Граф коммитов

288093 Коммитов

Автор SHA1 Сообщение Дата
Olof Johansson 62f3834359 Merge branch 'next/cleanup-use-static' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup
* 'next/cleanup-use-static' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: SAMSUNG: use static declaration when it is not used in other files
  ARM: S5PV210: use static declaration when it is not used in other files
  ARM: S5PC100: use static declaration when it is not used in other files
  ARM: S5P64X0: use static declaration when it is not used in other files
  ARM: S3C64XX: use static declaration when it is not used in other files
  ARM: S3C24XX: use static declaration when it is not used in other files
  ARM: EXYNOS: use static declaration when it is not used in other files
2012-03-07 14:45:28 -08:00
Olof Johansson 4d02be5a65 Merge branch 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup
* 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Fix build error after merge
2012-03-07 14:05:29 -08:00
Tony Lindgren 2b43e4e586 ARM: OMAP2+: Fix build error after merge
Commit 9890ce44 (ARM: get rid of asm/irq.h in asm/prom.h)
removed include of asm/irq.h in asm/prom.h. This commit
together with recent omap cleanup to remove io.h causes
build breakage:

arrch/arm/mach-omap2/control.c: In function 'omap3_ctrl_write_boot_mode':
arch/arm/mach-omap2/control.c:238: error:
'OMAP343X_CTRL_BASE' undeclared (first use in this function)
...

Fix this by including hardware.h directly where needed
instead of relying on asm/irq.h in asm/prom.h.

Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-03-07 09:03:03 -08:00
Kukjin Kim 60571f98d2 Merge branch 'topic/cleanup-use-static' into next/cleanup-use-static
Conflicts:
	arch/arm/mach-exynos/dma.c
	arch/arm/mach-s5p64x0/dma.c
	arch/arm/mach-s5pc100/dma.c
	arch/arm/mach-s5pv210/dma.c
2012-03-07 03:34:41 -08:00
Arnd Bergmann 18bb4fb287 Merge tag 'tegra-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into tegra/cleanups
Minor fixes that weren't urgent enough to go into 3.3. The two paz00
patches are in mainline already but got merged after the branch point
for this branch, so they're duplicated. I also ended up merging in
rmk/for-armsoc into this later on to fix a bug introduced by it, so it's
included but it's not the base of this branch.

* tag 'tegra-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra:
  ARM: tegra: Enable CPUIdle on Tegra20
  ARM: tegra: export usb phy symbols
  ARM: tegra: build localtimer support only when needed
  ARM: tegra: select CPU_FREQ_TABLE
  ARM: tegra: select required CPU and L2 errata options
  ARM: tegra: paz00: fix wrong UART port on mini-pcie plug
  ARM: tegra: paz00: fix wrong SD1 power gpio

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-03-04 20:50:07 +00:00
Peter De Schrijver f6a1ba6736 ARM: tegra: Enable CPUIdle on Tegra20
As the LP3 code also works for Tegra20, we can enable cpuidle for Tegra20.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-03-04 11:17:17 -08:00
Arnd Bergmann 4265cbfd8d ARM: tegra: export usb phy symbols
The ehci driver can be a module, so the functions provided
by the tegra platform code used by ehci-tegra need to
be exported.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-03-04 11:17:14 -08:00
Arnd Bergmann 249c5172e8 ARM: tegra: build localtimer support only when needed
It is possible to build a tegra kernel without localtimer
support, so the tegra specific parts should only be built
when that is indeed enabled.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-03-04 11:17:10 -08:00
Arnd Bergmann 013df38857 ARM: tegra: select CPU_FREQ_TABLE
The tegra cpufreq implementation relies on the cpu_freq_table
code, so make sure that this is always there when needed.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-03-04 11:17:06 -08:00
Olof Johansson 0e86ca4985 Merge branch 'depends/rmk/for-armsoc' into for-3.4/cleanup-and-fixes 2012-03-04 11:16:38 -08:00
Arnd Bergmann 1220547bfd Merge branch 'depends/omap/gpio/runtime-pm-cleanup' into next/cleanup
Conflicts:
	arch/arm/mach-omap1/gpio16xx.c
	drivers/gpio/gpio-omap.c

