GitHub/exynos8895/android_kernel_samsung_universal8895.git
12 years agoMerge branch 'depends/rmk/for-linus' into next/soc
Arnd Bergmann [Sat, 7 Jan 2012 20:53:13 +0000 (20:53 +0000)]
Merge branch 'depends/rmk/for-linus' into next/soc

Conflicts:
arch/arm/mach-tegra/board-dt-tegra20.c
arch/arm/mach-tegra/common.c

12 years agoMerge branch 'restart' into for-linus
Russell King [Thu, 5 Jan 2012 13:25:15 +0000 (13:25 +0000)]
Merge branch 'restart' into for-linus

Conflicts:
arch/arm/mach-exynos/cpu.c

The changes to arch/arm/mach-exynos/cpu.c were moved to
mach-exynos/common.c.

12 years agoMerge branch 'devel-stable' into for-linus
Russell King [Thu, 5 Jan 2012 13:24:33 +0000 (13:24 +0000)]
Merge branch 'devel-stable' into for-linus

Conflicts:
arch/arm/kernel/setup.c
arch/arm/mach-shmobile/board-kota2.c

12 years agoMerge branches 'fixes' and 'misc' into for-linus
Russell King [Thu, 5 Jan 2012 13:24:16 +0000 (13:24 +0000)]
Merge branches 'fixes' and 'misc' into for-linus

12 years agoARM: 7267/1: Remove BUILD_BUG_ON from asm/bug.h
Simon Glass [Tue, 3 Jan 2012 19:49:19 +0000 (20:49 +0100)]
ARM: 7267/1: Remove BUILD_BUG_ON from asm/bug.h

BUILD_BUG_ON is defined in linux/kernel.h but that is not included by the
asm/bug.h header which uses it. This causes a build error:

...include/linux/mtd/map.h: In function 'inline_map_read':
...include/linux/mtd/map.h:408:3: error: implicit declaration of function
'BUILD_BUG_ON' [-Werror=implicit-function-declaration]

The check is not essential and is not present for other architectures, so
just remove it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7269/1: mach-sa1100: fix sched_clock breakage
Linus Walleij [Wed, 4 Jan 2012 10:42:19 +0000 (11:42 +0100)]
ARM: 7269/1: mach-sa1100: fix sched_clock breakage

Fixed up a simple typo in the runtime sched_clock conversion
so we compile again.

Cc: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7198/1: arm/imx6: add restart support for imx6q
Shawn Guo [Thu, 8 Dec 2011 23:51:26 +0000 (00:51 +0100)]
ARM: 7198/1: arm/imx6: add restart support for imx6q

The restart support was missed from the initial imx6q submission.
The mxc_restart() does not work for imx6q.  Instead, this patch adds
the restart for imx6q.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: remove the now empty arch_reset()
Russell King [Sat, 5 Nov 2011 21:30:00 +0000 (21:30 +0000)]
ARM: restart: remove the now empty arch_reset()

Remove the now empty arch_reset() from all the mach/system.h includes,
and remove its callsite.  Remove arm_machine_restart() as this function
no longer does anything useful.

For samsung platforms, remove the include of mach/system-reset.h and
plat/system-reset.h from their respective mach/system.h headers as these
just define their arch_reset functions.  As a result, the s3c2410 and
plat-samsung system-reset.h files are no longer referenced, so remove
these files entirely.

Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: remove comments about adding code to arch_reset()
Russell King [Sat, 5 Nov 2011 12:36:40 +0000 (12:36 +0000)]
ARM: restart: remove comments about adding code to arch_reset()

arch_reset() is deprecated; systems should hook into system restart via
the 'restart' method in the platforms machine description record.

Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: lpc32xx & u300: remove unnecessary printk
Russell King [Sat, 5 Nov 2011 12:18:20 +0000 (12:18 +0000)]
ARM: restart: lpc32xx & u300: remove unnecessary printk

Remove the:
KERN_CRIT "RESET: Rebooting system\n" (lpc32xx)
KERN_CRIT "RESET: shutting down/rebooting system\n" (u300)

printk from the restart handler; we already print such a message from
kernel_restart() in kernel/sys.c:

KERN_EMERG "Restarting system.\n"

so this is unnecessary.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: plat-samsung: remove plat/reset.h and s5p_reset_hook
Russell King [Sun, 6 Nov 2011 16:22:23 +0000 (16:22 +0000)]
ARM: restart: plat-samsung: remove plat/reset.h and s5p_reset_hook

Now that s5p_reset_hook is unused, we can get rid of plat/reset.h and
the s5p_reset_hook code in plat/system-reset.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: w90x900: use new restart hook
Russell King [Sat, 5 Nov 2011 14:50:25 +0000 (14:50 +0000)]
ARM: restart: w90x900: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: Versatile Express: use new restart hook
Russell King [Fri, 4 Nov 2011 15:47:50 +0000 (15:47 +0000)]
ARM: restart: Versatile Express: use new restart hook

