8 years agoAtmel: move console default platform_device to serial driver
Jean-Christophe PLAGNIOL-VILLARD [Wed, 15 Feb 2012 16:24:07 +0000]
Atmel: move console default platform_device to serial driver

This variable spread on every SoC that is using the atmel_serial.c
driver can be included directly into the latter.

This will allow to compile multiple soc in the same kernel.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: kernel@avr32linux.org

8 years agoARM: at91: merge SRAM Memory banks thanks to mirroring
Jean-Christophe PLAGNIOL-VILLARD [Wed, 7 Dec 2011 10:34:47 +0000]
ARM: at91: merge SRAM Memory banks thanks to mirroring

On at91sam9260 and at91sam9g20 the SRAM banks are mirrored. We can
merge them together to be able to have bigger and continuous
internal RAM.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91: finally drop at91_sys_read/write
Jean-Christophe PLAGNIOL-VILLARD [Wed, 15 Feb 2012 13:27:34 +0000]
ARM: at91: finally drop at91_sys_read/write

Remove at91_sys_read/write() from io.h file. This function
is not used anymore and was a stopper on the way to single
zImage kernel for AT91.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/rtc-at91sam9: pass the GPBR to use via resources
Jean-Christophe PLAGNIOL-VILLARD [Wed, 15 Feb 2012 13:24:46 +0000]
ARM: at91/rtc-at91sam9: pass the GPBR to use via resources

The GPBR registers are used for storing RTC values. The GPBR registers
to use are now provided using standard resource entry. The array is
filled in SoC specific code.
rtc-at91sam9 RTT as RTC driver is modified to retrieve this information.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
[nicolas.ferre@atmel.com: rework resources assignment]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Ryan Mallon <rmallon@gmail.com>

8 years agoARM: at91:rtc/rtc-at91sam9: ioremap register bank
Jean-Christophe PLAGNIOL-VILLARD [Sun, 18 Sep 2011 02:17:54 +0000]
ARM: at91:rtc/rtc-at91sam9: ioremap register bank

Instead of computing virtual address with AT91_VA_BASE_SYS, use the
appropriate ioremap() call on the driver "memory" resource.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/rtc-at91sam9: each SoC can select the RTT device to use
Jean-Christophe PLAGNIOL-VILLARD [Wed, 15 Feb 2012 12:51:37 +0000]
ARM: at91/rtc-at91sam9: each SoC can select the RTT device to use

For the RTT as RTC driver rtc-at91sam9, the platform_device structure
is filled during SoC initialization. This will allow to convert this
RTC driver as a standard platform driver.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/PMC: make register base soc independent
Jean-Christophe PLAGNIOL-VILLARD [Fri, 25 Nov 2011 01:59:46 +0000]
ARM: at91/PMC: make register base soc independent

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Ryan Mallon <rmallon@gmail.com>

8 years agoARM: at91/PMC: move assignment out of printf
Nicolas Ferre [Thu, 23 Feb 2012 08:44:37 +0000]
ARM: at91/PMC: move assignment out of printf

We move the assignment of values of register out of the
seq_printf() calls: It is obviously more readable.

Reported-by: Ryan Mallon <rmallon@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/pm_slowclock: add runtime detection of memory contoller
Jean-Christophe PLAGNIOL-VILLARD [Wed, 22 Feb 2012 16:50:55 +0000]
ARM: at91/pm_slowclock: add runtime detection of memory contoller

This will allow to have all SoC in one kernel image.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91: make sdram/ddr register base soc independent
Jean-Christophe PLAGNIOL-VILLARD [Mon, 13 Feb 2012 04:58:53 +0000]
ARM: at91: make sdram/ddr register base soc independent

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91: move at91rm9200 sdramc defines to at91rm9200_sdramc.h
Jean-Christophe PLAGNIOL-VILLARD [Tue, 15 Nov 2011 18:58:31 +0000]
ARM: at91: move at91rm9200 sdramc defines to at91rm9200_sdramc.h

This cleanup is done to allow to have multiple SoC in the same image.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/pm_slowclock: function slow_clock() accepts parameters
Jean-Christophe PLAGNIOL-VILLARD [Wed, 22 Feb 2012 16:50:54 +0000]
ARM: at91/pm_slowclock: function slow_clock() accepts parameters

Change slow_clock()/at91_slow_clock() prototype to accept the PMC
base address and one or two RAM controller addresses by parameters.
The r0, r1 and r2 registers are used differently and preserved during
function call.
Those values are defined in pm.c and slow_clock() function is called
from there with its new parameters.

This will allow to have a soc independent pm_slowclock.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Ached-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/pm_slowclock: rename register to named define
Jean-Christophe PLAGNIOL-VILLARD [Wed, 22 Feb 2012 16:50:53 +0000]
ARM: at91/pm_slowclock: rename register to named define

This patch will give a name to ARM registers in the assembly
source code. It is done to simplify the code reading and
the passing of parameters to functions.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/ST: remove not needed casts
Nicolas Ferre [Mon, 20 Feb 2012 10:13:13 +0000]
ARM: at91/ST: remove not needed casts

Remove the unnecessary (void) cast on at91_st_read()
return value.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Ryan Mallon <rmallon@gmail.com>

8 years agoARM: at91: make ST (System Timer) soc independent
Jean-Christophe PLAGNIOL-VILLARD [Mon, 20 Feb 2012 10:07:39 +0000]
ARM: at91: make ST (System Timer) soc independent

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Ryan Mallon <rmallon@gmail.com>

8 years agoARM: at91: make matrix register base soc independent
Jean-Christophe PLAGNIOL-VILLARD [Sun, 27 Nov 2011 15:15:50 +0000]
ARM: at91: make matrix register base soc independent

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Ryan Mallon <rmallon@gmail.com>
Cc: linux-usb@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

8 years agoARM: at91/at91x40: remove use of at91_sys_read/write
Jean-Christophe PLAGNIOL-VILLARD [Sun, 5 Feb 2012 12:35:39 +0000]
ARM: at91/at91x40: remove use of at91_sys_read/write

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91: factorise duplicated at91sam9 idle
Jean-Christophe PLAGNIOL-VILLARD [Sun, 5 Feb 2012 12:25:32 +0000]
ARM: at91: factorise duplicated at91sam9 idle

Remove duplicated at91sam9xxxx_idle() functions introduced
by commit c9dfafb "ARM: mach-at91: move special idle code out of line".
Replace by a generic at91sam9_idle() function in setup.c common
location.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoMerge remote-tracking branch 'armsoc/at91/9x5' into at91-3.4-base2
Nicolas Ferre [Sat, 11 Feb 2012 13:33:03 +0000]
Merge remote-tracking branch 'armsoc/at91/9x5' into at91-3.4-base2

8 years agoMerge remote-tracking branch 'armsoc/at91/device-board' into at91-3.4-base2
Nicolas Ferre [Sat, 11 Feb 2012 13:32:50 +0000]
Merge remote-tracking branch 'armsoc/at91/device-board' into at91-3.4-base2

8 years agoMerge branch 'at91-3.4-base+9x5' of git://github.com/at91linux/linux-at91 into at91/9x5
Olof Johansson [Tue, 7 Feb 2012 23:12:58 +0000]
Merge branch 'at91-3.4-base+9x5' of git://github.com/at91linux/linux-at91 into at91/9x5

* 'at91-3.4-base+9x5' of git://github.com/at91linux/linux-at91:
  ARM: at91/at91sam9x5: Device tree definition files
  ARM: at91/at91sam9x5: SoC basic support
  ARM: at91/at91sam9x5: Configuration and Makefile
  ARM: at91/at91sam9x5: clock management for at91sam9x5 chip family
  ARM: at91/at91sam9x5: PMC header file
  ARM: at91/at91sam9x5: overall definition

8 years agoMerge branch 'at91-3.4-base+pm_cleanup' of git://github.com/at91linux/linux-at91...
Olof Johansson [Tue, 7 Feb 2012 23:12:42 +0000]
Merge branch 'at91-3.4-base+pm_cleanup' of git://github.com/at91linux/linux-at91 into at91/pm_cleanup

* 'at91-3.4-base+pm_cleanup' of git://github.com/at91linux/linux-at91:
  ARM: at91: implement the standby function for pm/cpuidle
  ARM: at91: remove wait_for_interrupt definition
  ARM: at91: declare header name
  ARM: at91: coding style fixes

