

arch/sparc/kernel/perf_event.c

@@ -1337,7 +1337,7 @@ static void perf_callchain_user_32(struct pt_regs *regs,
 	callchain_store(entry, PERF_CONTEXT_USER);
 	callchain_store(entry, regs->tpc);
 
-	ufp = regs->u_regs[UREG_I6];
+	ufp = regs->u_regs[UREG_I6] & 0xffffffffUL;
 	do {
 		struct sparc_stackf32 *usf, sf;
 		unsigned long pc;

arch/sparc/kernel/sysfs.c

@@ -107,12 +107,12 @@ static unsigned long run_on_cpu(unsigned long cpu,
 	unsigned long ret;
 
 	/* should return -EINVAL to userspace */
-	if (set_cpus_allowed(current, cpumask_of_cpu(cpu)))
+	if (set_cpus_allowed_ptr(current, cpumask_of(cpu)))
 		return 0;
 
 	ret = func(arg);
 
-	set_cpus_allowed(current, old_affinity);
+	set_cpus_allowed_ptr(current, &old_affinity);
 
 	return ret;
 }

arch/sparc/kernel/us2e_cpufreq.c

@@ -238,12 +238,12 @@ static unsigned int us2e_freq_get(unsigned int cpu)
 		return 0;
 
 	cpus_allowed = current->cpus_allowed;
-	set_cpus_allowed(current, cpumask_of_cpu(cpu));
+	set_cpus_allowed_ptr(current, cpumask_of(cpu));
 
 	clock_tick = sparc64_get_clock_tick(cpu) / 1000;
 	estar = read_hbreg(HBIRD_ESTAR_MODE_ADDR);
 
-	set_cpus_allowed(current, cpus_allowed);
+	set_cpus_allowed_ptr(current, &cpus_allowed);
 
 	return clock_tick / estar_to_divisor(estar);
 }
@@ -259,7 +259,7 @@ static void us2e_set_cpu_divider_index(unsigned int cpu, unsigned int index)
 		return;
 
 	cpus_allowed = current->cpus_allowed;
-	set_cpus_allowed(current, cpumask_of_cpu(cpu));
+	set_cpus_allowed_ptr(current, cpumask_of(cpu));
 
 	new_freq = clock_tick = sparc64_get_clock_tick(cpu) / 1000;
 	new_bits = index_to_estar_mode(index);
@@ -281,7 +281,7 @@ static void us2e_set_cpu_divider_index(unsigned int cpu, unsigned int index)
 
 	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
 
-	set_cpus_allowed(current, cpus_allowed);
+	set_cpus_allowed_ptr(current, &cpus_allowed);
 }
 
 static int us2e_freq_target(struct cpufreq_policy *policy,

arch/sparc/kernel/us3_cpufreq.c

@@ -86,12 +86,12 @@ static unsigned int us3_freq_get(unsigned int cpu)
 		return 0;
 
 	cpus_allowed = current->cpus_allowed;
-	set_cpus_allowed(current, cpumask_of_cpu(cpu));
+	set_cpus_allowed_ptr(current, cpumask_of(cpu));
 
 	reg = read_safari_cfg();
 	ret = get_current_freq(cpu, reg);
 
-	set_cpus_allowed(current, cpus_allowed);
+	set_cpus_allowed_ptr(current, &cpus_allowed);
 
 	return ret;
 }
@@ -106,7 +106,7 @@ static void us3_set_cpu_divider_index(unsigned int cpu, unsigned int index)
 		return;
 
 	cpus_allowed = current->cpus_allowed;
-	set_cpus_allowed(current, cpumask_of_cpu(cpu));
+	set_cpus_allowed_ptr(current, cpumask_of(cpu));
 
 	new_freq = sparc64_get_clock_tick(cpu) / 1000;
 	switch (index) {
@@ -140,7 +140,7 @@ static void us3_set_cpu_divider_index(unsigned int cpu, unsigned int index)
 
 	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
 
-	set_cpus_allowed(current, cpus_allowed);
+	set_cpus_allowed_ptr(current, &cpus_allowed);
 }
 
 static int us3_freq_target(struct cpufreq_policy *policy,

arch/x86/include/asm/fixmap.h

@@ -82,6 +82,9 @@ enum fixed_addresses {
 #endif
 	FIX_DBGP_BASE,
 	FIX_EARLYCON_MEM_BASE,
+#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
+	FIX_OHCI1394_BASE,
+#endif
 #ifdef CONFIG_X86_LOCAL_APIC
 	FIX_APIC_BASE,	/* local (CPU) APIC) -- required for SMP or not */
 #endif
@@ -132,9 +135,6 @@ enum fixed_addresses {
 	   (__end_of_permanent_fixed_addresses & (TOTAL_FIX_BTMAPS - 1))
 	 : __end_of_permanent_fixed_addresses,
 	FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1,
-#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
-	FIX_OHCI1394_BASE,
-#endif
 #ifdef CONFIG_X86_32
 	FIX_WP_TEST,
 #endif

arch/x86/include/asm/hw_irq.h

@@ -133,6 +133,7 @@ extern void (*__initconst interrupt[NR_VECTORS-FIRST_EXTERNAL_VECTOR])(void);
 
 typedef int vector_irq_t[NR_VECTORS];
 DECLARE_PER_CPU(vector_irq_t, vector_irq);
+extern void setup_vector_irq(int cpu);
 