Hook the Versatile Express platform restart code into the new restart
hook.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: versatile: use new restart hook
Russell King [Thu, 3 Nov 2011 11:43:08 +0000 (11:43 +0000)]
ARM: restart: versatile: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: u300: use new restart hook
Russell King [Sat, 5 Nov 2011 15:51:25 +0000 (15:51 +0000)]
ARM: restart: u300: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: tegra: use new restart hook
Russell King [Sat, 5 Nov 2011 08:48:33 +0000 (08:48 +0000)]
ARM: restart: tegra: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: spear: use new restart hook
Russell King [Sat, 5 Nov 2011 21:10:37 +0000 (21:10 +0000)]
ARM: restart: spear: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: shark: use new restart hook
Russell King [Sat, 5 Nov 2011 14:41:14 +0000 (14:41 +0000)]
ARM: restart: shark: use new restart hook

Hook the Shark restart code into the new restart hook rather than
using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: sa1100: use new restart hook
Russell King [Sat, 5 Nov 2011 10:28:50 +0000 (10:28 +0000)]
ARM: restart: sa1100: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7252/1: restart: S5PV210: use new restart hook
Russell King [Thu, 22 Dec 2011 22:36:02 +0000 (23:36 +0100)]
ARM: 7252/1: restart: S5PV210: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

[kgene.kim@samsung.com: according to local header, updated]

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7251/1: restart: S5PC100: use new restart hook
Kukjin Kim [Thu, 22 Dec 2011 22:35:21 +0000 (23:35 +0100)]
ARM: 7251/1: restart: S5PC100: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7250/1: restart: S5P64X0: use new restart hook
Kukjin Kim [Thu, 22 Dec 2011 22:34:25 +0000 (23:34 +0100)]
ARM: 7250/1: restart: S5P64X0: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7266/1: restart: S3C64XX: use new restart hook
Kukjin Kim [Tue, 3 Jan 2012 13:03:30 +0000 (14:03 +0100)]
ARM: 7266/1: restart: S3C64XX: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7265/1: restart: S3C24XX: use new restart hook
Kukjin Kim [Tue, 3 Jan 2012 13:02:03 +0000 (14:02 +0100)]
ARM: 7265/1: restart: S3C24XX: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().
And adds local header file, common.h in arch/arm/mach-s3c2410/ and
arch/arm/mach-s3c2440/ directories.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7254/1: restart: S3C24XX: move SWRST based S3C platforms to
Heiko Stuebner [Thu, 22 Dec 2011 22:37:44 +0000 (23:37 +0100)]
ARM: 7254/1: restart: S3C24XX: move SWRST based S3C platforms to

S3C2412/S3C2416/S3C2443 use a special register to signal the reset to
the processor and used therefore the s3c24xx_reset_hook mechanism in the
s3c24xx-specific arch reset.

This patch introduces restart functions for these architectures,
moves the board files to them and removes the s3c24xx_reset_hook
infrastructure, as all users are gone.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: riscpc: use new restart hook
Russell King [Fri, 4 Nov 2011 16:42:37 +0000 (16:42 +0000)]
ARM: restart: riscpc: use new restart hook

Hook the RiscPC restart code into the new restart hook.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: realview: use new restart hook
Russell King [Thu, 3 Nov 2011 14:00:13 +0000 (14:00 +0000)]
ARM: restart: realview: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: pxa: use new restart hook
Russell King [Fri, 4 Nov 2011 14:15:53 +0000 (14:15 +0000)]
ARM: restart: pxa: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: prima2: use new restart hook
Russell King [Sat, 5 Nov 2011 10:23:27 +0000 (10:23 +0000)]
ARM: restart: prima2: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Reviewed-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: pnx4008: use new restart hook
Russell King [Sat, 5 Nov 2011 15:45:57 +0000 (15:45 +0000)]
ARM: restart: pnx4008: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: orion5x: use new restart hook
Russell King [Sat, 5 Nov 2011 10:13:41 +0000 (10:13 +0000)]
ARM: restart: orion5x: use new restart hook

Hook these platforms restart code into the new restart hook rather than
using arch_reset().

In addition, convert calls to arm_machine_restart() to orion5x_restart()
to ensure that they continue to work as intended.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: omap: use new restart hook
Russell King [Sat, 5 Nov 2011 17:06:28 +0000 (17:06 +0000)]
ARM: restart: omap: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: nomadik: use new restart hook
Russell King [Mon, 28 Nov 2011 10:48:02 +0000 (10:48 +0000)]
ARM: restart: nomadik: use new restart hook

Hook the Nomadik NHK platform restart code into the new restart hook.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: netx: use new restart hook
Russell King [Fri, 11 Nov 2011 15:12:17 +0000 (15:12 +0000)]
ARM: restart: netx: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: mxs: use new restart hook
Russell King [Sat, 5 Nov 2011 15:43:30 +0000 (15:43 +0000)]
ARM: restart: mxs: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: mxc: use new restart hook
Russell King [Sun, 6 Nov 2011 17:12:08 +0000 (17:12 +0000)]
ARM: restart: mxc: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: mv78xx0: use new restart hook
Russell King [Sat, 5 Nov 2011 10:09:15 +0000 (10:09 +0000)]
ARM: restart: mv78xx0: use new restart hook

Hook these platforms restart code into the new restart hook rather than
using arch_reset().