8 years agoMerge branch 'at91-3.4-base+device_board' of git://github.com/at91linux/linux-at91...
Olof Johansson [Tue, 7 Feb 2012 23:12:24 +0000]
Merge branch 'at91-3.4-base+device_board' of git://github.com/at91linux/linux-at91 into at91/device-board

* 'at91-3.4-base+device_board' of git://github.com/at91linux/linux-at91:
  ARM: at91: Add external RTC for Flexibity board
  ARM: at91: add Atmel ISI and ov2640 support on sam9m10g45 board
  ARM: at91: add clock selection parameter for at91_add_device_isi()
  ARM: at91: Update struct atmel_nand_data to support PMECC
  ARM: at91/dma: DMA controller registering with DT support
  ARM: at91/dma: remove platform data from DMA controller

8 years agoMerge branch 'at91-3.4-base' of git://github.com/at91linux/linux-at91 into at91/base
Olof Johansson [Tue, 7 Feb 2012 23:11:31 +0000]
Merge branch 'at91-3.4-base' of git://github.com/at91linux/linux-at91 into at91/base

* 'at91-3.4-base' of git://github.com/at91linux/linux-at91:
  ARM: at91: code removal of CAP9 SoC

Conflicts:
arch/arm/mach-at91/at91cap9.c

8 years agoMerge tag 'v3.3-rc2' into depends/rmk/for-armsoc
Olof Johansson [Tue, 7 Feb 2012 23:04:15 +0000]
Merge tag 'v3.3-rc2' into depends/rmk/for-armsoc

There were conflicts between fixes going in after 3.3-rc1 and
Russell's stable arm-soc base branch. Resolving it in the dependency
branch so that each topic branch shares the same resolution.

Conflicts:
arch/arm/mach-at91/at91cap9.c
arch/arm/mach-at91/at91sam9g45.c

8 years agoARM: at91/at91sam9x5: Device tree definition files
Nicolas Ferre [Thu, 26 Jan 2012 10:59:20 +0000]
ARM: at91/at91sam9x5: Device tree definition files

Device tree include file for the AT91SAM9x5 SoC family.
An additional .dtsi file is created to describe the generic
SAM9x5 CPU Module (CM).
Device tree source files for each Evaluation Kit that are using
the generic CPU Module and the carrier board. The selection of
available peripherals is done in this .dts file.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/at91sam9x5: SoC basic support
Dan Liang [Thu, 10 Mar 2011 18:08:55 +0000]
ARM: at91/at91sam9x5: SoC basic support

Add at91sam9x5.c SoC file: Define clock resources
and some initialization code.

Signed-off-by: Dan Liang <dan.liang@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

8 years agoARM: at91/at91sam9x5: Configuration and Makefile
Nicolas Ferre [Mon, 23 Jan 2012 15:16:44 +0000]
ARM: at91/at91sam9x5: Configuration and Makefile

Kconfig and Makefile entries for SAM9x5 family.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/at91sam9x5: clock management for at91sam9x5 chip family
Nicolas Ferre [Thu, 10 Mar 2011 18:08:54 +0000]
ARM: at91/at91sam9x5: clock management for at91sam9x5 chip family

Several changes to PMC have to be managed for adding this support:
- alternate prescaler location for both MCKR and PCKR
- alternate CSS length for PCKR
- added cpu_is_at91sam9x5() to functional switches
- manage UTMI bias like sam9g45 chip family

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

8 years agoARM: at91/at91sam9x5: PMC header file
Nicolas Ferre [Thu, 10 Mar 2011 18:08:53 +0000]
ARM: at91/at91sam9x5: PMC header file

Add at91sam9x5 chips family support in PMC header file:
Alternate prescaler location and CSS lenght for PCKR is added.
The new Peripheral Control Register management is added.
Protection mode register is modified to complete its management.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

8 years agoARM: at91/at91sam9x5: overall definition
Dan Liang [Thu, 10 Mar 2011 18:08:52 +0000]
ARM: at91/at91sam9x5: overall definition

Add the definitions of peripheral and system registers for sam9x5 chips family.

Signed-off-by: Dan Liang <dan.liang@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

8 years agoARM: at91: Add external RTC for Flexibity board
Maxim Osipov [Sat, 7 May 2011 11:47:00 +0000]
ARM: at91: Add external RTC for Flexibity board

This patch enables external RTC support on AT91 Flexibity board.

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91: add Atmel ISI and ov2640 support on sam9m10g45 board
Josh Wu [Sat, 22 Oct 2011 07:17:40 +0000]
ARM: at91: add Atmel ISI and ov2640 support on sam9m10g45 board

This patch adds:
- ov2640 sensor in at91sam9m10g45ek board
- support to use PCK as ISI_MCK. PCK's parent is managed at
  SoC level, e.g. at91sam9g45_devices.c

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

8 years agoARM: at91: add clock selection parameter for at91_add_device_isi()
Josh Wu [Sat, 22 Oct 2011 07:17:39 +0000]
ARM: at91: add clock selection parameter for at91_add_device_isi()

Add parameter and change existing call in at91sam9263_devices.c.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

8 years agoARM: at91: Update struct atmel_nand_data to support PMECC
Hong Xu [Thu, 8 Dec 2011 04:44:21 +0000]
ARM: at91: Update struct atmel_nand_data to support PMECC

User will use the newly added field 'correction_cap' and
'sector_size' to pass PMECC parameters to driver.

Signed-off-by: Hong Xu <hong.xu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91/dma: DMA controller registering with DT support
Nicolas Ferre [Mon, 10 Oct 2011 14:50:43 +0000]
ARM: at91/dma: DMA controller registering with DT support

Device tree support on at91sam9g45 family SoC. Only call
platform_device_register() if no dma-controller node is
found in device tree.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>

8 years agoARM: at91/dma: remove platform data from DMA controller
Nicolas Ferre [Mon, 10 Oct 2011 12:55:17 +0000]
ARM: at91/dma: remove platform data from DMA controller

DMA controller can deduce its configuration data from
the platform. Remove the platform data and match device
types with the compatible ones.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>

8 years agoARM: at91: implement the standby function for pm/cpuidle
Daniel Lezcano [Tue, 24 Jan 2012 23:56:08 +0000]
ARM: at91: implement the standby function for pm/cpuidle

This patch groups the self-refresh on/cpu_do_idle/self-refresh off into
a single 'standby' function.

The standby routine for rm9200 has been turned into an asm routine to have
a better control of the self refresh and to prevent a memory access when
running this code.

Draining the write buffer is done automatically when switching for the self
refresh on sam9, so the instruction is added to the rm9200 only.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91: remove wait_for_interrupt definition
Daniel Lezcano [Tue, 24 Jan 2012 23:56:07 +0000]
ARM: at91: remove wait_for_interrupt definition

All the "wait_for_interrupt" definition are aliases to cpu_do_idle.
Only the rm9200 has an asm routine to switch to wfi. But the cpu_do_idle
for this platform has exactly the same asm routine.

arch/arm/mm/proc-arm920.S
..
ENTRY(cpu_arm920_do_idle)
        mcr     p15, 0, r0, c7, c0, 4           @ Wait for interrupt
..

Then it is safe to invoke cpu_do_idle for this platform. As all the
wait_for_interrupts are definition for cpu_do_idle, let's remove it
and replace its invokation by cpu_do_idle.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91: declare header name
Daniel Lezcano [Tue, 24 Jan 2012 23:56:06 +0000]
ARM: at91: declare header name

Add the header and define the macro to prevent multiple inclusion
like the others headers.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91: coding style fixes
Daniel Lezcano [Tue, 24 Jan 2012 23:56:05 +0000]
ARM: at91: coding style fixes

This patch is mindless and does only fix the line length.
The purpose is to facilitate the review of the next patches.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoARM: at91: code removal of CAP9 SoC
Jean-Christophe PLAGNIOL-VILLARD [Thu, 26 Jan 2012 13:07:09 +0000]
ARM: at91: code removal of CAP9 SoC

Following removal announce and addition to feature-removal-schedule.txt,
here is the actual source code deletion for Atmel CAP9 family.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

8 years agoMerge remote-tracking branch 'armsoc/depends/rmk/for-armsoc' into at91-3.4-base
Nicolas Ferre [Fri, 3 Feb 2012 11:32:26 +0000]
Merge remote-tracking branch 'armsoc/depends/rmk/for-armsoc' into at91-3.4-base

Conflicts:
arch/arm/mach-at91/at91cap9.c
arch/arm/mach-at91/at91sam9g45.c

8 years agoLinux 3.3-rc2
Linus Torvalds [Tue, 31 Jan 2012 21:31:54 +0000]
Linux 3.3-rc2

8 years agoMerge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream
Linus Torvalds [Tue, 31 Jan 2012 17:23:59 +0000]
Merge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream

There are few important bug fixes for LogFS

* tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream:
  Logfs: Allow NULL block_isbad() methods
  logfs: Grow inode in delete path
  logfs: Free areas before calling generic_shutdown_super()
  logfs: remove useless BUG_ON
  MAINTAINERS: Add Prasad Joshi in LogFS maintiners
  logfs: Propagate page parameter to __logfs_write_inode
  logfs: set superblock shutdown flag after generic sb shutdown
  logfs: take write mutex lock during fsync and sync
  logfs: Prevent memory corruption
  logfs: update page reference count for pined pages

Fix up conflict in fs/logfs/dev_mtd.c due to semantic change in what
"mtd->block_isbad" means in commit f2933e86ad93: "Logfs: Allow NULL
block_isbad() methods" clashing with the abstraction changes in the
commits 7086c19d0742: "mtd: introduce mtd_block_isbad interface" and
d58b27ed58a3: "logfs: do not use 'mtd->block_isbad' directly".