Merge in the runtime-pm-cleanup branch from the gpio tree into
next/cleanup, this resolves a nonobvious merge conflict between
the two branches. Both branches move parts of the gpio-omap
driver into platform code, this takes the superset of both
changes.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-03-02 13:05:00 +00:00
Arnd Bergmann a26d3c4fcd Merge branch 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup
* 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Fix L4_EMU_34XX_BASE error after iomap changes
  ARM: OMAP2+: Limit omap_read/write usage to legacy USB drivers
  ARM: OMAP: Remove plat/io.h by splitting it into mach/io.h and mach/hardware.h
  ARM: OMAP2+: Move most of plat/io.h into local iomap.h
  ARM: OMAP1: Move most of plat/io.h into local iomap.h
  ARM: OMAP1: Move 16xx GPIO system clock to platform init code
  ARM: OMAP: Move omap_init_consistent_dma_size() to local common.h
  ARM: OMAP2+: Move SDRC related functions from io.h into local common.h
  ARM: OMAP2+: Drop DISPC L3 firewall code
  ARM: OMAP2xxx: PM: remove obsolete timer disable code in the suspend path
  ARM: OMAP: McSPI: Remove unused flag from struct omap2_mcspi_device_config

(update to latest rmk/for-arm-soc branch)

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-02-29 21:18:13 +00:00
Tony Lindgren 1b35af54ee ARM: OMAP2+: Fix L4_EMU_34XX_BASE error after iomap changes
With the introduction of iomap changes platform init code
fails for emu.c if CONFIG_OMAP3_EMU is selected:

arch/arm/mach-omap2/emu.c:35:8: error:
'L4_EMU_34XX_BASE' undeclared here (not in a function)

Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-28 17:33:41 -08:00
Tony Lindgren a5bee307ba Merge branch 'iomap' into cleanup 2012-02-28 14:27:01 -08:00
Arnd Bergmann 4d8cfec692 Merge branch 'cleanup-3.4' of git://github.com/hzhuang1/linux into next/cleanup
* 'cleanup-3.4' of git://github.com/hzhuang1/linux: (2 commits)
  rtc: sa1100: remove verification code of alarm
  rtc: sa1100: remove periodic code

(update to v3.3-rc5)
2012-02-28 12:40:01 +00:00
Haojian Zhuang 1d8c38c3d1 rtc: sa1100: remove verification code of alarm
Since next alarm time is already calculated in rtc common interface, we
needn't keep this logic in rtc-sa1100.c any more.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
2012-02-28 10:07:22 +08:00
Haojian Zhuang 61ee93cd18 rtc: sa1100: remove periodic code
Since periodic timer is already supported by hrtimer in rtc interface,
we needn't keep the duplicated code in rtc-sa1100.c any more.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
2012-02-28 10:05:20 +08:00
Arnd Bergmann a3a3c46641 Merge branch 'davinci/cleanups' into next/cleanup
* davinci/cleanups:
  ARM: davinci: add back dummy header files
  ARM: davinci: dm644x: don't force vpfe registeration on all boards
  ARM: davinci: dm644x: fix inconsistent variable naming
  ARM: davinci: dm644x: improve readability using macro
  ARM: davinci: streamline sysmod access
  ARM: davinci: create new common platform header for davinci
  ARM: davinci: dm646x: move private definitions to C file
  ARM: davinci: dm365: move private definitions to C file
  ARM: davinci: dm644x: move private definitions to C file