Acked-by: Nicolas pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: mmp: use new restart hook
Russell King [Sat, 5 Nov 2011 15:40:09 +0000 (15:40 +0000)]
ARM: restart: mmp: use new restart hook

Hook the Shark restart code into the new restart hook rather than
using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: lpc32xx: use new restart hook
Russell King [Sat, 5 Nov 2011 12:17:40 +0000 (12:17 +0000)]
ARM: restart: lpc32xx: use new restart hook

Hook these platforms restart code into the arm_pm_restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: ks8695: use new restart hook
Russell King [Fri, 11 Nov 2011 15:30:47 +0000 (15:30 +0000)]
ARM: restart: ks8695: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: kirkwood: use new restart hook
Russell King [Sat, 5 Nov 2011 10:03:47 +0000 (10:03 +0000)]
ARM: restart: kirkwood: use new restart hook

Hook these platforms restart code into the new restart hook rather than
using arch_reset().

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: ixp4xx: use new restart hook
Russell King [Sat, 5 Nov 2011 12:10:55 +0000 (12:10 +0000)]
ARM: restart: ixp4xx: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: ixp23xx: use new restart hook
Russell King [Sat, 5 Nov 2011 11:35:32 +0000 (11:35 +0000)]
ARM: restart: ixp23xx: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

In doing so, we split out the ixdp2351 restart code into its own
platform file.

Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: ixp2000: use new restart hook
Russell King [Sat, 5 Nov 2011 11:46:04 +0000 (11:46 +0000)]
ARM: restart: ixp2000: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

In doing so, we split out the IXDP2401, IXDP2801 and IXDP2805 platform
specific restart code into their own platform files.

Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: iop13xx: use new restart hook
Russell King [Sun, 6 Nov 2011 10:49:50 +0000 (10:49 +0000)]
ARM: restart: iop13xx: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: iop3xx: use new restart hook
Russell King [Sat, 5 Nov 2011 11:26:32 +0000 (11:26 +0000)]
ARM: restart: iop3xx: use new restart hook

Hook these platforms restart code into the arm_pm_restart hook rather
than using arch_reset().

In doing so, we split out the n2100 platform specific restart handler
into the n2100 platform file.

Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: integrator: use new restart hook
Russell King [Thu, 3 Nov 2011 19:54:37 +0000 (19:54 +0000)]
ARM: restart: integrator: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: highbank: use new restart hook
Russell King [Sat, 5 Nov 2011 11:16:05 +0000 (11:16 +0000)]
ARM: restart: highbank: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: h720x: use new restart hook
Russell King [Sat, 5 Nov 2011 11:12:35 +0000 (11:12 +0000)]
ARM: restart: h720x: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: footbridge: use new restart hook
Russell King [Thu, 3 Nov 2011 19:47:54 +0000 (19:47 +0000)]
ARM: restart: footbridge: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7262/1: restart: EXYNOS: use new restart hook
Russell King [Tue, 3 Jan 2012 10:56:53 +0000 (11:56 +0100)]
ARM: 7262/1: restart: EXYNOS: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

[kgene.kim@samsung.com: according to local header, updated]

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: ep93xx: use new restart hook
Russell King [Sat, 5 Nov 2011 09:54:14 +0000 (09:54 +0000)]
ARM: restart: ep93xx: use new restart hook

Hook these platforms restart code into the new restart hook rather than
using arch_reset().

Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: ebsa110: use new restart hook
Russell King [Thu, 3 Nov 2011 19:50:44 +0000 (19:50 +0000)]
ARM: restart: ebsa110: use new restart hook

Hook the EBSA110 platform restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: dove: use new restart hook
Russell King [Sat, 5 Nov 2011 09:48:52 +0000 (09:48 +0000)]
ARM: restart: dove: use new restart hook

Hook these platforms restart code into the new restart hook rather than
using arch_reset().

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7190/1: restart: davinci: use new restart hook
Sekhar Nori [Mon, 5 Dec 2011 10:29:46 +0000 (11:29 +0100)]
ARM: 7190/1: restart: davinci: use new restart hook

Rather than using DaVinci specific davinci_soc_info based
restart hook, use the restart hook available in the machine
descriptor instead.

Tested on DM365 and AM18x EVMs.

v2:
Changed to use restart hook in machine descriptor
per Russell's comment.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: cns3xxx: use new restart hook
Russell King [Sat, 5 Nov 2011 15:32:23 +0000 (15:32 +0000)]
ARM: restart: cns3xxx: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: clps711x: use new restart hook
Russell King [Sat, 5 Nov 2011 17:41:52 +0000 (17:41 +0000)]
ARM: restart: clps711x: use new restart hook

Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: bcmring: use new restart hook
Russell King [Fri, 11 Nov 2011 16:43:45 +0000 (16:43 +0000)]
ARM: restart: bcmring: use new restart hook

Hook the Shark restart code into the new restart hook rather than
using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: at91: use new restart hook
Russell King [Thu, 3 Nov 2011 09:53:29 +0000 (09:53 +0000)]
ARM: restart: at91: use new restart hook

Rather than using a private function pointer, use the existing
arm_pm_restart function pointer instead.  We no longer need to enable
the I-cache in at91sam9_alt_reset() as the caches will now be on when
this function is called.