This resolution takes the semantics from commit f2933e86ad93, and just
makes mtd_block_isbad() return zero (false) if the 'block_isbad'
function is NULL.  But that also means that now "mtd_can_have_bb()"
always returns 0.

Now, "mtd_block_markbad()" will obviously return an error if the
low-level driver doesn't support bad blocks, so this is somewhat
non-symmetric, but it actually makes sense if a NULL "block_isbad"
function is considered to mean "I assume that all my blocks are always
good".

8 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Tue, 31 Jan 2012 01:08:40 +0000]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (w83627ehf) Disable setting DC mode for pwm2, pwm3 on NCT6776F
  hwmon: (sht15) fix bad error code
  MAINTAINERS: Drop maintainer for MAX1668 hwmon driver
  MAINTAINERS: Add hwmon entries for Wolfson
  hwmon: (f71805f) Fix clamping of temperature limits

8 years agoMerge branch 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Tue, 31 Jan 2012 01:06:26 +0000]
Merge branch 'for-torvalds' of git://git./linux/kernel/git/linusw/linux-pinctrl

Here are some fixes to the pin control system that has accumulated since
-rc1.  Mainly Tony Lindgren fixed the module load/unload logic and the
rest are minor fixes and documentation.

* 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: add checks for empty function names
  pinctrl: fix pinmux_hog_maps when ctrl_dev_name is not set
  pinctrl: fix some pinmux typos
  pinctrl: free debugfs entries when unloading a pinmux driver
  pinctrl: unbreak error messages
  Documentation/pinctrl: fix a few syntax errors in code examples
  pinctrl: fix pinconf_pins_show iteration

8 years agoMerge tag 'tty-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Mon, 30 Jan 2012 23:17:21 +0000]
Merge tag 'tty-3.3-rc1' of git://git./linux/kernel/git/gregkh/tty

Here are some tty/serial patches for 3.3-rc1

Big thing here is the movement of the 8250 serial drivers to their own
directory, now that the patch churn has calmed down.

Other than that, only minor stuff (omap patches were reverted as they
were found to be wrong), and another broken driver removed from the
system.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

* tag 'tty-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: Kill off Moorestown code
  Revert "tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA mode"
  Revert "tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip"
  serial: Fix wakeup init logic to speed up startup
  docbook: don't use serial_core.h in device-drivers book
  serial: amba-pl011: lock console writes against interrupts
  amba-pl011: do not disable RTS during shutdown
  tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip
  tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA mode
  omap-serial: make serial_omap_restore_context depend on CONFIG_PM_RUNTIME
  omap-serial :Make the suspend/resume functions depend on CONFIG_PM_SLEEP.
  TTY: fix UV serial console regression
  jsm: Fixed EEH recovery error
  Updated TTY MAINTAINERS info
  serial: group all the 8250 related code together

8 years agoMerge tag 'usb-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Mon, 30 Jan 2012 19:38:28 +0000]
Merge tag 'usb-3.3-rc1' of git://git./linux/kernel/git/gregkh/usb

Here are a bunch of USB patches for 3.3-rc1.

Nothing major, largest thing here is the removal of some drivers that
did not work at all.  Other than that, the normal collection of bugfixes
and new device ids.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

* tag 'usb-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (52 commits)
  uwb & wusb: fix kconfig error
  USB: Realtek cr: fix autopm scheduling while atomic
  USB: ftdi_sio: Add more identifiers
  xHCI: Cleanup isoc transfer ring when TD length mismatch found
  usb: musb: omap2430: minor cleanups.
  qcaux: add more Pantech UML190 and UML290 ports
  Revert "drivers: usb: Fix dependency for USB_HWA_HCD"
  usb: mv-otg - Fix build if CONFIG_USB is not set
  USB: cdc-wdm: Avoid hanging on interface with no USB_CDC_DMM_TYPE
  usb: add support for STA2X11 host driver
  drivers: usb: Fix dependency for USB_HWA_HCD
  kernel-doc: fix new warning in usb.h
  USB: OHCI: fix new compiler warnings
  usb: serial: kobil_sct: fix compile warning:
  drivers/usb/host/ehci-fsl.c: add missing iounmap
  USB: cdc-wdm: better allocate a buffer that is at least as big as we tell the USB core
  USB: cdc-wdm: call wake_up_all to allow driver to shutdown on device removal
  USB: cdc-wdm: use two mutexes to allow simultaneous read and write
  USB: cdc-wdm: updating desc->length must be protected by spin_lock
  USB: usbsevseg: fix max length
  ...

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 30 Jan 2012 18:53:20 +0000]
Merge git://git./linux/kernel/git/davem/net

1) Setting link attributes can modify the size of the attributes that
   would be reported on a subsequent getlink netlink operation,
   therefore min_ifinfo_dump_size needs to be adjusted.  From Stefan
   Gula.

2) Resegmentation of TSO frames while trimming can violate invariants
   expected by callers, namely that the number of segments can only stay
   the same or decrease, never increase.  If MSS changes, however, we
   can trim data but then end up with more segments.  Fix this by only
   segmenting to the MSS already recorded in the SKB.  That's the
   simplest fix for now and if we want to get more fancy in the future
   that's a more involved change.

   This probably explains some retransmit counter inaccuracies.

   From Neal Cardwell.

3) Fix too-many-wakeups in POLL with AF_UNIX sockets, from Eric Dumazet.

4) Fix CAIF crashes wrt.  namespace handling.  From Eric Dumazet and
   Eric W. Biederman.

5) TCP port selection fixes from Flavio Leitner.

6) More socket memory cgroup build fixes in certain randonfig
   situations.  From Glauber Costa.

7) Fix TCP memory sysctl regression reported by Ingo Molnar, also from
   Glauber Costa.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  af_unix: fix EPOLLET regression for stream sockets
  tcp: fix tcp_trim_head() to adjust segment count with skb MSS
  net/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL
  net caif: Register properly as a pernet subsystem.
  netns: Fail conspicously if someone uses net_generic at an inappropriate time.
  net: explicitly add jump_label.h header to sock.h
  net: RTNETLINK adjusting values of min_ifinfo_dump_size
  ipv6: Fix ip_gre lockless xmits.
  xen-netfront: correct MAX_TX_TARGET calculation.
  netns: fix net_alloc_generic()
  tcp: bind() optimize port allocation
  tcp: bind() fix autoselection to share ports
  l2tp: l2tp_ip - fix possible oops on packet receive
  iwlwifi: fix PCI-E transport "inta" race
  mac80211: set bss_conf.idle when vif is connected
  mac80211: update oper_channel on ibss join

8 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Linus Torvalds [Mon, 30 Jan 2012 18:16:25 +0000]
Merge tag 'for-linus' of git://git./linux/kernel/git/broonie/regulator

This fixes an integration issue with the regulator device tree bindings
which shook out in -rc.  The bindings were overly enthusiatic when
deciding to set a voltage on a regulator and would try to set zero volts
on an unconfigured regulator which isn't supported.