Conflicts:
	arch/arm/mach-davinci/board-dm644x-evm.c
	arch/arm/mach-davinci/board-neuros-osd2.c
	arch/arm/mach-davinci/board-sffsdr.c
2012-02-27 14:58:53 +00:00
Arnd Bergmann 6ea96e111e ARM: davinci: add back dummy header files
The mach/dm365.h and mach/dm646xh headers are currently being included
in some device drivers. The removal of those includes is already merged
in some subsystem trees, but adding the dummy files ensures that this
branch can be built standalone.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-02-27 14:55:22 +00:00
Arnd Bergmann 96a3eab338 Merge branch 'imx-cleanup' of git://git.pengutronix.de/git/imx/linux-2.6 into next/cleanup
* 'imx-cleanup' of git://git.pengutronix.de/git/imx/linux-2.6: (247 commits)
  ARM: Remove redundant ';' from avic_irq_set_priority()
  ARM: mx3: Let mx31 and mx35 share the same CCM header file
  ARM: plat-mxc: audmux-v1: Remove unneeded ifdef's

Update to v3.3-rc3

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-02-27 13:40:49 +00:00
Jesper Juhl a5a928c51f ARM: Remove redundant ';' from avic_irq_set_priority()
One semi-colon at the end of the return statement is sufficient.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-02-27 10:15:49 +01:00
Fabio Estevam 29781fa6b6 ARM: mx3: Let mx31 and mx35 share the same CCM header file
Let mx31 and mx35 share the same CCM header file

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-02-27 10:14:48 +01:00
Fabio Estevam 48d795616c ARM: plat-mxc: audmux-v1: Remove unneeded ifdef's
As we are able to build a single kernel that can run on mx21 and mx27,
there is no need for the ifdef's anymore inside audmux-v1.c.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-02-27 10:14:40 +01:00
Stephen Warren f35b431dde ARM: tegra: select required CPU and L2 errata options
The ARM IP revisions in Tegra are:
Tegra20: CPU r1p1, PL310 r2p0
Tegra30: CPU A01=r2p7/>=A02=r2p9, NEON r2p3-50, PL310 r3p1-50

Based on work by Olof Johansson, although the actual list of errata is
somewhat different here, since I added a bunch more and removed one PL310
erratum that doesn't seem applicable.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Cc: stable@vger.kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-26 14:24:51 -08:00
Linus Torvalds 6b21d18ed5 Linux 3.3-rc5 2012-02-25 12:18:16 -08:00
Linus Torvalds 00b10ecf2d Couple of minor driver fixes.
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Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Couple of minor driver fixes.

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (max34440) Fix resetting temperature history
  hwmon: (f75375s) Fix register write order when setting fans to full speed
  hwmon: (ads1015) Fix file leak in probe function
  hwmon: (max6639) Fix PPR register initialization to set both channels
  hwmon: (max6639) Fix FAN_FROM_REG calculation
2012-02-25 12:12:08 -08:00
Linus Torvalds 1e73fde581 Merge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
three kbuild fixes for 3.3:
 - make deb-pkg symlink race fix.
 - make coccicheck fix.
 - Dropping the check for modutils.  This is not a regression, but
   allows the module-init-tools replacement kmod work with the 3.3
   kernel.

* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  coccicheck: change handling of C={1,2} when M= is set
  builddeb: Don't create files in /tmp with predictable names
  kbuild: do not check for ancient modutils tools
2012-02-25 12:11:25 -08:00
Ian Kent a32744d4ab autofs: work around unhappy compat problem on x86-64
When the autofs protocol version 5 packet type was added in commit
5c0a32fc2c ("autofs4: add new packet type for v5 communications"), it
obvously tried quite hard to be word-size agnostic, and uses explicitly
sized fields that are all correctly aligned.

However, with the final "char name[NAME_MAX+1]" array at the end, the
actual size of the structure ends up being not very well defined:
because the struct isn't marked 'packed', doing a "sizeof()" on it will
align the size of the struct up to the biggest alignment of the members
it has.

