Just setting the "error" to error number is enough on failure and It
doesn't require to set "error" variable to zero in each switch case,
since it was already initialized with zero. And also removed return 0
in switch case with break statement
Signed-off-by: Sasikantha babu <sasikanth.v19@gmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Serge E. Hallyn <serge@hallyn.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
efi_setup_pcdp_console() is called during boot to parse the HCDP/PCDP
EFI system table and setup an early console for printk output. The
routine uses ioremap/iounmap to setup access to the HCDP/PCDP table
information.
The call to ioremap is happening early in the boot process which leads
to a panic on x86_64 systems:
panic+0x01ca
do_exit+0x043c
oops_end+0x00a7
no_context+0x0119
__bad_area_nosemaphore+0x0138
bad_area_nosemaphore+0x000e
do_page_fault+0x0321
page_fault+0x0020
reserve_memtype+0x02a1
__ioremap_caller+0x0123
ioremap_nocache+0x0012
efi_setup_pcdp_console+0x002b
setup_arch+0x03a9
start_kernel+0x00d4
x86_64_start_reservations+0x012c
x86_64_start_kernel+0x00fe
This replaces the calls to ioremap/iounmap in efi_setup_pcdp_console()
with calls to early_ioremap/early_iounmap which can be called during
early boot.
This patch was tested on an x86_64 prototype system which uses the
HCDP/PCDP table for early console setup.
Signed-off-by: Greg Pearson <greg.pearson@hp.com>
Acked-by: Khalid Aziz <khalid.aziz@hp.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit a6bc32b899 ("mm: compaction: introduce sync-light migration for
use by compaction") changed the declaration of migrate_pages() and
migrate_huge_pages().
But it missed changing the argument of migrate_huge_pages() in
soft_offline_huge_page(). In this case, we should call
migrate_huge_pages() with MIGRATE_SYNC.
Additionally, there is a mismatch between type the of argument and the
function declaration for migrate_pages().
Signed-off-by: Joonsoo Kim <js1304@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Mel Gorman <mgorman@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Due to a merge conflict we are getting this:
drivers/regulator/s5m8767.c: In function ‘s5m8767_pmic_probe’:
drivers/regulator/s5m8767.c:575:2: error: implicit declaration of function
‘s5m_reg_write’ [-Werror=implicit-function-declaration]
This is fixed by fully converting this driver to the new s5m API.
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
fl_type is not a bitmap.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Commit 57208fa7e5 "NFS: Create an write_pageio_init() function"
did not modify the calls in direct.c, preventing direct io from
using pnfs. This reintroduces that capability.
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Commit 1abb50886a "NFS: Create an read_pageio_init() function"
did not modify the call in direct.c, preventing direct io from
using pnfs. This reintroduces that capability.
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Add a missing set of braces that commit 4e0038b6b2
("SUNRPC: Move clnt->cl_server into struct rpc_xprt")
forgot.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org [>= 3.4]
Fix numerous repeated warnings by making the stub function
void instead of non-void:
fs/nfs/nfs4_fs.h: In function 'nfs4_unregister_sysctl':
fs/nfs/nfs4_fs.h:385:1: warning: no return statement in function returning non-void
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Numerous cleanups and several bug fixes. Here are some highlights:
* Discontiguous directory buffer support
* Inode allocator refactoring
* Removal of the IO lock in inode reclaim
* Implementation of .update_time
* Fix for handling of EOF in xfs_vm_writepage
* Fix for races in xfsaild, and idle mode is re-enabled
* Fix for a crash in xfs_buf completion handlers on unmount.
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Merge tag 'for-linus-v3.6-rc1' of git://oss.sgi.com/xfs/xfs
Pull xfs update from Ben Myers:
"Numerous cleanups and several bug fixes. Here are some highlights:
- Discontiguous directory buffer support
- Inode allocator refactoring
- Removal of the IO lock in inode reclaim
- Implementation of .update_time
- Fix for handling of EOF in xfs_vm_writepage
- Fix for races in xfsaild, and idle mode is re-enabled
- Fix for a crash in xfs_buf completion handlers on unmount."