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: Set apply_uV only when min and max voltages are defined

8 years agoaf_unix: fix EPOLLET regression for stream sockets
Eric Dumazet [Sat, 28 Jan 2012 16:11:03 +0000]
af_unix: fix EPOLLET regression for stream sockets

Commit 0884d7aa24 (AF_UNIX: Fix poll blocking problem when reading from
a stream socket) added a regression for epoll() in Edge Triggered mode
(EPOLLET)

Appropriate fix is to use skb_peek()/skb_unlink() instead of
skb_dequeue(), and only call skb_unlink() when skb is fully consumed.

This remove the need to requeue a partial skb into sk_receive_queue head
and the extra sk->sk_data_ready() calls that added the regression.

This is safe because once skb is given to sk_receive_queue, it is not
modified by a writer, and readers are serialized by u->readlock mutex.

This also reduce number of spinlock acquisition for small reads or
MSG_PEEK users so should improve overall performance.

Reported-by: Nick Mathewson <nickm@freehaven.net>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Alexey Moiseytsev <himeraster@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agotcp: fix tcp_trim_head() to adjust segment count with skb MSS
Neal Cardwell [Sat, 28 Jan 2012 17:29:46 +0000]
tcp: fix tcp_trim_head() to adjust segment count with skb MSS

This commit fixes tcp_trim_head() to recalculate the number of
segments in the skb with the skb's existing MSS, so trimming the head
causes the skb segment count to be monotonically non-increasing - it
should stay the same or go down, but not increase.

Previously tcp_trim_head() used the current MSS of the connection. But
if there was a decrease in MSS between original transmission and ACK
(e.g. due to PMTUD), this could cause tcp_trim_head() to
counter-intuitively increase the segment count when trimming bytes off
the head of an skb. This violated assumptions in tcp_tso_acked() that
tcp_trim_head() only decreases the packet count, so that packets_acked
in tcp_tso_acked() could underflow, leading tcp_clean_rtx_queue() to
pass u32 pkts_acked values as large as 0xffffffff to
ca_ops->pkts_acked().

As an aside, if tcp_trim_head() had really wanted the skb to reflect
the current MSS, it should have called tcp_set_skb_tso_segs()
unconditionally, since a decrease in MSS would mean that a
single-packet skb should now be sliced into multiple segments.

Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Nandita Dukkipati <nanditad@google.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL
Glauber Costa [Mon, 30 Jan 2012 01:20:17 +0000]
net/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL

sysctl_tcp_mem() initialization was moved to sysctl_tcp_ipv4.c
in commit 3dc43e3e4d0b52197d3205214fe8f162f9e0c334, since it
became a per-ns value.

That code, however, will never run when CONFIG_SYSCTL is
disabled, leading to bogus values on those fields - causing hung
TCP sockets.

This patch fixes it by keeping an initialization code in
tcp_init(). It will be overwritten by the first net namespace
init if CONFIG_SYSCTL is compiled in, and do the right thing if
it is compiled out.

It is also named properly as tcp_init_mem(), to properly signal
its non-sysctl side effect on TCP limits.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Glauber Costa <glommer@parallels.com>
Cc: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/4F22D05A.8030604@parallels.com
[ renamed the function, tidied up the changelog a bit ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Mon, 30 Jan 2012 17:02:10 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  [S390] dasd: revalidate server for new pathgroup
  [S390] dasd: revert LCU optimization
  [S390] cleanup entry point definition

8 years agoMerge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
Linus Torvalds [Mon, 30 Jan 2012 16:59:46 +0000]
Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze

* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: generic atomic64 support

8 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Mon, 30 Jan 2012 16:56:41 +0000]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  vmwgfx: Fix assignment in vmw_framebuffer_create_handle
  drm/radeon/kms: Fix device tree linkage of i2c buses
  drm: Pass the real error code back during GEM bo initialisation
  Revert "drm/i810: cleanup reclaim_buffers"

8 years agoMerge tag 'nfs-for-3.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Mon, 30 Jan 2012 16:47:49 +0000]
Merge tag 'nfs-for-3.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

NFS client bugfixes for Linux 3.3 (pull 3)

* tag 'nfs-for-3.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: Fix machine creds in generic_create_cred and generic_match

8 years agoMerge tag 'pm-fix-for-3.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafae...
Linus Torvalds [Mon, 30 Jan 2012 16:33:40 +0000]
Merge tag 'pm-fix-for-3.3-rc2' of git://git./linux/kernel/git/rafael/linux-pm

Power management fix for 3.3-rc2

Fix for a hibernate (s2disk) regression introduced during the 3.2
merge window that causes s2disk to trigger BUG_ON() in
freeze_workqueues_begin() if there is not enough swap space to save
the image.

* tag 'pm-fix-for-3.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / Hibernate: Fix s2disk regression related to freezing workqueues

8 years agovmwgfx: Fix assignment in vmw_framebuffer_create_handle
Ryan Mallon [Fri, 27 Jan 2012 21:51:40 +0000]
vmwgfx: Fix assignment in vmw_framebuffer_create_handle

The assignment of handle in vmw_framebuffer_create_handle doesn't actually do anything useful and is incorrectly assigning an integer value to a pointer argument. It appears that this is a typo and should be dereferencing handle rather than assigning to it directly. This fixes a bug where an undefined handle value is potentially returned to user-space.

Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Reviewed-by: Jakob Bornecrantz<jakob@vmware.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agodrm/radeon/kms: Fix device tree linkage of i2c buses
Jean Delvare [Sat, 28 Jan 2012 10:10:38 +0000]
drm/radeon/kms: Fix device tree linkage of i2c buses

Properly set the parent device of i2c buses before registering them so
that they will show at the right place in the device tree (rather than
in /sys/devices directly.)

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Dave Airlie <airlied@gmail.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agodrm: Pass the real error code back during GEM bo initialisation
Chris Wilson [Sun, 29 Jan 2012 16:45:32 +0000]
drm: Pass the real error code back during GEM bo initialisation

In particular, I found I was hitting the max-file limit in the VFS,
and the EFILE was being magically transformed into ENOMEM. Confusion
reigns.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agoRevert "drm/i810: cleanup reclaim_buffers"
Daniel Vetter [Sun, 29 Jan 2012 16:05:52 +0000]
Revert "drm/i810: cleanup reclaim_buffers"

This reverts commit 87499ffdcb1c70f66988cd8febc4ead0ba2f9118.

Where is that paper bag ... ah here.

I've failed to take an odd interaction between my other cleanups and
this reclaim_buffers patch into account and also failed to properly
test it. Looks like there are more dragons and hidden trapdoors in the
drm release path than actual lines of code.

Until I get a clue, let's just revert this.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agohwmon: (w83627ehf) Disable setting DC mode for pwm2, pwm3 on NCT6776F
Guenter Roeck [Sat, 28 Jan 2012 01:56:06 +0000]
hwmon: (w83627ehf) Disable setting DC mode for pwm2, pwm3 on NCT6776F

NCT6776F only supports pwm mode for pwm2 and pwm3. Return error if an attempt
is made to set those pwm channels to DC mode.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@vger.kernel.org # 3.0+
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>

8 years agoPM / Hibernate: Fix s2disk regression related to freezing workqueues
Rafael J. Wysocki [Sun, 29 Jan 2012 19:35:52 +0000]
PM / Hibernate: Fix s2disk regression related to freezing workqueues

Commit 2aede851ddf08666f68ffc17be446420e9d2a056

  PM / Hibernate: Freeze kernel threads after preallocating memory

introduced a mechanism by which kernel threads were frozen after
the preallocation of hibernate image memory to avoid problems with
frozen kernel threads not responding to memory freeing requests.
However, it overlooked the s2disk code path in which the
SNAPSHOT_CREATE_IMAGE ioctl was run directly after SNAPSHOT_FREE,
which caused freeze_workqueues_begin() to BUG(), because it saw
that worqueues had been already frozen.

Although in principle this issue might be addressed by removing
the relevant BUG_ON() from freeze_workqueues_begin(), that would
reintroduce the very problem that commit 2aede851ddf08666f68ffc17be4
attempted to avoid into that particular code path.  For this reason,
to fix the issue at hand, introduce thaw_kernel_threads() and make
the SNAPSHOT_FREE ioctl execute it.

Special thanks to Srivatsa S. Bhat for detailed analysis of the
problem.

Reported-and-tested-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: stable@kernel.org

8 years agohwmon: (sht15) fix bad error code
Vivien Didelot [Thu, 26 Jan 2012 20:59:00 +0000]
hwmon: (sht15) fix bad error code

When no platform data was supplied, returned error code was 0.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Cc: stable@vger.kernel.org # 2.6.32+
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>

8 years agoMerge tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 29 Jan 2012 02:20:48 +0000]
Merge tag 'driver-core-3.3-rc1-bugfixes' of git://git./linux/kernel/git/gregkh/driver-core

Here are some patches for the 3.3-rc1 tree.