Update the function names to use the 'restart' terminology rather than
the 'reboot' terminology.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: restart: remove s3c24xx restart handler
Russell King [Thu, 3 Nov 2011 09:14:07 +0000 (09:14 +0000)]
ARM: restart: remove s3c24xx restart handler

Remove the s3c24xx restart handler, which is trying to work around
a chip bug by keeping caches on but flushed.  As we now only disable
caches when performing a soft reboot, there doesn't need to be a
work-around to do that.

Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoMerge branch 'restart-cleanup' into restart
Russell King [Thu, 5 Jan 2012 12:56:44 +0000 (12:56 +0000)]
Merge branch 'restart-cleanup' into restart

Conflicts:
arch/arm/kernel/setup.c

12 years agoMerge branch 'for-russell' of git://hansjkoch.de/git/linux-tcc into HEAD
Russell King [Thu, 5 Jan 2012 12:55:03 +0000 (12:55 +0000)]
Merge branch 'for-russell' of git://hansjkoch.de/git/linux-tcc into HEAD

Conflicts:
arch/arm/plat-omap/include/plat/common.h

12 years agoarm: Remove plat-tcc directory
Hans J. Koch [Thu, 22 Dec 2011 20:30:48 +0000 (21:30 +0100)]
arm: Remove plat-tcc directory

The Telechips ARM architecture is being removed. This patch
deletes the arch/arm/plat-tcc/ folder.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Harry Sievers <hsievers@csselectronic.com>
Signed-off-by: Hans J. Koch <hjk@hansjkoch.de>
12 years agoarm: Remove mach-tcc8k directory
Hans J. Koch [Thu, 22 Dec 2011 20:27:27 +0000 (21:27 +0100)]
arm: Remove mach-tcc8k directory

The Telechips ARM architecture is being removed. This patch
deletes the arch/arm/mach-tcc8k/ folder.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Harry Sievers <hsievers@csselectronic.com>
Signed-off-by: Hans J. Koch <hjk@hansjkoch.de>
12 years agoarm: Remove TCC subarch from Kconfig/Makefile
Hans J. Koch [Thu, 22 Dec 2011 19:46:34 +0000 (20:46 +0100)]
arm: Remove TCC subarch from Kconfig/Makefile

The Telechips subarchitecture is being completely removed.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Harry Sievers <hsievers@csselectronic.com>
Signed-off-by: Hans J. Koch <hjk@hansjkoch.de>
12 years agoMerge branch 'vmalloc' of git://git.linaro.org/people/nico/linux into devel-stable
Russell King [Wed, 4 Jan 2012 09:01:51 +0000 (09:01 +0000)]
Merge branch 'vmalloc' of git://git.linaro.org/people/nico/linux into devel-stable

12 years agoRemove Telechips ARM subarch from MAINTAINERS
Hans J. Koch [Thu, 22 Dec 2011 19:40:41 +0000 (20:40 +0100)]
Remove Telechips ARM subarch from MAINTAINERS

The ARM subarchitecture for Telechips SoCs isi being completely removed,
so there's no need for a MAINTAINERS entry.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Harry Sievers <hsievers@csselectronic.com>
Signed-off-by: Hans J. Koch <hjk@hansjkoch.de>
12 years agoARM: mach-sa1100: fix implicit use of page.h
Bjorn Helgaas [Tue, 3 Jan 2012 17:12:48 +0000 (17:12 +0000)]
ARM: mach-sa1100: fix implicit use of page.h

Fixes this build error:

arch/arm/mach-sa1100/nanoengine.c:75:11: error: 'PAGE_SHIFT' undeclared here (not in a function)

CC: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7261/1: clocksource/ux500-prcmu: fix sched_clock breakage
Linus Walleij [Mon, 2 Jan 2012 13:50:15 +0000 (14:50 +0100)]
ARM: 7261/1: clocksource/ux500-prcmu: fix sched_clock breakage

commit 2f0778afac79bd8d226225556858a636931eeabc adding
runtime-selectable sched_clock() forgot to patch this
driver down in drivers/clocksource, this patch fixes
the problem.

Reported-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7236/1: vic: always use simple ops
Jamie Iles [Wed, 14 Dec 2011 22:43:17 +0000 (23:43 +0100)]
ARM: 7236/1: vic: always use simple ops

Now that irq_domain_simple_ops are available for non-DT users, use them
in the VIC driver so that we don't get a NULL dereference in
irq_domain_to_irq() when registering the domain.

Cc: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7242/1: PL330: Detach the request from the pl330_thread when it finishes successful
Javi Merino [Wed, 21 Dec 2011 10:19:00 +0000 (11:19 +0100)]
ARM: 7242/1: PL330: Detach the request from the pl330_thread when it finishes successful

When a request has finished successfully and we are about to call its
callback, remove its pointer from the corresponding pl330_thread .
This prevents the core driver from calling its callback again if
pl330_release_channel() is called without first flushing the device.
When pl330_update() returns, the driver is allowed to free the pointer
to pl330_req so the core driver shouldn't be able to access it again.