And despite all the members being the same, the alignment of them is
different: a "__u64" has 4-byte alignment on x86-32, but native 8-byte
alignment on x86-64.  And while 'NAME_MAX+1' ends up being a nice round
number (256), the name[] array starts out a 4-byte aligned.

End result: the "packed" size of the structure is 300 bytes: 4-byte, but
not 8-byte aligned.

As a result, despite all the fields being in the same place on all
architectures, sizeof() will round up that size to 304 bytes on
architectures that have 8-byte alignment for u64.

Note that this is *not* a problem for 32-bit compat mode on POWER, since
there __u64 is 8-byte aligned even in 32-bit mode.  But on x86, 32-bit
and 64-bit alignment is different for 64-bit entities, and as a result
the structure that has exactly the same layout has different sizes.

So on x86-64, but no other architecture, we will just subtract 4 from
the size of the structure when running in a compat task.  That way we
will write the properly sized packet that user mode expects.

Not pretty.  Sadly, this very subtle, and unnecessary, size difference
has been encoded in user space that wants to read packets of *exactly*
the right size, and will refuse to touch anything else.

Reported-and-tested-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-25 12:10:27 -08:00
Linus Torvalds b52b80023f One InfiniBand/RDMA regression fix for 3.3:
- mlx4 SR-IOV changes added static exported functions, which doesn't
    build on powerpc at least.  Fix from Doug Ledford for this.
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Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

One InfiniBand/RDMA regression fix for 3.3:

 - mlx4 SR-IOV changes added static exported functions, which doesn't
   build on powerpc at least.  Fix from Doug Ledford for this.

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  mlx4_core: Exported functions can't be static
2012-02-24 20:03:14 -08:00
Linus Torvalds 16bca1d572 SCSI fixes on 20120224
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

SCSI fixes on 20120224:
 "This is a set of assorted bug fixes for power management, mpt2sas,
  ipr, the rdac device handler and quite a big chunk for qla2xxx (plus a
  use after free of scsi_host in scsi_scan.c). "

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] scsi_dh_rdac: Fix for unbalanced reference count
  [SCSI] scsi_pm: Fix bug in the SCSI power management handler
  [SCSI] scsi_scan: Fix 'Poison overwritten' warning caused by using freed 'shost'
  [SCSI] qla2xxx: Update version number to 8.03.07.13-k.
  [SCSI] qla2xxx: Proper detection of firmware abort error code for ISP82xx.
  [SCSI] qla2xxx: Remove resetting memory during device initialization for ISP82xx.
  [SCSI] qla2xxx: Complete mailbox command timedout to avoid initialization failures during next reset cycle.
  [SCSI] qla2xxx: Remove check for null fcport from host reset handler.
  [SCSI] qla2xxx: Correct out of bounds read of ISP2200 mailbox registers.
  [SCSI] qla2xxx: Remove errant clearing of MBX_INTERRUPT flag during CT-IOCB processing.
  [SCSI] qla2xxx: Clear options-flags while issuing stop-firmware mbx command.
  [SCSI] qla2xxx: Add an "is reset active" helper.
  [SCSI] qla2xxx: Add check for null fcport references in qla2xxx_queuecommand.
  [SCSI] qla2xxx: Propagate up abort failures.
  [SCSI] isci: Fix NULL ptr dereference when no firmware is being loaded
  [SCSI] ipr: fix eeh recovery for 64-bit adapters
  [SCSI] mpt2sas: Fix mismatch in mpt2sas_base_hard_reset_handler() mutex lock-unlock
2012-02-24 16:08:51 -08:00
Greg Dietsche 42f1c01b79 coccicheck: change handling of C={1,2} when M= is set
This patch reverts a portion of d0bc1fb4 so that coccicheck will
work properly when C=1 or C=2.