It contains the removal of the sysdev code, now that all users of it are
gone, as well as some sysfs bugfixes that have been reported by users.
There are also some documentation updates here as well.

* tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  sysfs: Complain bitterly about attempts to remove files from nonexistent directories.
  stable: update documentation to ask for kernel version
  base/core.c:fix typo in comment in function device_add
  Documentation: devres: add allocation functions to list of supported calls
  Documentation update for the driver model core
  kernel-doc: fix new warnings in driver-core
  kernel-doc: fix new warnings in debugfs
  kernel-doc: fix new warnings in device.h
  driver core: remove drivers/base/sys.c and include/linux/sysdev.h

8 years agoMerge tag 'for-linus' of git://github.com/rustyrussell/linux
Linus Torvalds [Sun, 29 Jan 2012 02:16:09 +0000]
Merge tag 'for-linus' of git://github.com/rustyrussell/linux

* tag 'for-linus' of git://github.com/rustyrussell/linux:
  lguest: remove reference from Documentation/virtual/00-INDEX
  virtio: correct the memory barrier in virtqueue_kick_prepare()
  virtio: fix typos of memory barriers

8 years agoMerge branch 'stable/for-linus-fixes-3.3' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Sun, 29 Jan 2012 02:15:33 +0000]
Merge branch 'stable/for-linus-fixes-3.3' of git://git./linux/kernel/git/konrad/xen

* 'stable/for-linus-fixes-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/granttable: Disable grant v2 for HVM domains.
  x86: xen: size struct xen_spinlock to always fit in arch_spinlock_t

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Sun, 29 Jan 2012 01:00:19 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix reservations in btrfs_page_mkwrite
  Btrfs: advance window_start if we're using a bitmap
  btrfs: mask out gfp flags in releasepage
  Btrfs: fix enospc error caused by wrong checks of the chunk
  Btrfs: do not defrag a file partially
  Btrfs: fix warning for 32-bit build of fs/btrfs/check-integrity.c
  Btrfs: use cluster->window_start when allocating from a cluster bitmap
  Btrfs: Check for NULL page in extent_range_uptodate
  btrfs: Fix busyloops in transaction waiting code
  Btrfs: make sure a bitmap has enough bytes
  Btrfs: fix uninit warning in backref.c

8 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Sun, 29 Jan 2012 00:57:15 +0000]
Merge git://www.linux-watchdog.org/linux-watchdog

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: iTCO_wdt: add Intel Lynx Point DeviceIDs
  watchdog: via_wdt: Set min_timeout and max_timeout for wdt_dev
  watchdog: Fix typo "unexpectdly"
  watchdog: wafer5823wdt: Fix handling WDIOS_DISABLECARD/WDIOS_ENABLECARD options
  watchdog: wm8350_wdt: Fix handling WDIOS_DISABLECARD/WDIOS_ENABLECARD options
  watchdog: Return proper error in nuc900wdt_probe if misc_register fails
  watchdog: Staticise nuc900_wdt
  watchdog: via_wdt: Staticise wdt_pci_table
  watchdog: omap_wdt.c: Fix the mismatch of pm_runtime enable and disable
  watchdog: dw_wdt.c: use devm_request_and_ioremap
  watchdog: imx2_wdt.c: use devm_request_and_ioremap

8 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Sat, 28 Jan 2012 21:27:10 +0000]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm: (31 commits)
  ARM: 7304/1: ioremap: fix boundary check when reusing static mapping
  ARM: 7301/1: Rename the T() macro to TUSER() to avoid namespace conflicts
  ARM: 7299/1: ftrace: clear zero bit in reported IPs for Thumb-2
  ARM: 7298/1: realview: fix mapping of MPCore private memory region
  PCMCIA: fix sa1111 oops on remove
  ARM: 7288/1: mach-sa1100: add missing module_init() call
  ARM: 7297/1: smp_twd: make sure timer is stopped before registering it
  ARM: 7296/1: proc-v7.S: remove HARVARD_CACHE preprocessor guards
  ARM: 7295/1: cortex-a7: move proc_info out of !CONFIG_ARM_LPAE block
  ARM: 7293/1: logical_cpu_map: decouple CPU mapping from SMP
  ARM: 7291/1: cache: assume 64-byte L1 cachelines for ARMv7 CPUs
  ARM: 7290/1: vmlinux.lds.S: align the exception fixup table to a 4-byte boundary
  ARM: 7289/1: vmlinux.lds.S: do not hardcode cacheline size as 32 bytes
  MFD: ucb1x00-ts: fix resume failure
  MFD: ucb1x00-core: fix gpiolib direction_output handling
  MFD: ucb1x00-core: fix missing restore of io output data on resume
  MFD: mcp-core: fix mcp_priv() to be more type safe
  MFD: mcp-core: fix complaints from the genirq layer
  Revert "ARM: sa11x0: Implement autoloading of codec and codec pdata for mcp bus."
  Revert "ARM: sa1100: Refactor mcp-sa11x0 to use platform resources."
  ...

Fix up conflict due to arch/arm/mach-mx5/Kconfig having been merged into
mach-imx5 (commit 784a90c0a7d8: "ARM i.MX: Merge i.MX5 support into
mach-imx"), but the ARM_L1_CACHE_SHIFT_6 entry was moved to be driven by
the CPU_V7 logic from it in the old location in rmk's branch (commit
a092f2b15399: "ARM: 7291/1: cache: assume 64-byte L1 cachelines for
ARMv7 CPUs").

8 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sat, 28 Jan 2012 21:21:54 +0000]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

arm-soc fixes for 3.3-rc:

AT91 needed reset fixes which resulted in some minor code refactoring,
it also adds a feature-removal for one of their platforms for 3.4.
The USB patches have been acked by Greg K-H.

i.MX and ux500 both have some minor fixes, nothing controversial.

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arch/arm/mach-imx/mach-mx53_ard.c: add missing iounmap
  ARM: imx: iomux-v1.h: Fix build error due to __init annotation
  ARM: at91: Fix at91sam9g45 and at91cap9 reset
  ARM: at91: make rstc soc independent
  ARM: at91: introduce AT91_SAM9_ALT_RESET to select the at91sam9 alternative reset
  ARM: at91: merge at91cap9_ddrsdr.h in at91sam9_ddrsdr.h
  ARM: at91: fix cap9 ddrsdr register
  ARM/USB: at91/ohci-at91: rename vbus_pin_inverted to vbus_pin_active_low
  USB: at91: fix clk_get error handling
  ARM: at91: removal of CAP9 SoC family
  ARM: at91: fix at91rm9200 soc subtype handling
  mach-ux500: no MMC_CAP_SD_HIGHSPEED on Snowball
  mach-ux500: enable ARM errata 764369
  mach-ux500: do not override outer.inv_all
  mach-ux500: musb: now musb is always in OTG mode
  ARM: imx6: add missing twd_clk for imx6q clock

8 years agoLogfs: Allow NULL block_isbad() methods
Joern Engel [Fri, 5 Aug 2011 09:09:55 +0000]
Logfs: Allow NULL block_isbad() methods

Not all mtd drivers define block_isbad().  Let's assume no bad blocks
instead of refusing to mount.

Signed-off-by: Joern Engel <joern@logfs.org>

8 years agologfs: Grow inode in delete path
Joern Engel [Fri, 5 Aug 2011 09:13:30 +0000]
logfs: Grow inode in delete path

Can be necessary if an inode gets deleted (through -ENOSPC) before being
written.  Might be better to move this into logfs_write_rec(), but for
now go with the stupid&safe patch.

Signed-off-by: Joern Engel <joern@logfs.org>

8 years agologfs: Free areas before calling generic_shutdown_super()
Joern Engel [Fri, 5 Aug 2011 09:18:19 +0000]
logfs: Free areas before calling generic_shutdown_super()

Or hit an assertion in map_invalidatepage() instead.

Signed-off-by: Joern Engel <joern@logfs.org>

8 years agologfs: remove useless BUG_ON
Joern Engel [Mon, 12 Sep 2011 15:39:16 +0000]
logfs: remove useless BUG_ON

It prevents write sizes >4k.