 #ifdef CONFIG_X86_IO_APIC
 extern void lock_vector_lock(void);

arch/x86/include/asm/msr-index.h

@@ -108,6 +108,8 @@
 #define MSR_AMD64_PATCH_LEVEL		0x0000008b
 #define MSR_AMD64_NB_CFG		0xc001001f
 #define MSR_AMD64_PATCH_LOADER		0xc0010020
+#define MSR_AMD64_OSVW_ID_LENGTH	0xc0010140
+#define MSR_AMD64_OSVW_STATUS		0xc0010141
 #define MSR_AMD64_IBSFETCHCTL		0xc0011030
 #define MSR_AMD64_IBSFETCHLINAD		0xc0011031
 #define MSR_AMD64_IBSFETCHPHYSAD	0xc0011032

arch/x86/kernel/apic/io_apic.c

@@ -1268,6 +1268,14 @@ void __setup_vector_irq(int cpu)
 	/* Mark the inuse vectors */
 	for_each_irq_desc(irq, desc) {
 		cfg = desc->chip_data;
+
+		/*
+		 * If it is a legacy IRQ handled by the legacy PIC, this cpu
+		 * will be part of the irq_cfg's domain.
+		 */
+		if (irq < legacy_pic->nr_legacy_irqs && !IO_APIC_IRQ(irq))
+			cpumask_set_cpu(cpu, cfg->domain);
+
 		if (!cpumask_test_cpu(cpu, cfg->domain))
 			continue;
 		vector = cfg->vector;

arch/x86/kernel/cpu/perf_event.c

@@ -28,6 +28,7 @@
 #include <asm/apic.h>
 #include <asm/stacktrace.h>
 #include <asm/nmi.h>
+#include <asm/compat.h>
 
 #if 0
 #undef wrmsrl
@@ -209,7 +210,7 @@ struct x86_pmu {
 	struct event_constraint *event_constraints;
 	void		(*quirks)(void);
 
-	void		(*cpu_prepare)(int cpu);
+	int		(*cpu_prepare)(int cpu);
 	void		(*cpu_starting)(int cpu);
 	void		(*cpu_dying)(int cpu);
 	void		(*cpu_dead)(int cpu);
@@ -1330,11 +1331,12 @@ static int __cpuinit
 x86_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (long)hcpu;
+	int ret = NOTIFY_OK;
 
 	switch (action & ~CPU_TASKS_FROZEN) {
 	case CPU_UP_PREPARE:
 		if (x86_pmu.cpu_prepare)
-			x86_pmu.cpu_prepare(cpu);
+			ret = x86_pmu.cpu_prepare(cpu);
 		break;
 
 	case CPU_STARTING:
@@ -1347,6 +1349,7 @@ x86_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu)
 			x86_pmu.cpu_dying(cpu);
 		break;
 
+	case CPU_UP_CANCELED:
 	case CPU_DEAD:
 		if (x86_pmu.cpu_dead)
 			x86_pmu.cpu_dead(cpu);
@@ -1356,7 +1359,7 @@ x86_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu)
 		break;
 	}
 
-	return NOTIFY_OK;
+	return ret;
 }
 
 static void __init pmu_check_apic(void)
@@ -1620,14 +1623,42 @@ perf_callchain_kernel(struct pt_regs *regs, struct perf_callchain_entry *entry)
 	dump_trace(NULL, regs, NULL, regs->bp, &backtrace_ops, entry);
 }
 
-static int copy_stack_frame(const void __user *fp, struct stack_frame *frame)
+#ifdef CONFIG_COMPAT
+static inline int
+perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry)
 {
-	unsigned long bytes;
+	/* 32-bit process in 64-bit kernel. */
+	struct stack_frame_ia32 frame;
+	const void __user *fp;
 
-	bytes = copy_from_user_nmi(frame, fp, sizeof(*frame));
+	if (!test_thread_flag(TIF_IA32))
+		return 0;
+
+	fp = compat_ptr(regs->bp);
+	while (entry->nr < PERF_MAX_STACK_DEPTH) {
+		unsigned long bytes;
+		frame.next_frame     = 0;
+		frame.return_address = 0;
+
+		bytes = copy_from_user_nmi(&frame, fp, sizeof(frame));
+		if (bytes != sizeof(frame))
+			break;
+
+		if (fp < compat_ptr(regs->sp))
+			break;
 
-	return bytes == sizeof(*frame);
+		callchain_store(entry, frame.return_address);
+		fp = compat_ptr(frame.next_frame);
+	}
+	return 1;
 }
+#else
+static inline int
+perf_callchain_user32(struct pt_regs *regs, struct perf_callchain_entry *entry)
+{
+    return 0;
+}
+#endif
 
 static void
 perf_callchain_user(struct pt_regs *regs, struct perf_callchain_entry *entry)
@@ -1643,11 +1674,16 @@ perf_callchain_user(struct pt_regs *regs, struct perf_callchain_entry *entry)
 	callchain_store(entry, PERF_CONTEXT_USER);
 	callchain_store(entry, regs->ip);
 
+	if (perf_callchain_user32(regs, entry))
+		return;
+
 	while (entry->nr < PERF_MAX_STACK_DEPTH) {
+		unsigned long bytes;
 		frame.next_frame	     = NULL;
 		frame.return_address = 0;
 
-		if (!copy_stack_frame(fp, &frame))
+		bytes = copy_from_user_nmi(&frame, fp, sizeof(frame));
+		if (bytes != sizeof(frame))
 			break;
 
 		if ((unsigned long)fp < regs->sp)
@@ -1694,7 +1730,6 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
 	return entry;
 }
 
-#ifdef CONFIG_EVENT_TRACING
 void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int skip)
 {
 	regs->ip = ip;
@@ -1706,4 +1741,3 @@ void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int ski
 	regs->cs = __KERNEL_CS;
 	local_save_flags(regs->flags);
 }
-#endif

arch/x86/kernel/cpu/perf_event_amd.c

@@ -137,6 +137,13 @@ static inline int amd_is_nb_event(struct hw_perf_event *hwc)
 	return (hwc->config & 0xe0) == 0xe0;
 }
 
+static inline int amd_has_nb(struct cpu_hw_events *cpuc)
+{
+	struct amd_nb *nb = cpuc->amd_nb;
+
+	return nb && nb->nb_id != -1;
+}
+
 static void amd_put_event_constraints(struct cpu_hw_events *cpuc,
 				      struct perf_event *event)
 {
@@ -147,7 +154,7 @@ static void amd_put_event_constraints(struct cpu_hw_events *cpuc,
 	/*
 	 * only care about NB events
 	 */
-	if (!(nb && amd_is_nb_event(hwc)))
+	if (!(amd_has_nb(cpuc) && amd_is_nb_event(hwc)))
 		return;
 
 	/*
@@ -214,7 +221,7 @@ amd_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event)
 	/*
 	 * if not NB event or no NB, then no constraints
 	 */
-	if (!(nb && amd_is_nb_event(hwc)))
+	if (!(amd_has_nb(cpuc) && amd_is_nb_event(hwc)))
 		return &unconstrained;
 