Reference: <CAJe_ZhftO+481BfL0ErEcM_brfmSuTXkTEniLRYxxM2T7OM2QA@mail.gmail.com>

Signed-off-by: Javi Merino <javi.merino@arm.com>
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7184/1: fix $(CROSS_COMPILE) prefix missing from size invocation
Janusz Krzysztofik [Thu, 1 Dec 2011 21:45:47 +0000 (22:45 +0100)]
ARM: 7184/1: fix $(CROSS_COMPILE) prefix missing from size invocation

Otherwise, cross compilation may fail with error messages like:

...
size: arch/arm/boot/compressed/../../../../vmlinux: File format is ambiguous
size: Matching formats: elf32-littlearm elf32-littlearm-symbian elf32-littlearm-vxworks
  LD      arch/arm/boot/compressed/vmlinux
  arm-angstrom-linux-uclibcgnueabi-ld:--defsym _kernel_bss_size=: syntax error

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7257/1: EXYNOS: introduce arch/arm/mach-exynos/common.[ch]
Kukjin Kim [Tue, 27 Dec 2011 07:18:36 +0000 (08:18 +0100)]
ARM: 7257/1: EXYNOS: introduce arch/arm/mach-exynos/common.[ch]

This patch introduces common.[ch] which are used only in the
arch/arm/mach-exynos/ directory. The common.c file merges
the cpu.c, init.c, irq-combiner.c and irq-eint.c files which
are used commonly on EXYNOS SoCs and the common.h file replaces
with plat/exynos4.h file.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoRevert "ARM: move VMALLOC_END down temporarily for shmobile"
Nicolas Pitre [Tue, 3 Jan 2012 04:00:32 +0000 (23:00 -0500)]
Revert "ARM: move VMALLOC_END down temporarily for shmobile"

This reverts commit 0af362f8440a78b970d5f215e234420fa87d0f3f as shmobile
is not using a non-standard memory layout anymore.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
12 years agoARM: mach-shmobile: use standard 2MiB coherent DMA memory size
Magnus Damm [Tue, 3 Jan 2012 03:57:03 +0000 (22:57 -0500)]
ARM: mach-shmobile: use standard 2MiB coherent DMA memory size

The 158MiB memory area was used to support HD
resolution multimedia workloads using the same
legacy memory allocating solution as on SH.

There are no in-tree kernel dependencies on the
158MiB setting, and future development should
reserve and allocate memory using some other
method like for instance CMA.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
12 years agoMerge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Mon, 2 Jan 2012 20:34:03 +0000 (12:34 -0800)]
Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6

* 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6:
  dt/device: Fix auxdata matching to handle entries without a name override

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 2 Jan 2012 03:36:08 +0000 (19:36 -0800)]
Merge git://git./linux/kernel/git/davem/net

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  netfilter: ctnetlink: fix timeout calculation
  ipvs: try also real server with port 0 in backup server
  skge: restore rx multicast filter on resume and after config changes
  mlx4_en: nullify cq->vector field when closing completion queue

12 years agoMerge branch 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Sat, 31 Dec 2011 19:55:06 +0000 (11:55 -0800)]
Merge branch 'fix/asoc' of git://git./linux/kernel/git/tiwai/sound

* 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: wm8776: add missing break in sample size switch

12 years agogspca: Fix falling back to lower isoc alt settings
Mauro Carvalho Chehab [Sat, 31 Dec 2011 13:32:03 +0000 (11:32 -0200)]
gspca: Fix falling back to lower isoc alt settings

The current gspca core code has a regression where it no longer properly
falls back to lower alt settings when there is not enough bandwidth.

This causes many iso based usb-1 cameras to not work when plugged into a
usb2 hub or a sandybridge chipset motherboard!

This patch fixes this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agofutex: Fix uninterruptible loop due to gate_area
Hugh Dickins [Sat, 31 Dec 2011 19:44:01 +0000 (11:44 -0800)]
futex: Fix uninterruptible loop due to gate_area

It was found (by Sasha) that if you use a futex located in the gate
area we get stuck in an uninterruptible infinite loop, much like the
ZERO_PAGE issue.

While looking at this problem, PeterZ realized you'll get into similar
trouble when hitting any install_special_pages() mapping.  And are there
still drivers setting up their own special mmaps without page->mapping,
and without special VM or pte flags to make get_user_pages fail?

In most cases, if page->mapping is NULL, we do not need to retry at all:
Linus points out that even /proc/sys/vm/drop_caches poses no problem,
because it ends up using remove_mapping(), which takes care not to
interfere when the page reference count is raised.

But there is still one case which does need a retry: if memory pressure
called shmem_writepage in between get_user_pages_fast dropping page
table lock and our acquiring page lock, then the page gets switched from
filecache to swapcache (and ->mapping set to NULL) whatever the refcount.
Fault it back in to get the page->mapping needed for key->shared.inode.

Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agonetfilter: ctnetlink: fix timeout calculation
Xi Wang [Fri, 30 Dec 2011 15:40:17 +0000 (10:40 -0500)]
netfilter: ctnetlink: fix timeout calculation

The sanity check (timeout < 0) never works; the dividend is unsigned
and so is the division, which should have been a signed division.

long timeout = (ct->timeout.expires - jiffies) / HZ;
if (timeout < 0)
timeout = 0;

This patch converts the time values to signed for the division.