Signed-off-by: Joern Engel <joern@logfs.org>

8 years agoMAINTAINERS: Add Prasad Joshi in LogFS maintiners
Prasad Joshi [Tue, 13 Sep 2011 17:34:11 +0000]
MAINTAINERS: Add Prasad Joshi in LogFS maintiners

Acked-by: Joern Engel <joern@logfs.org>
Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com>

8 years agologfs: Propagate page parameter to __logfs_write_inode
Prasad Joshi [Sun, 2 Oct 2011 18:16:51 +0000]
logfs: Propagate page parameter to __logfs_write_inode

During GC LogFS has to rewrite each valid block to a separate segment.
Rewrite operation reads data from an old segment and writes it to a
newly allocated segment. Since every write operation changes data
block pointers maintained in inode, inode should also be rewritten.

In GC path to avoid AB-BA deadlock LogFS marks a page with
PG_pre_locked in addition to locking the page (PG_locked). The page
lock is ignored iff the page is pre-locked.

LogFS uses a special file called segment file. The segment file
maintains an 8 bytes entry for every segment. It keeps track of erase
count, level etc. for every segment.

Bad things happen with a segment belonging to the segment file is GCed

 ------------[ cut here ]------------
kernel BUG at /home/prasad/logfs/readwrite.c:297!
invalid opcode: 0000 [#1] SMP
Modules linked in: logfs joydev usbhid hid psmouse e1000 i2c_piix4
serio_raw [last unloaded: logfs]
Pid: 20161, comm: mount Not tainted 3.1.0-rc3+ #3 innotek GmbH
VirtualBox
EIP: 0060:[<f809132a>] EFLAGS: 00010292 CPU: 0
EIP is at logfs_lock_write_page+0x6a/0x70 [logfs]
EAX: 00000027 EBX: f73f5b20 ECX: c16007c8 EDX: 00000094
ESI: 00000000 EDI: e59be6e4 EBP: c7337b28 ESP: c7337b18
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process mount (pid: 20161, ti=c7336000 task=eb323f70 task.ti=c7336000)
Stack:
f8099a3d c7337b24 f73f5b20 00001002 c7337b50 f8091f6d f8099a4d f80994e4
00000003 00000000 c7337b68 00000000 c67e4400 00001000 c7337b80 f80935e5
00000000 00000000 00000000 00000000 e1fcf000 0000000f e59be618 c70bf900
Call Trace:
[<f8091f6d>] logfs_get_write_page.clone.16+0xdd/0x100 [logfs]
[<f80935e5>] logfs_mod_segment_entry+0x55/0x110 [logfs]
[<f809460d>] logfs_get_segment_entry+0x1d/0x20 [logfs]
[<f8091060>] ? logfs_cleanup_journal+0x50/0x50 [logfs]
[<f809521b>] ostore_get_erase_count+0x1b/0x40 [logfs]
[<f80965b8>] logfs_open_area+0xc8/0x150 [logfs]
[<c141a7ec>] ? kmemleak_alloc+0x2c/0x60
[<f809668e>] __logfs_segment_write.clone.16+0x4e/0x1b0 [logfs]
[<c10dd563>] ? mempool_kmalloc+0x13/0x20
[<c10dd563>] ? mempool_kmalloc+0x13/0x20
[<f809696f>] logfs_segment_write+0x17f/0x1d0 [logfs]
[<f8092e8c>] logfs_write_i0+0x11c/0x180 [logfs]
[<f8092f35>] logfs_write_direct+0x45/0x90 [logfs]
[<f80934cd>] __logfs_write_buf+0xbd/0xf0 [logfs]
[<c102900e>] ? kmap_atomic_prot+0x4e/0xe0
[<f809424b>] logfs_write_buf+0x3b/0x60 [logfs]
[<f80947a9>] __logfs_write_inode+0xa9/0x110 [logfs]
[<f8094cb0>] logfs_rewrite_block+0xc0/0x110 [logfs]
[<f8095300>] ? get_mapping_page+0x10/0x60 [logfs]
[<f8095aa0>] ? logfs_load_object_aliases+0x2e0/0x2f0 [logfs]
[<f808e57d>] logfs_gc_segment+0x2ad/0x310 [logfs]
[<f808e62a>] __logfs_gc_once+0x4a/0x80 [logfs]
[<f808ed43>] logfs_gc_pass+0x683/0x6a0 [logfs]
[<f8097a89>] logfs_mount+0x5a9/0x680 [logfs]
[<c1126b21>] mount_fs+0x21/0xd0
[<c10f6f6f>] ? __alloc_percpu+0xf/0x20
[<c113da41>] ? alloc_vfsmnt+0xb1/0x130
[<c113db4b>] vfs_kern_mount+0x4b/0xa0
[<c113e06e>] do_kern_mount+0x3e/0xe0
[<c113f60d>] do_mount+0x34d/0x670
[<c10f2749>] ? strndup_user+0x49/0x70
[<c113fcab>] sys_mount+0x6b/0xa0
[<c142d87c>] syscall_call+0x7/0xb
Code: f8 e8 8b 93 39 c9 8b 45 f8 3e 0f ba 28 00 19 d2 85 d2 74 ca eb d0 0f 0b 8d 45 fc 89 44 24 04 c7 04 24 3d 9a 09 f8 e8 09 92 39 c9 <0f> 0b 8d 74 26 00 55 89 e5 3e 8d 74 26 00 8b 10 80 e6 01 74 09
EIP: [<f809132a>] logfs_lock_write_page+0x6a/0x70 [logfs] SS:ESP 0068:c7337b18
---[ end trace 96e67d5b3aa3d6ca ]---

The patch passes locked page to __logfs_write_inode. It calls function
logfs_get_wblocks() to pre-lock the page. This ensures any further
attempts to lock the page are ignored (esp from get_erase_count).

Acked-by: Joern Engel <joern@logfs.org>
Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com>

8 years agologfs: set superblock shutdown flag after generic sb shutdown
Prasad Joshi [Sun, 30 Oct 2011 16:45:32 +0000]
logfs: set superblock shutdown flag after generic sb shutdown

While unmounting the file system LogFS calls generic_shutdown_super.
The function does file system independent superblock shutdown.
However, it might result in call file system specific inode eviction.

LogFS marks FS shutting down by setting bit LOGFS_SB_FLAG_SHUTDOWN in
super->s_flags. Since, inode eviction might call truncate on inode,
following BUG is observed when file system is unmounted:

------------[ cut here ]------------
kernel BUG at /home/prasad/logfs/segment.c:362!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU 3
Modules linked in: logfs binfmt_misc ppdev virtio_blk parport_pc lp
parport psmouse floppy virtio_pci serio_raw virtio_ring virtio

Pid: 1933, comm: umount Not tainted 3.0.0+ #4 Bochs Bochs
RIP: 0010:[<ffffffffa008c841>]  [<ffffffffa008c841>]
logfs_segment_write+0x211/0x230 [logfs]
RSP: 0018:ffff880062d7b9e8  EFLAGS: 00010202
RAX: 000000000000000e RBX: ffff88006eca9000 RCX: 0000000000000000
RDX: ffff88006fd87c40 RSI: ffffea00014ff468 RDI: ffff88007b68e000
RBP: ffff880062d7ba48 R08: 8000000020451430 R09: 0000000000000000
R10: dead000000100100 R11: 0000000000000000 R12: ffff88006fd87c40
R13: ffffea00014ff468 R14: ffff88005ad0a460 R15: 0000000000000000
FS:  00007f25d50ea760(0000) GS:ffff88007fd80000(0000)
knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000d05e48 CR3: 0000000062c72000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process umount (pid: 1933, threadinfo ffff880062d7a000,
task ffff880070b44500)
Stack:
ffff880062d7ba38 ffff88005ad0a508 0000000000001000 0000000000000000
8000000020451430 ffffea00014ff468 ffff880062d7ba48 ffff88005ad0a460
ffff880062d7bad8 ffffea00014ff468 ffff88006fd87c40 0000000000000000
Call Trace:
[<ffffffffa0088fee>] logfs_write_i0+0x12e/0x190 [logfs]
[<ffffffffa0089360>] __logfs_write_rec+0x140/0x220 [logfs]
[<ffffffffa0089312>] __logfs_write_rec+0xf2/0x220 [logfs]
[<ffffffffa00894a4>] logfs_write_rec+0x64/0xd0 [logfs]
[<ffffffffa0089616>] __logfs_write_buf+0x106/0x110 [logfs]
[<ffffffffa008a19e>] logfs_write_buf+0x4e/0x80 [logfs]
[<ffffffffa008a6b8>] __logfs_write_inode+0x98/0x110 [logfs]
[<ffffffffa008a7c4>] logfs_truncate+0x54/0x290 [logfs]
[<ffffffffa008abfc>] logfs_evict_inode+0xdc/0x190 [logfs]
[<ffffffff8115eef5>] evict+0x85/0x170
[<ffffffff8115f126>] iput+0xe6/0x1b0
[<ffffffff8115b4a8>] shrink_dcache_for_umount_subtree+0x218/0x280
[<ffffffff8115ce91>] shrink_dcache_for_umount+0x51/0x90
[<ffffffff8114796c>] generic_shutdown_super+0x2c/0x100
[<ffffffffa008cc47>] logfs_kill_sb+0x57/0xf0 [logfs]
[<ffffffff81147de5>] deactivate_locked_super+0x45/0x70
[<ffffffff811487ea>] deactivate_super+0x4a/0x70
[<ffffffff81163934>] mntput_no_expire+0xa4/0xf0
[<ffffffff8116469f>] sys_umount+0x6f/0x380
[<ffffffff814dd46b>] system_call_fastpath+0x16/0x1b
Code: 55 c8 49 8d b6 a8 00 00 00 45 89 f9 45 89 e8 4c 89 e1 4c 89 55
b8 c7 04 24 00 00 00 00 e8 68 fc ff ff 4c 8b 55 b8 e9 3c ff ff ff <0f>
0b 0f 0b c7 45 c0 00 00 00 00 e9 44 fe ff ff 66 66 66 66 66
RIP  [<ffffffffa008c841>] logfs_segment_write+0x211/0x230 [logfs]
RSP <ffff880062d7b9e8>
---[ end trace fe6b040cea952290 ]---