 	/*
@@ -293,51 +300,55 @@ static struct amd_nb *amd_alloc_nb(int cpu, int nb_id)
 	return nb;
 }
 
-static void amd_pmu_cpu_online(int cpu)
+static int amd_pmu_cpu_prepare(int cpu)
+{
+	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
+
+	WARN_ON_ONCE(cpuc->amd_nb);
+
+	if (boot_cpu_data.x86_max_cores < 2)
+		return NOTIFY_OK;
+
+	cpuc->amd_nb = amd_alloc_nb(cpu, -1);
+	if (!cpuc->amd_nb)
+		return NOTIFY_BAD;
+
+	return NOTIFY_OK;
+}
+
+static void amd_pmu_cpu_starting(int cpu)
 {
-	struct cpu_hw_events *cpu1, *cpu2;
-	struct amd_nb *nb = NULL;
+	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
+	struct amd_nb *nb;
 	int i, nb_id;
 
 	if (boot_cpu_data.x86_max_cores < 2)
 		return;
 
-	/*
-	 * function may be called too early in the
-	 * boot process, in which case nb_id is bogus
-	 */
 	nb_id = amd_get_nb_id(cpu);
-	if (nb_id == BAD_APICID)
-		return;
-
-	cpu1 = &per_cpu(cpu_hw_events, cpu);
-	cpu1->amd_nb = NULL;
+	WARN_ON_ONCE(nb_id == BAD_APICID);
 
 	raw_spin_lock(&amd_nb_lock);
 
 	for_each_online_cpu(i) {
-		cpu2 = &per_cpu(cpu_hw_events, i);
-		nb = cpu2->amd_nb;
-		if (!nb)
+		nb = per_cpu(cpu_hw_events, i).amd_nb;
+		if (WARN_ON_ONCE(!nb))
 			continue;
-		if (nb->nb_id == nb_id)
-			goto found;
-	}
 
-	nb = amd_alloc_nb(cpu, nb_id);
-	if (!nb) {
-		pr_err("perf_events: failed NB allocation for CPU%d\n", cpu);
-		raw_spin_unlock(&amd_nb_lock);
-		return;
+		if (nb->nb_id == nb_id) {
+			kfree(cpuc->amd_nb);
+			cpuc->amd_nb = nb;
+			break;
+		}
 	}
-found:
-	nb->refcnt++;
-	cpu1->amd_nb = nb;
+
+	cpuc->amd_nb->nb_id = nb_id;
+	cpuc->amd_nb->refcnt++;
 
 	raw_spin_unlock(&amd_nb_lock);
 }
 
-static void amd_pmu_cpu_offline(int cpu)
+static void amd_pmu_cpu_dead(int cpu)
 {
 	struct cpu_hw_events *cpuhw;
 
@@ -348,10 +359,14 @@ static void amd_pmu_cpu_offline(int cpu)
 
 	raw_spin_lock(&amd_nb_lock);
 
-	if (--cpuhw->amd_nb->refcnt == 0)
-		kfree(cpuhw->amd_nb);
+	if (cpuhw->amd_nb) {
+		struct amd_nb *nb = cpuhw->amd_nb;
+
+		if (nb->nb_id == -1 || --nb->refcnt == 0)
+			kfree(nb);
 
-	cpuhw->amd_nb = NULL;
+		cpuhw->amd_nb = NULL;
+	}
 
 	raw_spin_unlock(&amd_nb_lock);
 }
@@ -379,8 +394,9 @@ static __initconst struct x86_pmu amd_pmu = {
 	.get_event_constraints	= amd_get_event_constraints,
 	.put_event_constraints	= amd_put_event_constraints,
 
-	.cpu_prepare		= amd_pmu_cpu_online,
-	.cpu_dead		= amd_pmu_cpu_offline,
+	.cpu_prepare		= amd_pmu_cpu_prepare,
+	.cpu_starting		= amd_pmu_cpu_starting,
+	.cpu_dead		= amd_pmu_cpu_dead,
 };
 
 static __init int amd_pmu_init(void)

arch/x86/kernel/dumpstack.h

@@ -30,6 +30,11 @@ struct stack_frame {
 	unsigned long return_address;
 };
 
+struct stack_frame_ia32 {
+    u32 next_frame;
+    u32 return_address;
+};
+
 static inline unsigned long rewind_frame_pointer(int n)
 {
 	struct stack_frame *frame;

arch/x86/kernel/head32.c

@@ -7,6 +7,7 @@
 
 #include <linux/init.h>
 #include <linux/start_kernel.h>
+#include <linux/mm.h>
 
 #include <asm/setup.h>
 #include <asm/sections.h>
@@ -44,9 +45,10 @@ void __init i386_start_kernel(void)
 #ifdef CONFIG_BLK_DEV_INITRD
 	/* Reserve INITRD */
 	if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) {
+		/* Assume only end is not page aligned */
 		u64 ramdisk_image = boot_params.hdr.ramdisk_image;
 		u64 ramdisk_size  = boot_params.hdr.ramdisk_size;
-		u64 ramdisk_end   = ramdisk_image + ramdisk_size;
+		u64 ramdisk_end   = PAGE_ALIGN(ramdisk_image + ramdisk_size);
 		reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
 	}
 #endif

arch/x86/kernel/head64.c

@@ -103,9 +103,10 @@ void __init x86_64_start_reservations(char *real_mode_data)
 #ifdef CONFIG_BLK_DEV_INITRD
 	/* Reserve INITRD */
 	if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) {
+		/* Assume only end is not page aligned */
 		unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
 		unsigned long ramdisk_size  = boot_params.hdr.ramdisk_size;
-		unsigned long ramdisk_end   = ramdisk_image + ramdisk_size;
+		unsigned long ramdisk_end   = PAGE_ALIGN(ramdisk_image + ramdisk_size);
 		reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
 	}
 #endif