Fix up trivial conflicts in fs/xfs/{xfs_buf.c,xfs_log.c,xfs_log_priv.h}
due to duplicate patches that had already been merged for 3.5.
* tag 'for-linus-v3.6-rc1' of git://oss.sgi.com/xfs/xfs: (44 commits)
xfs: wait for the write the superblock on unmount
xfs: re-enable xfsaild idle mode and fix associated races
xfs: remove iolock lock classes
xfs: avoid the iolock in xfs_free_eofblocks for evicted inodes
xfs: do not take the iolock in xfs_inactive
xfs: remove xfs_inactive_attrs
xfs: clean up xfs_inactive
xfs: do not read the AGI buffer in xfs_dialloc until nessecary
xfs: refactor xfs_ialloc_ag_select
xfs: add a short cut to xfs_dialloc for the non-NULL agbp case
xfs: remove the alloc_done argument to xfs_dialloc
xfs: split xfs_dialloc
xfs: remove xfs_ialloc_find_free
Prefix IO_XX flags with XFS_IO_XX to avoid namespace colision.
xfs: remove xfs_inotobp
xfs: merge xfs_itobp into xfs_imap_to_bp
xfs: handle EOF correctly in xfs_vm_writepage
xfs: implement ->update_time
xfs: fix comment typo of struct xfs_da_blkinfo.
xfs: do not call xfs_bdstrat_cb in xfs_buf_iodone_callbacks
...
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Merge tag 'virtio-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
Pull virtio update from Rusty Russell:
"Virtio patches, mainly hotplugging fixes."
* tag 'virtio-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
virtio-blk: return VIRTIO_BLK_F_FLUSH to header.
virtio-blk: allow toggling host cache between writeback and writethrough
virtio-blk: Use block layer provided spinlock
virtio-blk: Reset device after blk_cleanup_queue()
virtio-blk: Call del_gendisk() before disable guest kick
virtio: rng: s3/s4 support
virtio: rng: split out common code in probe / remove for s3/s4 ops
virtio: rng: don't wait on host when module is going away
virtio: rng: allow tasks to be killed that are waiting for rng input
virtio ids: fix comment for virtio-rng
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Merge tag 'please-pull-ia64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux
Pull misc ia64 build fixes from Tony Luck.
* tag 'please-pull-ia64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
[IA64] Redefine ATOMIC_INIT and ATOMIC64_INIT to drop the casts
[IA64] Rename platform_name to ia64_platform_name
[IA64] Mark PARAVIRT and KVM as broken
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Merge tag 'localmodconfig-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-kconfig
Pull localmodconfig updates from Steven Rostedt:
"Improve localmodconfig to remove even more unused module configs.
These changes drastically improve the amount of module configs removed
from a config file. It also adds some debug that I can have users
easily enable if things do not work for them."
* tag 'localmodconfig-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-kconfig:
localmodconfig: Add debug environment variable LOCALMODCONFIG_DEBUG
localmodconfig: Check if configs are already set for selects
localmodconfig: Read in orig config file to avoid extra processing
localmodconfig: Comments and cleanup for streamline_config.pl
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Merge tag 'ktest-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
Pull ktest changes from Steven Rostedt:
"Set of updates for v3.6 (some fixes too)
Seems that you opened the merge window the day I left for the beach.
I just got back (yes us Americans only take a week vacation), and just
got the last of my ktest quilt queue into git."