Reported-and-tested-by: Brice Goglin <Brice.Goglin@inria.fr>
Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-02-24 23:50:19 +01:00
Manjunath Hadli 12db9588ff ARM: davinci: dm644x: don't force vpfe registeration on all boards
Move all vpfe platform device registrations to the board specific
file.

This removes registration of vpfe platform devices on boards which
do not use vpfe.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2012-02-25 02:40:25 +05:30
Manjunath Hadli 314d738960 ARM: davinci: dm644x: fix inconsistent variable naming
Add dm644x_ prefix to names of v4l2 variables in dm644x.c
Add dm644xevm_ prefix to names of v4l2 variables in board-dm644x-evm.c.

This makes the code consistent with rest of these files.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2012-02-25 02:40:22 +05:30
Manjunath Hadli 51f31cb3a2 ARM: davinci: dm644x: improve readability using macro
Replace the VPSS base address "magic number" with the
define "DM644X_VPSS_BASE" to improve readability.

While at it, fix the indentation done using spaces in
this part of code.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2012-02-25 02:40:20 +05:30
Manjunath Hadli 5cfb19ac60 ARM: davinci: streamline sysmod access
There are instances of IO_ADDRESS() being used for system module
(sysmod) register access. Eliminate this in favor of a ioremap()
based access. ioremap() the entire sysmod address space once during
boot-up and provide a helper macro to access specific register
offsets within the address space.

With this, also eliminate ioremap() of specific sysmodule registers
related to VPIF happening in DM646x EVM code.

While at it, also eliminate some duplicate sysmod register offset macros
defined in code and place offset definitions at one place in davinci.h

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
[nsekhar@ti.com: removed the addition of ifndef __ASSEMBLER__
in davinci.h, eliminate IO_ADDRESS() usage left out in dm646x.c,
cleanup VPIF sysmodule register access as part of this patch and
keep all sysmod offsets in davinci.h Also, convert the WARN_ON()
on failure to setup sysmod base to BUG_ON()]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2012-02-25 02:40:17 +05:30
Manjunath Hadli 39c6d2d1d7 ARM: davinci: create new common platform header for davinci
Remove individual platform header files for dm365, dm355, dm644x
and dm646x and consolidate it into a single and common
header file davinci.h placed in arch/arm/mach-davinci.

This reduces the pollution in the include/mach and is consistent
with Russell's suggestions as part of his "pet peaves" mail.
(See #4 in: http://lists.infradead.org/pipermail/linux-arm-kernel/2011-November/071516.html)

While at it, fix the forward declaration of spi_board_info,
and include the right header file instead.

The further patches in the series take  advantage of this consolidation
for easy implementation of IO_ADDRESS elimination.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
[nsekhar@ti.com: make davinci.h the first local include file,
fix forward declaration of spi_board_info and add back Deep Root
Systems, LLC copyright]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2012-02-25 02:40:13 +05:30
Linus Torvalds e98092bedc Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] hdpvr: update picture controls to support firmware versions > 0.15
  [media] wl128x: fix build errors when GPIOLIB is not enabled
  [media] hdpvr: fix race conditon during start of streaming
  [media] omap3isp: Fix crash caused by subdevs now having a pointer to devnodes
  [media] imon: don't wedge hardware after early callbacks
2012-02-24 12:32:51 -08:00
Oleg Nesterov 971316f050 epoll: ep_unregister_pollwait() can use the freed pwq->whead
signalfd_cleanup() ensures that ->signalfd_wqh is not used, but
this is not enough. eppoll_entry->whead still points to the memory
we are going to free, ep_unregister_pollwait()->remove_wait_queue()
is obviously unsafe.

Change ep_poll_callback(POLLFREE) to set eppoll_entry->whead = NULL,
change ep_unregister_pollwait() to check pwq->whead != NULL under
rcu_read_lock() before remove_wait_queue(). We add the new helper,
ep_remove_wait_queue(), for this.