arch/x86/kernel/irqinit.c

@@ -141,6 +141,28 @@ void __init init_IRQ(void)
 	x86_init.irqs.intr_init();
 }
 
+/*
+ * Setup the vector to irq mappings.
+ */
+void setup_vector_irq(int cpu)
+{
+#ifndef CONFIG_X86_IO_APIC
+	int irq;
+
+	/*
+	 * On most of the platforms, legacy PIC delivers the interrupts on the
+	 * boot cpu. But there are certain platforms where PIC interrupts are
+	 * delivered to multiple cpu's. If the legacy IRQ is handled by the
+	 * legacy PIC, for the new cpu that is coming online, setup the static
+	 * legacy vector to irq mapping:
+	 */
+	for (irq = 0; irq < legacy_pic->nr_legacy_irqs; irq++)
+		per_cpu(vector_irq, cpu)[IRQ0_VECTOR + irq] = irq;
+#endif
+
+	__setup_vector_irq(cpu);
+}
+
 static void __init smp_intr_init(void)
 {
 #ifdef CONFIG_SMP

arch/x86/kernel/kgdb.c

@@ -618,8 +618,8 @@ int kgdb_arch_init(void)
 	 * portion of kgdb because this operation requires mutexs to
 	 * complete.
 	 */
+	hw_breakpoint_init(&attr);
 	attr.bp_addr = (unsigned long)kgdb_arch_init;
-	attr.type = PERF_TYPE_BREAKPOINT;
 	attr.bp_len = HW_BREAKPOINT_LEN_1;
 	attr.bp_type = HW_BREAKPOINT_W;
 	attr.disabled = 1;

arch/x86/kernel/process.c

@@ -528,21 +528,37 @@ static int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
 }
 
 /*
- * Check for AMD CPUs, which have potentially C1E support
+ * Check for AMD CPUs, where APIC timer interrupt does not wake up CPU from C1e.
+ * For more information see
+ * - Erratum #400 for NPT family 0xf and family 0x10 CPUs
+ * - Erratum #365 for family 0x11 (not affected because C1e not in use)
  */
 static int __cpuinit check_c1e_idle(const struct cpuinfo_x86 *c)
 {
+	u64 val;
 	if (c->x86_vendor != X86_VENDOR_AMD)
-		return 0;
-
-	if (c->x86 < 0x0F)
-		return 0;
+		goto no_c1e_idle;
 
 	/* Family 0x0f models < rev F do not have C1E */
-	if (c->x86 == 0x0f && c->x86_model < 0x40)
-		return 0;
+	if (c->x86 == 0x0F && c->x86_model >= 0x40)
+		return 1;
 
-	return 1;
+	if (c->x86 == 0x10) {
+		/*
+		 * check OSVW bit for CPUs that are not affected
+		 * by erratum #400
+		 */
+		rdmsrl(MSR_AMD64_OSVW_ID_LENGTH, val);
+		if (val >= 2) {
+			rdmsrl(MSR_AMD64_OSVW_STATUS, val);
+			if (!(val & BIT(1)))
+				goto no_c1e_idle;
+		}
+		return 1;
+	}
+
+no_c1e_idle:
+	return 0;
 }
 
 static cpumask_var_t c1e_mask;

arch/x86/kernel/setup.c

@@ -314,16 +314,17 @@ static void __init reserve_brk(void)
 #define MAX_MAP_CHUNK	(NR_FIX_BTMAPS << PAGE_SHIFT)
 static void __init relocate_initrd(void)
 {
-
+	/* Assume only end is not page aligned */
 	u64 ramdisk_image = boot_params.hdr.ramdisk_image;
 	u64 ramdisk_size  = boot_params.hdr.ramdisk_size;
+	u64 area_size     = PAGE_ALIGN(ramdisk_size);
 	u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT;
 	u64 ramdisk_here;
 	unsigned long slop, clen, mapaddr;
 	char *p, *q;
 
 	/* We need to move the initrd down into lowmem */
-	ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size,
+	ramdisk_here = find_e820_area(0, end_of_lowmem, area_size,
 					 PAGE_SIZE);
 
 	if (ramdisk_here == -1ULL)
@@ -332,7 +333,7 @@ static void __init relocate_initrd(void)
 
 	/* Note: this includes all the lowmem currently occupied by
 	   the initrd, we rely on that fact to keep the data intact. */
-	reserve_early(ramdisk_here, ramdisk_here + ramdisk_size,
+	reserve_early(ramdisk_here, ramdisk_here + area_size,
 			 "NEW RAMDISK");
 	initrd_start = ramdisk_here + PAGE_OFFSET;
 	initrd_end   = initrd_start + ramdisk_size;
@@ -376,9 +377,10 @@ static void __init relocate_initrd(void)
 
 static void __init reserve_initrd(void)
 {
+	/* Assume only end is not page aligned */
 	u64 ramdisk_image = boot_params.hdr.ramdisk_image;
 	u64 ramdisk_size  = boot_params.hdr.ramdisk_size;
-	u64 ramdisk_end   = ramdisk_image + ramdisk_size;
+	u64 ramdisk_end   = PAGE_ALIGN(ramdisk_image + ramdisk_size);
 	u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT;
 
 	if (!boot_params.hdr.type_of_loader ||

arch/x86/kernel/smpboot.c

@@ -242,12 +242,10 @@ static void __cpuinit smp_callin(void)
 	end_local_APIC_setup();
 	map_cpu_to_logical_apicid();
 
-	notify_cpu_starting(cpuid);
-
 	/*
 	 * Need to setup vector mappings before we enable interrupts.
 	 */
-	__setup_vector_irq(smp_processor_id());
+	setup_vector_irq(smp_processor_id());
 	/*
 	 * Get our bogomips.
 	 *
@@ -264,6 +262,8 @@ static void __cpuinit smp_callin(void)
 	 */
 	smp_store_cpu_info(cpuid);
 
+	notify_cpu_starting(cpuid);
+
 	/*
 	 * Allow the master to continue.
 	 */

arch/x86/kernel/vmlinux.lds.S

@@ -291,8 +291,8 @@ SECTIONS
 	.smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
 		__smp_locks = .;
 		*(.smp_locks)
-		__smp_locks_end = .;
 		. = ALIGN(PAGE_SIZE);
+		__smp_locks_end = .;
 	}
 
 #ifdef CONFIG_X86_64

arch/x86/mm/init.c

@@ -331,11 +331,23 @@ int devmem_is_allowed(unsigned long pagenr)
 
 void free_init_pages(char *what, unsigned long begin, unsigned long end)
 {
-	unsigned long addr = begin;
+	unsigned long addr;
+	unsigned long begin_aligned, end_aligned;
 