Therefore, move super->s_flags setting after the fs-indenpendent work
has been finished.

Reviewed-by: Joern Engel <joern@logfs.org>
Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com>

8 years agologfs: take write mutex lock during fsync and sync
Prasad Joshi [Sat, 28 Jan 2012 06:06:06 +0000]
logfs: take write mutex lock during fsync and sync

LogFS uses super->s_write_mutex while writing data to disk. Taking the
same mutex lock in sync and fsync code path solves the following BUG:

------------[ cut here ]------------
kernel BUG at /home/prasad/logfs/dev_bdev.c:134!

Pid: 2387, comm: flush-253:16 Not tainted 3.0.0+ #4 Bochs Bochs
RIP: 0010:[<ffffffffa007deed>]  [<ffffffffa007deed>]
                bdev_writeseg+0x25d/0x270 [logfs]
Call Trace:
[<ffffffffa007c381>] logfs_open_area+0x91/0x150 [logfs]
[<ffffffff8128dcb2>] ? find_level.clone.9+0x62/0x100
[<ffffffffa007c49c>] __logfs_segment_write.clone.20+0x5c/0x190 [logfs]
[<ffffffff810ef005>] ? mempool_kmalloc+0x15/0x20
[<ffffffff810ef383>] ? mempool_alloc+0x53/0x130
[<ffffffffa007c7a4>] logfs_segment_write+0x1d4/0x230 [logfs]
[<ffffffffa0078f8e>] logfs_write_i0+0x12e/0x190 [logfs]
[<ffffffffa0079300>] __logfs_write_rec+0x140/0x220 [logfs]
[<ffffffffa0079444>] logfs_write_rec+0x64/0xd0 [logfs]
[<ffffffffa00795b6>] __logfs_write_buf+0x106/0x110 [logfs]
[<ffffffffa007a13e>] logfs_write_buf+0x4e/0x80 [logfs]
[<ffffffffa0073e33>] __logfs_writepage+0x23/0x80 [logfs]
[<ffffffffa007410c>] logfs_writepage+0xdc/0x110 [logfs]
[<ffffffff810f5ba7>] __writepage+0x17/0x40
[<ffffffff810f6208>] write_cache_pages+0x208/0x4f0
[<ffffffff810f5b90>] ? set_page_dirty+0x70/0x70
[<ffffffff810f653a>] generic_writepages+0x4a/0x70
[<ffffffff810f75d1>] do_writepages+0x21/0x40
[<ffffffff8116b9d1>] writeback_single_inode+0x101/0x250
[<ffffffff8116bdbd>] writeback_sb_inodes+0xed/0x1c0
[<ffffffff8116c5fb>] writeback_inodes_wb+0x7b/0x1e0
[<ffffffff8116cc23>] wb_writeback+0x4c3/0x530
[<ffffffff814d984d>] ? sub_preempt_count+0x9d/0xd0
[<ffffffff8116cd6b>] wb_do_writeback+0xdb/0x290
[<ffffffff814d984d>] ? sub_preempt_count+0x9d/0xd0
[<ffffffff814d6208>] ? _raw_spin_unlock_irqrestore+0x18/0x40
[<ffffffff8105aa5a>] ? del_timer+0x8a/0x120
[<ffffffff8116cfac>] bdi_writeback_thread+0x8c/0x2e0
[<ffffffff8116cf20>] ? wb_do_writeback+0x290/0x290
[<ffffffff8106d2e6>] kthread+0x96/0xa0
[<ffffffff814de514>] kernel_thread_helper+0x4/0x10
[<ffffffff8106d250>] ? kthread_worker_fn+0x190/0x190
[<ffffffff814de510>] ? gs_change+0xb/0xb
RIP  [<ffffffffa007deed>] bdev_writeseg+0x25d/0x270 [logfs]
---[ end trace 0211ad60a57657c4 ]---

Reviewed-by: Joern Engel <joern@logfs.org>
Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com>

8 years agologfs: Prevent memory corruption
Joern Engel [Sun, 20 Nov 2011 16:59:01 +0000]
logfs: Prevent memory corruption

This is a bad one.  I wonder whether we were so far protected by
no_free_segments(sb) usually being smaller than LOGFS_NO_AREAS.

Found by Dan Carpenter <dan.carpenter@oracle.com> using smatch.

Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com>

8 years agologfs: update page reference count for pined pages
Prasad Joshi [Sat, 26 Nov 2011 05:30:47 +0000]
logfs: update page reference count for pined pages

LogFS sets PG_private flag to indicate a pined page. We assumed that
marking a page as private is enough to ensure its existence. But
instead it is necessary to hold a reference count to the page.

The change resolves the following BUG

BUG: Bad page state in process flush-253:16  pfn:6a6d0
page flags: 0x100000000000808(uptodate|private)

Suggested-and-Acked-by: Joern Engel <joern@logfs.org>
Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com>

8 years agonet caif: Register properly as a pernet subsystem.
Eric W. Biederman [Thu, 26 Jan 2012 14:04:53 +0000]
net caif: Register properly as a pernet subsystem.

caif is a subsystem and as such it needs to register with
register_pernet_subsys instead of register_pernet_device.

Among other problems using register_pernet_device was resulting in
net_generic being called before the caif_net structure was allocated.
Which has been causing net_generic to fail with either BUG_ON's or by
return NULL pointers.

A more ugly problem that could be caused is packets in flight why the
subsystem is shutting down.

To remove confusion also remove the cruft cause by inappropriately
trying to fix this bug.

With the aid of the previous patch I have tested this patch and
confirmed that using register_pernet_subsys makes the failure go away as
it should.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Tested-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonetns: Fail conspicously if someone uses net_generic at an inappropriate time.
Eric W. Biederman [Thu, 26 Jan 2012 14:02:55 +0000]
netns: Fail conspicously if someone uses net_generic at an inappropriate time.

By definition net_generic should never be called when it can return
NULL.  Fail conspicously with a BUG_ON to make it clear when people mess
up that a NULL return should never happen.

Recently there was a bug in the CAIF subsystem where it was registered
with register_pernet_device instead of register_pernet_subsys.  It was
erroneously concluded that net_generic could validly return NULL and
that net_assign_generic was buggy (when it was just inefficient).
Hopefully this BUG_ON will prevent people to coming to similar erroneous
conclusions in the futrue.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Tested-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
David S. Miller [Sat, 28 Jan 2012 01:40:18 +0000]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless

8 years agolguest: remove reference from Documentation/virtual/00-INDEX
Rusty Russell [Fri, 27 Jan 2012 21:40:23 +0000]
lguest: remove reference from Documentation/virtual/00-INDEX

We're in tools/lguest now.