* tag 'ktest-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
ktest: Allow perl regex expressions in conditional statements
ktest: Ignore errors it tests if IGNORE_ERRORS is set
ktest: Reset saved min (force) configs for each test
ktest: Add check for bug or panic during reboot
ktest: Add MAX_MONITOR_WAIT option
ktest: Fix config bisect with how make oldnoconfig works
ktest: Add CONFIG_BISECT_CHECK option
ktest: Add PRE_INSTALL option
ktest: Add PRE/POST_KTEST and TEST options
ktest: Remove commented exit
We have support for a few new drivers:
- Samsung s2mps11
- Wolfson Microelectronics wm5102 and wm5110
- Marvell 88PM800 and 88PM805
- TI twl6041
We also have our regular driver improvements:
- Device tree and IRQ domain support for STE AB8500
- Regmap and devm_* API conversion for TI tps6586x
- Device tree support for Samsung max77686
- devm_* API conversion for STE AB3100
Besides that, quite a lot of fixing and cleanup for mc13xxx, tps65910,
tps65090, da9052 and twl-core.
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Merge tag 'mfd-3.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Pull MFD bits from Samuel Ortiz:
"We have support for a few new drivers:
- Samsung s2mps11
- Wolfson Microelectronics wm5102 and wm5110
- Marvell 88PM800 and 88PM805
- TI twl6041
We also have our regular driver improvements:
- Device tree and IRQ domain support for STE AB8500
- Regmap and devm_* API conversion for TI tps6586x
- Device tree support for Samsung max77686
- devm_* API conversion for STE AB3100
Besides that, quite a lot of fixing and cleanup for mc13xxx, tps65910,
tps65090, da9052 and twl-core."
Fix up mostly trivial conflicts, with the exception of
drivers/usb/host/ehci-omap.c in particular, which had some
re-organization of the reset sequence (commit 1a49e2ac9651: "EHCI:
centralize controller initialization") that clashed with commit
2761a63945 ("mfd: USB: Fix the omap-usb EHCI ULPI PHY reset fix
issues").
In particular, commit 2761a63945 moved the usb_add_hcd() to the
*middle* of the reset sequence, which clashes fairly badly with the
reset sequence re-organization (although it could have been done inside
the new omap_ehci_init() function).
I left that part of commit 2761a63945 just undone.
* tag 'mfd-3.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (110 commits)
mfd: Ensure AB8500 platform data is passed through db8500-prcmu to MFD Core
mfd: Arizone core should select MFD_CORE
mfd: Fix arizona-irq.c build by selecting REGMAP_IRQ
mfd: Add debug trace on entering and leaving arizone runtime suspend
mfd: Correct tps65090 cell names
mfd: Remove gpio support from tps6586x core driver
ARM: tegra: defconfig: Enable tps6586x gpio
gpio: tps6586x: Add gpio support through platform driver
mfd: Cache tps6586x register through regmap
mfd: Use regmap for tps6586x register access.
mfd: Use devm managed resources for tps6586x
input: Add onkey support for 88PM80X PMIC
mfd: Add support for twl6041
mfd: Fix twl6040 revision information
mfd: Matches should be NULL when populate anatop child devices
input: ab8500-ponkey: Create AB8500 domain IRQ mapping
mfd: Add missing out of memory check for pcf50633
Documentation: Describe the AB8500 Device Tree bindings
mfd: Add tps65910 32-kHz-crystal-input init
mfd: Drop modifying mc13xxx driver's id_table in probe
...
Pull x86 platform driver updates from Matthew Garrett:
"Nothing overly dramatic here - improved support for the Classmate,
some random small fixes and a rework of backlight management to deal
with some of the more awkward cases."
* 'linux-next' of git://cavan.codon.org.uk/platform-drivers-x86:
thinkpad_acpi: Free hotkey_keycode_map after unregistering tpacpi_inputdev
thinkpad_acpi: Fix a memory leak during module exit
thinkpad_acpi: Flush the workqueue before freeing tpacpi_leds
dell-laptop: Add 6 machines to touchpad led quirk
ACER: Fix Smatch double-free issue
ACER: Fix up sparse warning
asus-nb-wmi: add some video toggle keys
asus-nb-wmi: add wapf quirk for ASUS machines
classmate-laptop: Fix extra keys hardware id.
classmate-laptop: Add support for Classmate V4 accelerometer.
asus-wmi: enable resume on lid open
asus-wmi: control backlight power through WMI, not ACPI
samsung-laptop: support R40/R41
acpi/video_detect: blacklist samsung x360
samsung-laptop: X360 ACPI backlight device is broken
drivers-platform-x86: use acpi_video_dmi_promote_vendor()
acpi: add a way to promote/demote vendor backlight drivers
ACER: Add support for accelerometer sensor
asus-wmi: use ASUS_WMI_METHODID_DSTS2 as default DSTS ID.