-	if (addr >= end)
+	/* Make sure boundaries are page aligned */
+	begin_aligned = PAGE_ALIGN(begin);
+	end_aligned   = end & PAGE_MASK;
+
+	if (WARN_ON(begin_aligned != begin || end_aligned != end)) {
+		begin = begin_aligned;
+		end   = end_aligned;
+	}
+
+	if (begin >= end)
 		return;
 
+	addr = begin;
+
 	/*
 	 * If debugging page accesses then do not free this memory but
 	 * mark them not present - any buggy init-section access will
@@ -343,7 +355,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
 	 */
 #ifdef CONFIG_DEBUG_PAGEALLOC
 	printk(KERN_INFO "debug: unmapping init memory %08lx..%08lx\n",
-		begin, PAGE_ALIGN(end));
+		begin, end);
 	set_memory_np(begin, (end - begin) >> PAGE_SHIFT);
 #else
 	/*
@@ -358,8 +370,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
 	for (; addr < end; addr += PAGE_SIZE) {
 		ClearPageReserved(virt_to_page(addr));
 		init_page_count(virt_to_page(addr));
-		memset((void *)(addr & ~(PAGE_SIZE-1)),
-			POISON_FREE_INITMEM, PAGE_SIZE);
+		memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE);
 		free_page(addr);
 		totalram_pages++;
 	}
@@ -376,6 +387,15 @@ void free_initmem(void)
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-	free_init_pages("initrd memory", start, end);
+	/*
+	 * end could be not aligned, and We can not align that,
+	 * decompresser could be confused by aligned initrd_end
+	 * We already reserve the end partial page before in
+	 *   - i386_start_kernel()
+	 *   - x86_64_start_kernel()
+	 *   - relocate_initrd()
+	 * So here We can do PAGE_ALIGN() safely to get partial page to be freed
+	 */
+	free_init_pages("initrd memory", start, PAGE_ALIGN(end));
 }
 #endif

arch/x86/pci/acpi.c

@@ -122,8 +122,8 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
 	struct acpi_resource_address64 addr;
 	acpi_status status;
 	unsigned long flags;
-	struct resource *root;
-	u64 start, end;
+	struct resource *root, *conflict;
+	u64 start, end, max_len;
 
 	status = resource_to_addr(acpi_res, &addr);
 	if (!ACPI_SUCCESS(status))
@@ -140,6 +140,17 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
 	} else
 		return AE_OK;
 
+	max_len = addr.maximum - addr.minimum + 1;
+	if (addr.address_length > max_len) {
+		dev_printk(KERN_DEBUG, &info->bridge->dev,
+			   "host bridge window length %#llx doesn't fit in "
+			   "%#llx-%#llx, trimming\n",
+			   (unsigned long long) addr.address_length,
+			   (unsigned long long) addr.minimum,
+			   (unsigned long long) addr.maximum);
+		addr.address_length = max_len;
+	}
+
 	start = addr.minimum + addr.translation_offset;
 	end = start + addr.address_length - 1;
 
@@ -157,9 +168,12 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
 		return AE_OK;
 	}
 
-	if (insert_resource(root, res)) {
+	conflict = insert_resource_conflict(root, res);
+	if (conflict) {
 		dev_err(&info->bridge->dev,
-			"can't allocate host bridge window %pR\n", res);
+			"address space collision: host bridge window %pR "
+			"conflicts with %s %pR\n",
+			res, conflict->name, conflict);
 	} else {
 		pci_bus_add_resource(info->bus, res, 0);
 		info->res_num++;

arch/x86/pci/i386.c

@@ -127,9 +127,6 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
 					continue;
 				if (!r->start ||
 				    pci_claim_resource(dev, idx) < 0) {
-					dev_info(&dev->dev,
-						 "can't reserve window %pR\n",
-						 r);
 					/*
 					 * Something is wrong with the region.
 					 * Invalidate the resource to prevent
@@ -181,8 +178,6 @@ static void __init pcibios_allocate_resources(int pass)
 					"BAR %d: reserving %pr (d=%d, p=%d)\n",
 					idx, r, disabled, pass);
 				if (pci_claim_resource(dev, idx) < 0) {
-					dev_info(&dev->dev,
-						 "can't reserve %pR\n", r);
 					/* We'll assign a new address later */
 					r->end -= r->start;
 					r->start = 0;

drivers/acpi/scan.c

@@ -8,6 +8,7 @@
 #include <linux/acpi.h>
 #include <linux/signal.h>
 #include <linux/kthread.h>
+#include <linux/dmi.h>
 
 #include <acpi/acpi_drivers.h>
 
@@ -1032,6 +1033,41 @@ static void acpi_add_id(struct acpi_device *device, const char *dev_id)
 	list_add_tail(&id->list, &device->pnp.ids);
 }
 
+/*
+ * Old IBM workstations have a DSDT bug wherein the SMBus object
+ * lacks the SMBUS01 HID and the methods do not have the necessary "_"
+ * prefix.  Work around this.
+ */
+static int acpi_ibm_smbus_match(struct acpi_device *device)
+{
+	acpi_handle h_dummy;
+	struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
+	int result;
+
+	if (!dmi_name_in_vendors("IBM"))
+		return -ENODEV;
+
+	/* Look for SMBS object */
+	result = acpi_get_name(device->handle, ACPI_SINGLE_NAME, &path);
+	if (result)
+		return result;
+
+	if (strcmp("SMBS", path.pointer)) {
+		result = -ENODEV;
+		goto out;
+	}
+
+	/* Does it have the necessary (but misnamed) methods? */
+	result = -ENODEV;
+	if (ACPI_SUCCESS(acpi_get_handle(device->handle, "SBI", &h_dummy)) &&
+	    ACPI_SUCCESS(acpi_get_handle(device->handle, "SBR", &h_dummy)) &&
+	    ACPI_SUCCESS(acpi_get_handle(device->handle, "SBW", &h_dummy)))
+		result = 0;
+out:
+	kfree(path.pointer);
+	return result;
+}
+
 static void acpi_device_set_id(struct acpi_device *device)
 {
 	acpi_status status;
@@ -1082,6 +1118,8 @@ static void acpi_device_set_id(struct acpi_device *device)
 			acpi_add_id(device, ACPI_BAY_HID);
 		else if (ACPI_SUCCESS(acpi_dock_match(device)))
 			acpi_add_id(device, ACPI_DOCK_HID);
+		else if (!acpi_ibm_smbus_match(device))
+			acpi_add_id(device, ACPI_SMBUS_IBM_HID);
 
 		break;
 	case ACPI_BUS_TYPE_POWER:

drivers/ata/libata-sff.c

@@ -1667,6 +1667,7 @@ unsigned int ata_sff_host_intr(struct ata_port *ap,
 {
 	struct ata_eh_info *ehi = &ap->link.eh_info;
 	u8 status, host_stat = 0;
+	bool bmdma_stopped = false;
 