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agoipvs: try also real server with port 0 in backup server
Julian Anastasov [Fri, 30 Dec 2011 05:19:02 +0000 (14:19 +0900)]
ipvs: try also real server with port 0 in backup server

We should not forget to try for real server with port 0
in the backup server when processing the sync message. We should
do it in all cases because the backup server can use different
forwarding method.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agoskge: restore rx multicast filter on resume and after config changes
Florian Zumbiehl [Fri, 30 Dec 2011 17:30:09 +0000 (17:30 +0000)]
skge: restore rx multicast filter on resume and after config changes

Restore skge hardware registers for multicast filtering to their
appropriate values after system resume and after hardware restarts
that are done when changing certain settings.

Signed-off-by: Florian Zumbiehl <florz@florz.de>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomlx4_en: nullify cq->vector field when closing completion queue
Yevgeny Petrilin [Thu, 29 Dec 2011 05:49:58 +0000 (05:49 +0000)]
mlx4_en: nullify cq->vector field when closing completion queue

Caused loss of connectivity when changing ring size.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur...
Linus Torvalds [Fri, 30 Dec 2011 21:45:34 +0000 (13:45 -0800)]
Merge branch 'fixes' of ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm

* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
  ARM: 7237/1: PL330: Fix driver freeze
  ARM: 7197/1: errata: Remove SMP dependency for erratum 751472
  ARM: 7196/1: errata: Remove SMP dependency for erratum 720789
  ARM: 7220/1: mmc: mmci: Fixup error handling for dma
  ARM: 7214/1: mmc: mmci: Fixup handling of MCI_STARTBITERR

12 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Fri, 30 Dec 2011 21:43:45 +0000 (13:43 -0800)]
Merge branch 'fixes' of git://git./linux/kernel/git/arm/arm-soc

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: plat-orion: make gpiochip label unique
  enable uncompress log on cpuimx35sd
  cpuimx35: fix touchscreen support
  cpuimx35sd: fix Kconfig
  clock-imx35: fix reboot in internal boot mode
  dma: MX3_IPU fix depends
  imx_v4_v5_defconfig: update default configuration
  cpuimx25sd: fix Kconfig
  arm/imx: fix cpufreq section mismatch
  ARM:imx:fix pwm period value
  ARM: OMAP: hwmod data: fix iva and mailbox hwmods for OMAP 3

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 30 Dec 2011 21:42:41 +0000 (13:42 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: sentelic - fix retrieving number of buttons
  Input: sentelic - release mutex upon register write failure

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Fri, 30 Dec 2011 21:34:22 +0000 (13:34 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: disable use of dcache for readdir etc.

12 years agoMerge branch 'v3.2-samsung-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 30 Dec 2011 21:34:00 +0000 (13:34 -0800)]
Merge branch 'v3.2-samsung-fixes-4' of git://git./linux/kernel/git/kgene/linux-samsung

* 'v3.2-samsung-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Remove duplicated SROMC static memory mapping
  ARM: SAMSUNG: Fix build error when selecting CPU_FREQ_S3C24XX_DEBUGFS on S3C2440

12 years agoRevert "clockevents: Set noop handler in clockevents_exchange_device()"
Linus Torvalds [Fri, 30 Dec 2011 21:24:40 +0000 (13:24 -0800)]
Revert "clockevents: Set noop handler in clockevents_exchange_device()"

This reverts commit de28f25e8244c7353abed8de0c7792f5f883588c.

It results in resume problems for various people. See for example

  http://thread.gmane.org/gmane.linux.kernel/1233033
  http://thread.gmane.org/gmane.linux.kernel/1233389
  http://thread.gmane.org/gmane.linux.kernel/1233159
  http://thread.gmane.org/gmane.linux.kernel/1227868/focus=1230877

and the fedora and ubuntu bug reports

  https://bugzilla.redhat.com/show_bug.cgi?id=767248
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/904569

which got bisected down to the stable version of this commit.

Reported-by: Jonathan Nieder <jrnieder@gmail.com>
Reported-by: Phil Miller <mille121@illinois.edu>
Reported-by: Philip Langdale <philipl@overt.org>
Reported-by: Tim Gardner <tim.gardner@canonical.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg KH <gregkh@suse.de>
Cc: stable@kernel.org # for stable kernels that applied the original
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Fri, 30 Dec 2011 20:13:03 +0000 (12:13 -0800)]
Merge git://www.linux-watchdog.org/linux-watchdog

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: iTCO_wdt.c - problems with newer hardware due to SMI clearing (part 2)
  watchdog: hpwdt: Changes to handle NX secure bit in 32bit path
  watchdog: sp805: Fix section mismatch in ID table.
  watchdog: move coh901327 state holders

12 years agoMerge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro...
Linus Torvalds [Fri, 30 Dec 2011 01:36:15 +0000 (17:36 -0800)]
Merge branch 'iommu/fixes' of git://git./linux/kernel/git/joro/iommu

* 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu: Initialize domain->handler in iommu_domain_alloc()

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 30 Dec 2011 01:35:33 +0000 (17:35 -0800)]
Merge git://git./linux/kernel/git/davem/net