This works because sighand_cachep is SLAB_DESTROY_BY_RCU and because
->signalfd_wqh is initialized in sighand_ctor(), not in copy_sighand.
ep_unregister_pollwait()->remove_wait_queue() can play with already
freed and potentially reused ->sighand, but this is fine. This memory
must have the valid ->signalfd_wqh until rcu_read_unlock().

Reported-by: Maxime Bizon <mbizon@freebox.fr>
Cc: <stable@kernel.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-24 11:42:50 -08:00
Oleg Nesterov d80e731eca epoll: introduce POLLFREE to flush ->signalfd_wqh before kfree()
This patch is intentionally incomplete to simplify the review.
It ignores ep_unregister_pollwait() which plays with the same wqh.
See the next change.

epoll assumes that the EPOLL_CTL_ADD'ed file controls everything
f_op->poll() needs. In particular it assumes that the wait queue
can't go away until eventpoll_release(). This is not true in case
of signalfd, the task which does EPOLL_CTL_ADD uses its ->sighand
which is not connected to the file.

This patch adds the special event, POLLFREE, currently only for
epoll. It expects that init_poll_funcptr()'ed hook should do the
necessary cleanup. Perhaps it should be defined as EPOLLFREE in
eventpoll.

__cleanup_sighand() is changed to do wake_up_poll(POLLFREE) if
->signalfd_wqh is not empty, we add the new signalfd_cleanup()
helper.

ep_poll_callback(POLLFREE) simply does list_del_init(task_list).
This make this poll entry inconsistent, but we don't care. If you
share epoll fd which contains our sigfd with another process you
should blame yourself. signalfd is "really special". I simply do
not know how we can define the "right" semantics if it used with
epoll.

The main problem is, epoll calls signalfd_poll() once to establish
the connection with the wait queue, after that signalfd_poll(NULL)
returns the different/inconsistent results depending on who does
EPOLL_CTL_MOD/signalfd_read/etc. IOW: apart from sigmask, signalfd
has nothing to do with the file, it works with the current thread.

In short: this patch is the hack which tries to fix the symptoms.
It also assumes that nobody can take tasklist_lock under epoll
locks, this seems to be true.

Note:

	- we do not have wake_up_all_poll() but wake_up_poll()
	  is fine, poll/epoll doesn't use WQ_FLAG_EXCLUSIVE.

	- signalfd_cleanup() uses POLLHUP along with POLLFREE,
	  we need a couple of simple changes in eventpoll.c to
	  make sure it can't be "lost".

Reported-by: Maxime Bizon <mbizon@freebox.fr>
Cc: <stable@kernel.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-24 11:42:50 -08:00
Tony Lindgren acea7c7b81 ARM: OMAP2+: Limit omap_read/write usage to legacy USB drivers
Drivers should no longer use omap_read/write functions
but instead use ioremap + read/write functions.

As some USB legacy code is still shared between omap1 and
omap2420, let's limit the omap_read/write to plat/usb.h.

Note that the long term fix is to update the drivers to
use ioremap and read/write functions. That can now be
done as a separate patch series that is limited to the
USB drivers.

Also make sure the legacy omap1-keypad.c driver builds
if selected for 2420 based systems.

Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:34:36 -08:00
Tony Lindgren 2c799cef4d ARM: OMAP: Remove plat/io.h by splitting it into mach/io.h and mach/hardware.h
This is needed to minimize io.h so the SoC specific io.h
for ARMs can removed.

Note that minimal driver changes for DSS and RNG are needed to
include cpu.h for SoC detection macros.

Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:34:35 -08:00
Tony Lindgren ee0839c22c ARM: OMAP2+: Move most of plat/io.h into local iomap.h
There's no need to have these defines in plat/io.h.

Note that we now need to ifdef omap_read/write calls
as they will be available for omap1 only.