 	VPRINTK("ata%u: protocol %d task_state %d\n",
 		ap->print_id, qc->tf.protocol, ap->hsm_task_state);
@@ -1699,6 +1700,7 @@ unsigned int ata_sff_host_intr(struct ata_port *ap,
 
 			/* before we do anything else, clear DMA-Start bit */
 			ap->ops->bmdma_stop(qc);
+			bmdma_stopped = true;
 
 			if (unlikely(host_stat & ATA_DMA_ERR)) {
 				/* error when transfering data to/from memory */
@@ -1716,8 +1718,14 @@ unsigned int ata_sff_host_intr(struct ata_port *ap,
 
 	/* check main status, clearing INTRQ if needed */
 	status = ata_sff_irq_status(ap);
-	if (status & ATA_BUSY)
-		goto idle_irq;
+	if (status & ATA_BUSY) {
+		if (bmdma_stopped) {
+			/* BMDMA engine is already stopped, we're screwed */
+			qc->err_mask |= AC_ERR_HSM;
+			ap->hsm_task_state = HSM_ST_ERR;
+		} else
+			goto idle_irq;
+	}
 
 	/* ack bmdma irq events */
 	ap->ops->sff_irq_clear(ap);
@@ -1762,13 +1770,16 @@ EXPORT_SYMBOL_GPL(ata_sff_host_intr);
 irqreturn_t ata_sff_interrupt(int irq, void *dev_instance)
 {
 	struct ata_host *host = dev_instance;
+	bool retried = false;
 	unsigned int i;
-	unsigned int handled = 0, polling = 0;
+	unsigned int handled, idle, polling;
 	unsigned long flags;
 
 	/* TODO: make _irqsave conditional on x86 PCI IDE legacy mode */
 	spin_lock_irqsave(&host->lock, flags);
 
+retry:
+	handled = idle = polling = 0;
 	for (i = 0; i < host->n_ports; i++) {
 		struct ata_port *ap = host->ports[i];
 		struct ata_queued_cmd *qc;
@@ -1782,7 +1793,8 @@ irqreturn_t ata_sff_interrupt(int irq, void *dev_instance)
 				handled |= ata_sff_host_intr(ap, qc);
 			else
 				polling |= 1 << i;
-		}
+		} else
+			idle |= 1 << i;
 	}
 
 	/*
@@ -1790,7 +1802,9 @@ irqreturn_t ata_sff_interrupt(int irq, void *dev_instance)
 	 * asserting IRQ line, nobody cared will ensue.  Check IRQ
 	 * pending status if available and clear spurious IRQ.
 	 */
-	if (!handled) {
+	if (!handled && !retried) {
+		bool retry = false;
+
 		for (i = 0; i < host->n_ports; i++) {
 			struct ata_port *ap = host->ports[i];
 
@@ -1805,8 +1819,23 @@ irqreturn_t ata_sff_interrupt(int irq, void *dev_instance)
 				ata_port_printk(ap, KERN_INFO,
 						"clearing spurious IRQ\n");
 
-			ap->ops->sff_check_status(ap);
-			ap->ops->sff_irq_clear(ap);
+			if (idle & (1 << i)) {
+				ap->ops->sff_check_status(ap);
+				ap->ops->sff_irq_clear(ap);
+			} else {
+				/* clear INTRQ and check if BUSY cleared */
+				if (!(ap->ops->sff_check_status(ap) & ATA_BUSY))
+					retry |= true;
+				/*
+				 * With command in flight, we can't do
+				 * sff_irq_clear() w/o racing with completion.
+				 */
+			}
+		}
+
+		if (retry) {
+			retried = true;
+			goto retry;
 		}
 	}
 

drivers/ata/pata_via.c

@@ -576,6 +576,10 @@ static int via_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 			u8 rev = isa->revision;
 			pci_dev_put(isa);
 
+			if ((id->device == 0x0415 || id->device == 0x3164) &&
+			    (config->id != id->device))
+				continue;
+
 			if (rev >= config->rev_min && rev <= config->rev_max)
 				break;
 		}
@@ -677,6 +681,7 @@ static const struct pci_device_id via[] = {
 	{ PCI_VDEVICE(VIA, 0x3164), },
 	{ PCI_VDEVICE(VIA, 0x5324), },
 	{ PCI_VDEVICE(VIA, 0xC409), VIA_IDFLAG_SINGLE },
+	{ PCI_VDEVICE(VIA, 0x9001), VIA_IDFLAG_SINGLE },
 
 	{ },
 };

drivers/base/power/main.c

@@ -439,8 +439,23 @@ static int device_resume_noirq(struct device *dev, pm_message_t state)
 	if (dev->bus && dev->bus->pm) {
 		pm_dev_dbg(dev, state, "EARLY ");
 		error = pm_noirq_op(dev, dev->bus->pm, state);
+		if (error)
+			goto End;
 	}
 
+	if (dev->type && dev->type->pm) {
+		pm_dev_dbg(dev, state, "EARLY type ");
+		error = pm_noirq_op(dev, dev->type->pm, state);
+		if (error)
+			goto End;
+	}
+
+	if (dev->class && dev->class->pm) {
+		pm_dev_dbg(dev, state, "EARLY class ");
+		error = pm_noirq_op(dev, dev->class->pm, state);
+	}
+
+End:
 	TRACE_RESUME(error);
 	return error;
 }
@@ -735,10 +750,26 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state)
 {
 	int error = 0;
 