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  packet: fix possible dev refcnt leak when bind fail
  netem: dont call vfree() under spinlock and BH disabled
  netfilter: ctnetlink: fix scheduling while atomic if helper is autoloaded
  netfilter: ctnetlink: fix return value of ctnetlink_get_expect()

12 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 30 Dec 2011 01:09:16 +0000 (17:09 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86: Fix raw_spin_unlock_irqrestore() usage
  oprofile, arm/sh: Fix oprofile_arch_exit() linkage issue

12 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Fri, 30 Dec 2011 01:05:45 +0000 (17:05 -0800)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: log all dirty inodes in xfs_fs_sync_fs
  xfs: log the inode in ->write_inode calls for kupdate

12 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 30 Dec 2011 00:33:37 +0000 (16:33 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: fix blk_queue_end_tag()
  block: re-use existing 'reading' variable instead of checking direction again
  block, cfq: fix empty queue crash caused by request merge

12 years agomm: hugetlb: fix non-atomic enqueue of huge page
Hillf Danton [Wed, 28 Dec 2011 23:57:16 +0000 (15:57 -0800)]
mm: hugetlb: fix non-atomic enqueue of huge page

If a huge page is enqueued under the protection of hugetlb_lock, then the
operation is atomic and safe.

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: <stable@vger.kernel.org> [2.6.37+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoprocfs: do not confuse jiffies with cputime64_t
Andreas Schwab [Wed, 28 Dec 2011 23:57:15 +0000 (15:57 -0800)]
procfs: do not confuse jiffies with cputime64_t

Commit 2a95ea6c0d129b4 ("procfs: do not overflow get_{idle,iowait}_time
for nohz") did not take into account that one some architectures jiffies
and cputime use different units.

This causes get_idle_time() to return numbers in the wrong units, making
the idle time fields in /proc/stat wrong.

Instead of converting the usec value returned by
get_cpu_{idle,iowait}_time_us to units of jiffies, use the new function
usecs_to_cputime64 to convert it to the correct unit of cputime64_t.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Artem S. Tashkinov" <t.artem@mailcity.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agomm/mempolicy.c: refix mbind_range() vma issue
KOSAKI Motohiro [Wed, 28 Dec 2011 23:57:11 +0000 (15:57 -0800)]
mm/mempolicy.c: refix mbind_range() vma issue

commit 8aacc9f550 ("mm/mempolicy.c: fix pgoff in mbind vma merge") is the
slightly incorrect fix.

Why? Think following case.

1. map 4 pages of a file at offset 0

   [0123]

2. map 2 pages just after the first mapping of the same file but with
   page offset 2

   [0123][23]

3. mbind() 2 pages from the first mapping at offset 2.
   mbind_range() should treat new vma is,

   [0123][23]
     |23|
     mbind vma

   but it does

   [0123][23]
     |01|
     mbind vma

   Oops. then, it makes wrong vma merge and splitting ([01][0123] or similar).

This patch fixes it.

[testcase]
  test result - before the patch

case4: 126: test failed. expect '2,4', actual '2,2,2'
        case5: passed
case6: passed
case7: passed
case8: passed
case_n: 246: test failed. expect '4,2', actual '1,4'

------------[ cut here ]------------
kernel BUG at mm/filemap.c:135!
invalid opcode: 0000 [#4] SMP DEBUG_PAGEALLOC

(snip long bug on messages)

  test result - after the patch

case4: passed
        case5: passed
case6: passed
case7: passed
case8: passed
case_n: passed

  source:  mbind_vma_test.c
============================================================
 #include <numaif.h>
 #include <numa.h>
 #include <sys/mman.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>

static unsigned long pagesize;
void* mmap_addr;
struct bitmask *nmask;
char buf[1024];
FILE *file;
char retbuf[10240] = "";
int mapped_fd;

char *rubysrc = "ruby -e '\
  pid = %d; \
  vstart = 0x%llx; \
  vend = 0x%llx; \
  s = `pmap -q #{pid}`; \
  rary = []; \
  s.each_line {|line|; \
    ary=line.split(\" \"); \
    addr = ary[0].to_i(16); \
    if(vstart <= addr && addr < vend) then \
      rary.push(ary[1].to_i()/4); \
    end; \
  }; \
  print rary.join(\",\"); \
'";

void init(void)
{
void* addr;
char buf[128];

nmask = numa_allocate_nodemask();
numa_bitmask_setbit(nmask, 0);

pagesize = getpagesize();

sprintf(buf, "%s", "mbind_vma_XXXXXX");
mapped_fd = mkstemp(buf);
if (mapped_fd == -1)
perror("mkstemp "), exit(1);
unlink(buf);

if (lseek(mapped_fd, pagesize*8, SEEK_SET) < 0)
perror("lseek "), exit(1);
if (write(mapped_fd, "\0", 1) < 0)
perror("write "), exit(1);

addr = mmap(NULL, pagesize*8, PROT_NONE,
    MAP_SHARED, mapped_fd, 0);
if (addr == MAP_FAILED)
perror("mmap "), exit(1);

if (mprotect(addr+pagesize, pagesize*6, PROT_READ|PROT_WRITE) < 0)
perror("mprotect "), exit(1);

mmap_addr = addr + pagesize;