Pull MIPS updates from Ralf Baechle:
"More hardware support across the field including a bunch of device
drivers. The highlight however really are further steps towards
device tree.
This has been sitting in -next for ages. All MIPS _defconfigs have
been tested to boot or where I don't have hardware available, to at
least build fine."
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (77 commits)
MIPS: Loongson 1B: Add defconfig
MIPS: Loongson 1B: Add board support
MIPS: Netlogic: early console fix
MIPS: Netlogic: Fix indentation of smpboot.S
MIPS: Netlogic: remove cpu_has_dc_aliases define for XLP
MIPS: Netlogic: Remove unused pcibios_fixups
MIPS: Netlogic: Add XLP SoC devices in FDT
MIPS: Netlogic: Add IRQ mappings for more devices
MIPS: Netlogic: USB support for XLP
MIPS: Netlogic: XLP PCIe controller support.
MIPS: Netlogic: Platform changes for XLR/XLS I2C
MIPS: Netlogic: Platform NAND/NOR flash support
MIPS: Netlogic: Platform changes for XLS USB
MIPS: Netlogic: Remove NETLOGIC_ prefix
MIPS: Netlogic: SMP wakeup code update
MIPS: Netlogic: Update comments in smpboot.S
MIPS: BCM63XX: Add 96328avng reference board
MIPS: Expose PCIe drivers for MIPS
MIPS: BCM63XX: Add PCIe Support for BCM6328
MIPS: BCM63XX: Move the PCI initialization into its own function
...
Add '=~' and '!~' to the list of allowed conditionals for DEFAULT and
TEST_START section if statements.
ie.
TEST_START IF TEST =~ .*test$
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
The option IGNORE_ERRORS is used to allow a test to succeed even if a
warning appears from the kernel. Sometimes kernels will produce warnings
that are not associated with a test, and the user wants to test
something else.
The IGNORE_ERRORS works for boot up, but was not preventing test runs to
succeed if the kernel produced a warning.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Pull SLAB changes from Pekka Enberg:
"Most of the changes included are from Christoph Lameter's "common
slab" patch series that unifies common parts of SLUB, SLAB, and SLOB
allocators. The unification is needed for Glauber Costa's "kmem
memcg" work that will hopefully appear for v3.7.
The rest of the changes are fixes and speedups by various people."
* 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux: (32 commits)
mm: Fix build warning in kmem_cache_create()
slob: Fix early boot kernel crash
mm, slub: ensure irqs are enabled for kmemcheck
mm, sl[aou]b: Move kmem_cache_create mutex handling to common code
mm, sl[aou]b: Use a common mutex definition
mm, sl[aou]b: Common definition for boot state of the slab allocators
mm, sl[aou]b: Extract common code for kmem_cache_create()
slub: remove invalid reference to list iterator variable
mm: Fix signal SIGFPE in slabinfo.c.
slab: move FULL state transition to an initcall
slab: Fix a typo in commit 8c138b "slab: Get rid of obj_size macro"
mm, slab: Build fix for recent kmem_cache changes
slab: rename gfpflags to allocflags
slub: refactoring unfreeze_partials()
slub: use __cmpxchg_double_slab() at interrupt disabled place
slab/mempolicy: always use local policy from interrupt context
slab: Get rid of obj_size macro
mm, sl[aou]b: Extract common fields from struct kmem_cache
slab: Remove some accessors
slab: Use page struct fields instead of casting
...
Pull treewide kbuild cleanup from Michal Marek:
"Paul Bolle did a cleanup of <asm/*.h> headers in various
architectures. Because the patch touch several architectures at
once, it was easiest for me to apply them to the kbuild tree."