+	if (dev->class && dev->class->pm) {
+		pm_dev_dbg(dev, state, "LATE class ");
+		error = pm_noirq_op(dev, dev->class->pm, state);
+		if (error)
+			goto End;
+	}
+
+	if (dev->type && dev->type->pm) {
+		pm_dev_dbg(dev, state, "LATE type ");
+		error = pm_noirq_op(dev, dev->type->pm, state);
+		if (error)
+			goto End;
+	}
+
 	if (dev->bus && dev->bus->pm) {
 		pm_dev_dbg(dev, state, "LATE ");
 		error = pm_noirq_op(dev, dev->bus->pm, state);
 	}
+
+End:
 	return error;
 }
 

drivers/char/agp/intel-agp.c

@@ -97,6 +97,9 @@ EXPORT_SYMBOL(intel_agp_enabled);
 #define IS_PINEVIEW (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_PINEVIEW_M_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_PINEVIEW_HB)
 
+#define IS_SNB (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB || \
+		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB)
+
 #define IS_G4X (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_EAGLELAKE_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q45_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G45_HB || \
@@ -107,8 +110,7 @@ EXPORT_SYMBOL(intel_agp_enabled);
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB || \
 		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB || \
-		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB || \
-		agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB)
+		IS_SNB)
 
 extern int agp_memory_reserved;
 
@@ -175,6 +177,10 @@ extern int agp_memory_reserved;
 #define SNB_GMCH_GMS_STOLEN_448M	(0xe << 3)
 #define SNB_GMCH_GMS_STOLEN_480M	(0xf << 3)
 #define SNB_GMCH_GMS_STOLEN_512M	(0x10 << 3)
+#define SNB_GTT_SIZE_0M			(0 << 8)
+#define SNB_GTT_SIZE_1M			(1 << 8)
+#define SNB_GTT_SIZE_2M			(2 << 8)
+#define SNB_GTT_SIZE_MASK		(3 << 8)
 
 static const struct aper_size_info_fixed intel_i810_sizes[] =
 {
@@ -1200,6 +1206,9 @@ static void intel_i9xx_setup_flush(void)
 	if (intel_private.ifp_resource.start)
 		return;
 
+	if (IS_SNB)
+		return;
+
 	/* setup a resource for this object */
 	intel_private.ifp_resource.name = "Intel Flush Page";
 	intel_private.ifp_resource.flags = IORESOURCE_MEM;
@@ -1438,6 +1447,8 @@ static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge,
 
 static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
 {
+	u16 snb_gmch_ctl;
+
 	switch (agp_bridge->dev->device) {
 	case PCI_DEVICE_ID_INTEL_GM45_HB:
 	case PCI_DEVICE_ID_INTEL_EAGLELAKE_HB:
@@ -1449,9 +1460,26 @@ static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
 	case PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB:
 	case PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB:
 	case PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB:
+		*gtt_offset = *gtt_size = MB(2);
+		break;
 	case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB:
 	case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB:
-		*gtt_offset = *gtt_size = MB(2);
+		*gtt_offset = MB(2);
+
+		pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl);
+		switch (snb_gmch_ctl & SNB_GTT_SIZE_MASK) {
+		default:
+		case SNB_GTT_SIZE_0M:
+			printk(KERN_ERR "Bad GTT size mask: 0x%04x.\n", snb_gmch_ctl);
+			*gtt_size = MB(0);
+			break;
+		case SNB_GTT_SIZE_1M:
+			*gtt_size = MB(1);
+			break;
+		case SNB_GTT_SIZE_2M:
+			*gtt_size = MB(2);
+			break;
+		}
 		break;
 	default:
 		*gtt_offset = *gtt_size = KB(512);

drivers/char/virtio_console.c

@@ -681,6 +681,10 @@ static void resize_console(struct port *port)
 	struct virtio_device *vdev;
 	struct winsize ws;
 
+	/* The port could have been hot-unplugged */
+	if (!port)
+		return;
+
 	vdev = port->portdev->vdev;
 	if (virtio_has_feature(vdev, VIRTIO_CONSOLE_F_SIZE)) {
 		vdev->config->get(vdev,
@@ -947,11 +951,18 @@ static void handle_control_message(struct ports_device *portdev,
 		 */
 		err = sysfs_create_group(&port->dev->kobj,
 					 &port_attribute_group);
-		if (err)
+		if (err) {
 			dev_err(port->dev,
 				"Error %d creating sysfs device attributes\n",
 				err);
-
+		} else {
+			/*
+			 * Generate a udev event so that appropriate
+			 * symlinks can be created based on udev
+			 * rules.
+			 */
+			kobject_uevent(&port->dev->kobj, KOBJ_CHANGE);
+		}
 		break;
 	case VIRTIO_CONSOLE_PORT_REMOVE:
 		/*

drivers/edac/edac_mce_amd.c

@@ -316,7 +316,12 @@ void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors)
 		if (regs->nbsh & K8_NBSH_ERR_CPU_VAL)
 			pr_cont(", core: %u\n", (u8)(regs->nbsh & 0xf));
 	} else {
-		pr_cont(", core: %d\n", fls((regs->nbsh & 0xf) - 1));
+		u8 assoc_cpus = regs->nbsh & 0xf;
+
+		if (assoc_cpus > 0)
+			pr_cont(", core: %d", fls(assoc_cpus) - 1);
+
+		pr_cont("\n");
 	}
 
 	pr_emerg("%s.\n", EXT_ERR_MSG(xec));

drivers/firewire/core-device.c

@@ -126,97 +126,74 @@ int fw_csr_string(const u32 *directory, int key, char *buf, size_t size)
 }
 EXPORT_SYMBOL(fw_csr_string);
 
-static bool is_fw_unit(struct device *dev);
-
-static int match_unit_directory(const u32 *directory, u32 match_flags,
-				const struct ieee1394_device_id *id)
+static void get_ids(const u32 *directory, int *id)
 {
 	struct fw_csr_iterator ci;
-	int key, value, match;
+	int key, value;
 