While at it, clean up the includes to group them like
they typically are grouped.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:34:35 -08:00
Tony Lindgren 2e3ee9f45b ARM: OMAP1: Move most of plat/io.h into local iomap.h
There's no need to have these in plat/io.h.

While at it, clean up the includes to group them
like they typically are grouped.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:34:34 -08:00
Tony Lindgren 63325ff235 ARM: OMAP1: Move 16xx GPIO system clock to platform init code
This way we can remove omap_read/write call from the GPIO driver
and remove include to linux/io.h.

Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:34:33 -08:00
Tony Lindgren a4f3419712 ARM: OMAP: Move omap_init_consistent_dma_size() to local common.h
We don't want to keep it in io.h as we want to remove io.h
for omap2+ for the common zImage support.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:34:33 -08:00
Tony Lindgren 258ee922d7 ARM: OMAP2+: Move SDRC related functions from io.h into local common.h
These should be local to omap2/3/4.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:34:33 -08:00
Tony Lindgren 1ca8c07bda ARM: OMAP2+: Drop DISPC L3 firewall code
This is only needed when using SRAM for framebuffer,
and the support for SRAM framebuffer is about to get
removed.

Otherwise we cannot move most of plat/io.h to be a local
iomap.h for mach-omap2.

Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:34:32 -08:00
Paul Walmsley 645c56a758 ARM: OMAP2xxx: PM: remove obsolete timer disable code in the suspend path
Remove omap_{read,write}l() from the 24xx PM code.  The clocksource
code should now handle what this was supposed to do.

Tested on N800 -- but it's hard to say whether this fixes anything.
OMAP24xx static suspend path is currently broken, and this patch
doesn't change that.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Rob Herring <robherring2@gmail.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:34:32 -08:00
Jarkko Nikula 0aac881246 ARM: OMAP: McSPI: Remove unused flag from struct omap2_mcspi_device_config
Flag single_channel in struct omap2_mcspi_device_config is not used
by drivers/spi/spi-omap2-mcspi.c so we may remove it from include/plat/mcspi.h
and affected board files.

Signed-off-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-02-24 10:33:58 -08:00
Linus Torvalds 855a85f704 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Quoth Chris:
 "This is later than I wanted because I got backed up running through
  btrfs bugs from the Oracle QA teams.  But they are all bug fixes that
  we've queued and tested since rc1.

  Nothing in particular stands out, this just reflects bug fixing and QA
  done in parallel by all the btrfs developers.  The most user visible
  of these is:

    Btrfs: clear the extent uptodate bits during parent transid failures

  Because that helps deal with out of date drives (say an iscsi disk
  that has gone away and come back).  The old code wasn't always
  properly retrying the other mirror for this type of failure."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (24 commits)
  Btrfs: fix compiler warnings on 32 bit systems
  Btrfs: increase the global block reserve estimates
  Btrfs: clear the extent uptodate bits during parent transid failures
  Btrfs: add extra sanity checks on the path names in btrfs_mksubvol
  Btrfs: make sure we update latest_bdev
  Btrfs: improve error handling for btrfs_insert_dir_item callers
  Btrfs: be less strict on finding next node in clear_extent_bit
  Btrfs: fix a bug on overcommit stuff
  Btrfs: kick out redundant stuff in convert_extent_bit
  Btrfs: skip states when they does not contain bits to clear
  Btrfs: check return value of lookup_extent_mapping() correctly
  Btrfs: fix deadlock on page lock when doing auto-defragment
  Btrfs: fix return value check of extent_io_ops
  btrfs: honor umask when creating subvol root
  btrfs: silence warning in raid array setup
  btrfs: fix structs where bitfields and spinlock/atomic share 8B word
  btrfs: delalloc for page dirtied out-of-band in fixup worker
  Btrfs: fix memory leak in load_free_space_cache()
  btrfs: don't check DUP chunks twice
  Btrfs: fix trim 0 bytes after a device delete
  ...
2012-02-24 09:02:53 -08:00