/* make page populate */
memset(mmap_addr, 0, pagesize*6);
}

void fin(void)
{
void* addr = mmap_addr - pagesize;
munmap(addr, pagesize*8);

memset(buf, 0, sizeof(buf));
memset(retbuf, 0, sizeof(retbuf));
}

void mem_bind(int index, int len)
{
int err;

err = mbind(mmap_addr+pagesize*index, pagesize*len,
    MPOL_BIND, nmask->maskp, nmask->size, 0);
if (err)
perror("mbind "), exit(err);
}

void mem_interleave(int index, int len)
{
int err;

err = mbind(mmap_addr+pagesize*index, pagesize*len,
    MPOL_INTERLEAVE, nmask->maskp, nmask->size, 0);
if (err)
perror("mbind "), exit(err);
}

void mem_unbind(int index, int len)
{
int err;

err = mbind(mmap_addr+pagesize*index, pagesize*len,
    MPOL_DEFAULT, NULL, 0, 0);
if (err)
perror("mbind "), exit(err);
}

void Assert(char *expected, char *value, char *name, int line)
{
if (strcmp(expected, value) == 0) {
fprintf(stderr, "%s: passed\n", name);
return;
}
else {
fprintf(stderr, "%s: %d: test failed. expect '%s', actual '%s'\n",
name, line,
expected, value);
// exit(1);
}
}

/*
      AAAA
    PPPPPPNNNNNN
    might become
    PPNNNNNNNNNN
    case 4 below
*/
void case4(void)
{
init();
sprintf(buf, rubysrc, getpid(), mmap_addr, mmap_addr+pagesize*6);

mem_bind(0, 4);
mem_unbind(2, 2);

file = popen(buf, "r");
fread(retbuf, sizeof(retbuf), 1, file);
Assert("2,4", retbuf, "case4", __LINE__);

fin();
}

/*
       AAAA
 PPPPPPNNNNNN
 might become
 PPPPPPPPPPNN
 case 5 below
*/
void case5(void)
{
init();
sprintf(buf, rubysrc, getpid(), mmap_addr, mmap_addr+pagesize*6);

mem_bind(0, 2);
mem_bind(2, 2);

file = popen(buf, "r");
fread(retbuf, sizeof(retbuf), 1, file);
Assert("4,2", retbuf, "case5", __LINE__);

fin();
}

/*
    AAAA
PPPPNNNNXXXX
might become
PPPPPPPPPPPP 6
*/
void case6(void)
{
init();
sprintf(buf, rubysrc, getpid(), mmap_addr, mmap_addr+pagesize*6);

mem_bind(0, 2);
mem_bind(4, 2);
mem_bind(2, 2);

file = popen(buf, "r");
fread(retbuf, sizeof(retbuf), 1, file);
Assert("6", retbuf, "case6", __LINE__);

fin();
}

/*
    AAAA
PPPPNNNNXXXX
might become
PPPPPPPPXXXX 7
*/
void case7(void)
{
init();
sprintf(buf, rubysrc, getpid(), mmap_addr, mmap_addr+pagesize*6);

mem_bind(0, 2);
mem_interleave(4, 2);
mem_bind(2, 2);

file = popen(buf, "r");
fread(retbuf, sizeof(retbuf), 1, file);
Assert("4,2", retbuf, "case7", __LINE__);

fin();
}

/*
    AAAA
PPPPNNNNXXXX
might become
PPPPNNNNNNNN 8
*/
void case8(void)
{
init();
sprintf(buf, rubysrc, getpid(), mmap_addr, mmap_addr+pagesize*6);

mem_bind(0, 2);
mem_interleave(4, 2);
mem_interleave(2, 2);

file = popen(buf, "r");
fread(retbuf, sizeof(retbuf), 1, file);
Assert("2,4", retbuf, "case8", __LINE__);

fin();
}

void case_n(void)
{
init();
sprintf(buf, rubysrc, getpid(), mmap_addr, mmap_addr+pagesize*6);

/* make redundunt mappings [0][1234][34][7] */
mmap(mmap_addr + pagesize*4, pagesize*2, PROT_READ|PROT_WRITE,
     MAP_FIXED|MAP_SHARED, mapped_fd, pagesize*3);

/* Expect to do nothing. */
mem_unbind(2, 2);

file = popen(buf, "r");
fread(retbuf, sizeof(retbuf), 1, file);
Assert("4,2", retbuf, "case_n", __LINE__);

fin();
}

int main(int argc, char** argv)
{
case4();
case5();
case6();
case7();
case8();
case_n();

return 0;
}
=============================================================

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Caspar Zhang <caspar@casparzhang.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: <stable@vger.kernel.org> [3.1.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agogspca: Fix bulk mode cameras no longer working (regression fix)
Hans de Goede [Thu, 29 Dec 2011 21:09:21 +0000 (19:09 -0200)]
gspca: Fix bulk mode cameras no longer working (regression fix)

The new iso bandwidth calculation code accidentally has broken support
for bulk mode cameras. This has broken the following drivers:
finepix, jeilinj, ovfx2, ov534, ov534_9, se401, sq905, sq905c, sq930x,
stv0680, vicam.

Thix patch fixes this. Fix tested with: se401, sq905, sq905c, stv0680 & vicam
cams.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>