-	match = 0;
 	fw_csr_iterator_init(&ci, directory);
 	while (fw_csr_iterator_next(&ci, &key, &value)) {
-		if (key == CSR_VENDOR && value == id->vendor_id)
-			match |= IEEE1394_MATCH_VENDOR_ID;
-		if (key == CSR_MODEL && value == id->model_id)
-			match |= IEEE1394_MATCH_MODEL_ID;
-		if (key == CSR_SPECIFIER_ID && value == id->specifier_id)
-			match |= IEEE1394_MATCH_SPECIFIER_ID;
-		if (key == CSR_VERSION && value == id->version)
-			match |= IEEE1394_MATCH_VERSION;
+		switch (key) {
+		case CSR_VENDOR:	id[0] = value; break;
+		case CSR_MODEL:		id[1] = value; break;
+		case CSR_SPECIFIER_ID:	id[2] = value; break;
+		case CSR_VERSION:	id[3] = value; break;
+		}
 	}
+}
+
+static void get_modalias_ids(struct fw_unit *unit, int *id)
+{
+	get_ids(&fw_parent_device(unit)->config_rom[5], id);
+	get_ids(unit->directory, id);
+}
+
+static bool match_ids(const struct ieee1394_device_id *id_table, int *id)
+{
+	int match = 0;
+
+	if (id[0] == id_table->vendor_id)
+		match |= IEEE1394_MATCH_VENDOR_ID;
+	if (id[1] == id_table->model_id)
+		match |= IEEE1394_MATCH_MODEL_ID;
+	if (id[2] == id_table->specifier_id)
+		match |= IEEE1394_MATCH_SPECIFIER_ID;
+	if (id[3] == id_table->version)
+		match |= IEEE1394_MATCH_VERSION;
 
-	return (match & match_flags) == match_flags;
+	return (match & id_table->match_flags) == id_table->match_flags;
 }
 
+static bool is_fw_unit(struct device *dev);
+
 static int fw_unit_match(struct device *dev, struct device_driver *drv)
 {
-	struct fw_unit *unit = fw_unit(dev);
-	struct fw_device *device;
-	const struct ieee1394_device_id *id;
+	const struct ieee1394_device_id *id_table =
+			container_of(drv, struct fw_driver, driver)->id_table;
+	int id[] = {0, 0, 0, 0};
 
 	/* We only allow binding to fw_units. */
 	if (!is_fw_unit(dev))
 		return 0;
 
-	device = fw_parent_device(unit);
-	id = container_of(drv, struct fw_driver, driver)->id_table;
+	get_modalias_ids(fw_unit(dev), id);
 
-	for (; id->match_flags != 0; id++) {
-		if (match_unit_directory(unit->directory, id->match_flags, id))
+	for (; id_table->match_flags != 0; id_table++)
+		if (match_ids(id_table, id))
 			return 1;
 
-		/* Also check vendor ID in the root directory. */
-		if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) &&
-		    match_unit_directory(&device->config_rom[5],
-				IEEE1394_MATCH_VENDOR_ID, id) &&
-		    match_unit_directory(unit->directory, id->match_flags
-				& ~IEEE1394_MATCH_VENDOR_ID, id))
-			return 1;
-	}
-
 	return 0;
 }
 
 static int get_modalias(struct fw_unit *unit, char *buffer, size_t buffer_size)
 {
-	struct fw_device *device = fw_parent_device(unit);
-	struct fw_csr_iterator ci;
+	int id[] = {0, 0, 0, 0};
 
-	int key, value;
-	int vendor = 0;
-	int model = 0;
-	int specifier_id = 0;
-	int version = 0;
-
-	fw_csr_iterator_init(&ci, &device->config_rom[5]);
-	while (fw_csr_iterator_next(&ci, &key, &value)) {
-		switch (key) {
-		case CSR_VENDOR:
-			vendor = value;
-			break;
-		case CSR_MODEL:
-			model = value;
-			break;
-		}
-	}
-
-	fw_csr_iterator_init(&ci, unit->directory);
-	while (fw_csr_iterator_next(&ci, &key, &value)) {
-		switch (key) {
-		case CSR_SPECIFIER_ID:
-			specifier_id = value;
-			break;
-		case CSR_VERSION:
-			version = value;
-			break;
-		}
-	}
+	get_modalias_ids(unit, id);
 
 	return snprintf(buffer, buffer_size,
 			"ieee1394:ven%08Xmo%08Xsp%08Xver%08X",
-			vendor, model, specifier_id, version);
+			id[0], id[1], id[2], id[3]);
 }
 
 static int fw_unit_uevent(struct device *dev, struct kobj_uevent_env *env)

drivers/firewire/core-iso.c

@@ -331,8 +331,9 @@ void fw_iso_resource_manage(struct fw_card *card, int generation,
 	if (ret < 0)
 		*bandwidth = 0;
 
-	if (allocate && ret < 0 && c >= 0) {
-		deallocate_channel(card, irm_id, generation, c, buffer);
+	if (allocate && ret < 0) {
+		if (c >= 0)
+			deallocate_channel(card, irm_id, generation, c, buffer);
 		*channel = ret;
 	}
 }

drivers/firewire/ohci.c

@@ -231,6 +231,8 @@ static inline struct fw_ohci *fw_ohci(struct fw_card *card)
 
 static char ohci_driver_name[] = KBUILD_MODNAME;
 
+#define PCI_DEVICE_ID_TI_TSB12LV22	0x8009
+
 #define QUIRK_CYCLE_TIMER		1
 #define QUIRK_RESET_PACKET		2
 #define QUIRK_BE_HEADERS		4
@@ -239,6 +241,8 @@ static char ohci_driver_name[] = KBUILD_MODNAME;
 static const struct {
 	unsigned short vendor, device, flags;
 } ohci_quirks[] = {
+	{PCI_VENDOR_ID_TI,	PCI_DEVICE_ID_TI_TSB12LV22, QUIRK_CYCLE_TIMER |
+							    QUIRK_RESET_PACKET},
 	{PCI_VENDOR_ID_TI,	PCI_ANY_ID,	QUIRK_RESET_PACKET},
 	{PCI_VENDOR_ID_AL,	PCI_ANY_ID,	QUIRK_CYCLE_TIMER},
 	{PCI_VENDOR_ID_NEC,	PCI_ANY_ID,	QUIRK_CYCLE_TIMER},