* 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
Remove useless wrappers of asm-generic/rmap.h
Remove useless wrappers of asm-generic/ipc.h
Remove useless wrappers of asm-generic/cpumask.h
Pull misc kbuild changes from Michal Marek:
"This is the non-critical part of kbuild for v3.6-rc1:
- Two new coccinelle semantic patches
- New scripts/tags.sh regexp
- scripts/config improvements that I mistakenly applied here instead
of in the kconfig branch (but there are no conflicts)
- Debian packaging fixes"
* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
scripts/tags.sh: Teach [ce]tags about libtraceeevent error codes
scripts/coccinelle: list iterator variable semantic patch
scripts/coccinelle: Find threaded IRQs requests which are missing IRQF_ONESHOT
deb-pkg: Add all Makefiles to header package
deb-pkg: Install linux-firmware-image in versioned dir
scripts/config: add option to undef a symbol
scripts/config: allow alternate prefix to config option symbol
scripts/config: add option to not upper-case symbols
Pull kconfig changes from Michal Marek:
- kconfig Makefile portability fixes
- menuconfig/nconfig help pager usability fix
- .gitignore cleanup
- quoting fix in scripts/config
- Makefile prints errors to stderr
- support for arbitrarily log lines in .config
- fix oldnoconfig description in 'make help'
* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
kconfig: Document oldnoconfig to what it really does
nconf: add u, d command keys in scroll windows
menuconfig: add u, d, q command keys in text boxes
scripts/config: fix double-quotes un-escaping
kconfig: Print errors to stderr in the Makefile
kconfig: allow long lines in config file
kconfig: remove lkc_defs.h from .gitignore and dontdiff
xconfig: add quiet rule for moc
xconfig: use pkgconfig to find moc
kconfig: fix check-lxdialog for DLL platforms
kconfig: check ncursesw headers first in check-lxdialog
kconfig/nconf: fix compile with ncurses reentrant API
Pull kbuild fix from Michal Marek:
"The main kbuild branch ended up with a single commit this time, a fix
to send errors to stderr"
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
kbuild: Print errors to stderr
Pull security subsystem bugfixes from James Morris.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
selinux: fix selinux_inode_setxattr oops
KEYS: linux/key-type.h needs linux/errno.h
smack: off by one error
- Flip the thin target into new read-only or failed modes if errors
are detected;
- Handle chunk sizes that are not powers of two in the snapshot and
thin targets;
- Provide a way for userspace to avoid replacing an already-loaded
multipath hardware handler while booting;
- Reduce dm_thin_endio_hook slab size to avoid allocation failures;
- Numerous small changes and cleanups to the code.
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Merge tag 'dm-3.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm
Pull device-mapper updates from Alasdair G Kergon:
- Flip the thin target into new read-only or failed modes if errors
are detected;
- Handle chunk sizes that are not powers of two in the snapshot and
thin targets;
- Provide a way for userspace to avoid replacing an already-loaded
multipath hardware handler while booting;
- Reduce dm_thin_endio_hook slab size to avoid allocation failures;
- Numerous small changes and cleanups to the code.
* tag 'dm-3.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm: (63 commits)
dm thin: commit before gathering status
dm thin: add read only and fail io modes
dm thin metadata: introduce dm_pool_abort_metadata
dm thin metadata: introduce dm_pool_metadata_set_read_only
dm persistent data: introduce dm_bm_set_read_only
dm thin: reduce number of metadata commits
dm thin metadata: add dm_thin_changed_this_transaction
dm thin metadata: add format option to dm_pool_metadata_open
dm thin metadata: tidy up open and format error paths
dm thin metadata: only check incompat features on open
dm thin metadata: remove duplicate pmd initialisation
dm thin metadata: remove create parameter from __create_persistent_data_objects
dm thin metadata: move __superblock_all_zeroes to __open_or_format_metadata
dm thin metadata: remove nr_blocks arg from __create_persistent_data_objects
dm thin metadata: split __open or format metadata
dm thin metadata: use struct dm_pool_metadata members in __open_or_format_metadata
dm thin metadata: zero unused superblock uuid
dm thin metadata: lift __begin_transaction out of __write_initial_superblock
dm thin metadata: move dm_commit_pool_metadata into __write_initial_superblock
dm thin metadata: factor out __write_initial_superblock
...