Reported-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

8 years agovirtio: correct the memory barrier in virtqueue_kick_prepare()
Jason Wang [Fri, 20 Jan 2012 08:17:08 +0000]
virtio: correct the memory barrier in virtqueue_kick_prepare()

Use virtio_mb() to make sure the available index to be exposed before
checking the the avail event. Otherwise we may get stale value of
avail event in guest and never kick the host after.

Note: this fixes a bug introduced by ee7cd8981e15bcb365fc762afe3fc47b8242f630.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org

8 years agovirtio: fix typos of memory barriers
Jason Wang [Fri, 20 Jan 2012 08:16:59 +0000]
virtio: fix typos of memory barriers

Note: this fixes a bug introduced recently in
7b21e34fd1c272e3a8c3846168f2f6287a4cd72b.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

8 years agoARM: 7304/1: ioremap: fix boundary check when reusing static mapping
Pawel Moll [Thu, 26 Jan 2012 10:47:11 +0000]
ARM: 7304/1: ioremap: fix boundary check when reusing static mapping

Since commit 576d2f2525612ecb5af029a76f21f22a3b82563d "ARM: add
generic ioremap optimization by reusing static mappings" ioremap()
is trying to reuse existing static mapping when possible.

The condition checking boundaries of the requested and existing
mappings didn't take in-page offset into consideration though,
which lead to obscure and hard to debug problems when requested
mapping crossed end of the static one.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

8 years agoxen/granttable: Disable grant v2 for HVM domains.
Konrad Rzeszutek Wilk [Wed, 25 Jan 2012 05:13:20 +0000]
xen/granttable: Disable grant v2 for HVM domains.

As proper scaffolding for supporting error status is not yet
implemented.

BUG: unable to handle kernel NULL pointer dereference at 0000000000000400
IP: [<ffffffff81375ae9>] gnttab_end_foreign_access_ref_v2+0x29/0x40
PGD 32aa3067 PUD 32a87067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
CPU 0
Modules linked in: sg sr_mod cdrom ata_generic ata_piix libata scsi_mod xen_blkfront xen_netfront fb_sys_fops sysimgblt sysfillrect syscopyarea xen_kbdfront
cmd

Pid: 2307, comm: ip Not tainted 3.3.0-rc1 #1 Xen HVM domU
RIP: 0010:[<ffffffff81375ae9>]  [<ffffffff81375ae9>] gnttab_end_foreign_access_ref_v2+0x29/0x40
RSP: 0018:ffff88003be03d38  EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff880033210640 RCX: 0000000000000040
RDX: 0000000000002000 RSI: 0000000000000000 RDI: 0000000000000200
RBP: ffff88003be03d38 R08: 0000000000000101 R09: 0000000000000000
R10: dead000000100100 R11: 0000000000000000 R12: ffff88003be03e48
R13: 0000000000000001 R14: ffff880039461c00 R15: 0000000000000200
FS:  00007fb1f84ec700(0000) GS:ffff88003be00000(0000) knlGS:0000000000000000
...

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

8 years agoMerge commit 'v3.3-rc1' into stable/for-linus-fixes-3.3
Konrad Rzeszutek Wilk [Fri, 27 Jan 2012 16:14:02 +0000]
Merge commit 'v3.3-rc1' into stable/for-linus-fixes-3.3

* commit 'v3.3-rc1': (9775 commits)
  Linux 3.3-rc1
  x86, syscall: Need __ARCH_WANT_SYS_IPC for 32 bits
  qnx4: don't leak ->BitMap on late failure exits
  qnx4: reduce the insane nesting in qnx4_checkroot()
  qnx4: di_fname is an array, for crying out loud...
  KEYS: Permit key_serial() to be called with a const key pointer
  keys: fix user_defined key sparse messages
  ima: fix cred sparse warning
  uml: fix compile for x86-64
  MPILIB: Add a missing ENOMEM check
  tpm: fix (ACPI S3) suspend regression
  nvme: fix merge error due to change of 'make_request_fn' fn type
  xen: using EXPORT_SYMBOL requires including export.h
  gpio: tps65910: Use correct offset for gpio initialization
  acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec
  intel_idle: Split up and provide per CPU initialization func
  ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2
  tg3: Fix single-vector MSI-X code
  openvswitch: Fix multipart datapath dumps.
  ipv6: fix per device IP snmp counters
  ...

8 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 27 Jan 2012 15:56:25 +0000]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (31 commits)
  gma500: Fix suspend/resume functions
  drm/exynos: fixed pm feature for fimd module.
  MAINTAINERS: added maintainer entry for Exynos DRM Driver.
  drm/exynos: fixed build dependency for DRM_EXYNOS_FIMD
  drm/exynos: fix build dependency for DRM_EXYNOS_HDMI
  drm/exynos: use release_mem_region instead of release_resource
  agp: fix scratch page cleanup
  drm/i915: fixup forcewake spinlock fallout in drpc debugfs function
  drm/i915: debugfs: show semaphore registers also on gen7
  drm/i915: allow userspace forcewake references also on gen7
  drm/i915: Re-enable gen7 RC6 and GPU turbo after resume.
  drm/i915: Correct debugfs printout for RC1e.
  Revert "drm/i915: Work around gen7 BLT ring synchronization issues."
  drm/i915: rip out the HWSTAM missed irq workaround
  drm/i915: paper over missed irq issues with force wake voodoo
  drm/i915: Hold gt_lock across forcewake register reads
  drm/i915: Hold gt_lock during reset
  drm/i915: Move reset forcewake processing to gen6_do_reset
  drm/i915: protect force_wake_(get|put) with the gt_lock
  drm/i915: convert force_wake_get to func pointer in the gpu reset code
  ...

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 27 Jan 2012 15:53:06 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix silent output on Haier W18 laptop
  ALSA: hda: set mute led polarity for laptops with buggy BIOS based on SSID
  ALSA: hda - Fix silent output on ASUS A6Rp
  ALSA: Fix memory leak on error in snd_compr_set_params()
  ALSA: ymfpci - Don't create invalid PCM & mixers when AC97 doesn't support

8 years agoBtrfs: fix reservations in btrfs_page_mkwrite
Chris Mason [Wed, 25 Jan 2012 18:47:40 +0000]
Btrfs: fix reservations in btrfs_page_mkwrite

Josef fixed btrfs_page_mkwrite to properly release reserved
extents if there was an error.  But if we fail to get a reservation
and we fail to dirty the inode (for ENOSPC reasons), we'll end up
trying to release a reservation we never had.

This makes sure we only release if we were able to reserve.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

8 years agogma500: Fix suspend/resume functions
Ryan Mallon [Fri, 27 Jan 2012 06:28:24 +0000]
gma500: Fix suspend/resume functions

Both the suspend and resume functions incorrectly set psbfb =
to_psb_fb(NULL) outside of the loop over all of the framebuffers. Fix
this by moving the assignment of psbfb inside the loop and removing the
initialisation of fb.

Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agowatchdog: iTCO_wdt: add Intel Lynx Point DeviceIDs
Seth Heasley [Tue, 24 Jan 2012 00:40:55 +0000]
watchdog: iTCO_wdt: add Intel Lynx Point DeviceIDs

This patch adds the TCO Watchdog DeviceIDs for the Intel Lynx Point PCH.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

8 years agowatchdog: via_wdt: Set min_timeout and max_timeout for wdt_dev
Axel Lin [Sat, 21 Jan 2012 07:08:38 +0000]
watchdog: via_wdt: Set min_timeout and max_timeout for wdt_dev

Let the watchdog core to check the valid value range of min_timeout/max_timeout.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

8 years agowatchdog: Fix typo "unexpectdly"
Masanari Iida [Fri, 20 Jan 2012 14:56:19 +0000]
watchdog: Fix typo "unexpectdly"

Correct typo "unexpectdly" to "unexpectedly" in pnx4008_wdt.c
and stmp3xxx_wdt.c

Signed-off-by: Masanari Iida<standby24x7@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

8 years agowatchdog: wafer5823wdt: Fix handling WDIOS_DISABLECARD/WDIOS_ENABLECARD options
Axel Lin [Wed, 18 Jan 2012 11:26:43 +0000]
watchdog: wafer5823wdt: Fix handling WDIOS_DISABLECARD/WDIOS_ENABLECARD options

While receiving WDIOS_DISABLECARD option for WDIOC_SETOPTIONS command,
call wafwdt_stop() to disable watchdog.
Call wafwdt_start() while receiving WDIOS_ENABLECARD option.

Current code has reverse behavior.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>