* patches_for_v3.6: (174 commits)
v4l: Export v4l2-common.h in include/linux/Kbuild
media: Revert "[media] Terratec Cinergy S2 USB HD Rev.2"
[media] media: Use pr_info not homegrown pr_reg macro
[media] Terratec Cinergy S2 USB HD Rev.2
[media] v4l: Correct conflicting V4L2 subdev selection API documentation
[media] Feature removal: V4L2 selections API target and flag definitions
[media] v4l: Unify selection flags documentation
[media] v4l: Unify selection flags
[media] v4l: Common documentation for selection targets
[media] v4l: Unify selection targets across V4L2 and V4L2 subdev interfaces
[media] v4l: Remove "_ACTUAL" from subdev selection API target definition names
[media] V4L: Remove "_ACTIVE" from the selection target name definitions
[media] media: dvb-usb: print mac address via native %pM
[media] s5p-tv: Use module_i2c_driver in sii9234_drv.c file
[media] media: gpio-ir-recv: add allowed_protos for platform data
[media] s5p-jpeg: Use module_platform_driver in jpeg-core.c file
[media] saa7134: fix spelling of detach in label
[media] cx88-blackbird: replace ioctl by unlocked_ioctl
[media] cx88: don't use current_norm
[media] cx88: fix a number of v4l2-compliance violations
...
Pull DMA-mapping updates from Marek Szyprowski:
"Those patches are continuation of my earlier work.
They contains extensions to DMA-mapping framework to remove limitation
of the current ARM implementation (like limited total size of DMA
coherent/write combine buffers), improve performance of buffer sharing
between devices (attributes to skip cpu cache operations or creation
of additional kernel mapping for some specific use cases) as well as
some unification of the common code for dma_mmap_attrs() and
dma_mmap_coherent() functions. All extensions have been implemented
and tested for ARM architecture."
* 'for-linus-for-3.6-rc1' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
ARM: dma-mapping: add support for DMA_ATTR_SKIP_CPU_SYNC attribute
common: DMA-mapping: add DMA_ATTR_SKIP_CPU_SYNC attribute
ARM: dma-mapping: add support for dma_get_sgtable()
common: dma-mapping: introduce dma_get_sgtable() function
ARM: dma-mapping: add support for DMA_ATTR_NO_KERNEL_MAPPING attribute
common: DMA-mapping: add DMA_ATTR_NO_KERNEL_MAPPING attribute
common: dma-mapping: add support for generic dma_mmap_* calls
ARM: dma-mapping: fix error path for memory allocation failure
ARM: dma-mapping: add more sanity checks in arm_dma_mmap()
ARM: dma-mapping: remove custom consistent dma region
mm: vmalloc: use const void * for caller argument
scatterlist: add sg_alloc_table_from_pages function
Pull a howmon update from Jean Delvare.
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
hwmon: struct x86_cpu_id arrays can be __initconst
Pull Exynos DRM changes from Dave Airlie:
"So I totally missed Inki's pull request for -next, its fully exynos
self contained."
(I took just the actual commits, not Dave's two extraneous merges)
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (30 commits)
drm/exynos: fixed exception to page allocation failure
drm/exynos: use __free_page() to deallocate memory
drm/exynos: fixed a comment to gem size.
drm/exynos: removed unnecessary variable
drm/exynos: do not release memory region from exporter.
drm/exynos: set buffer type from exporter.
drm/exynos: use alloc_page() to allocate pages.
drm/exynos: fixed build warning.
drm/exynos: fixed edid data setting at vidi connection request
drm/exynos: check if raw edid data is fake or not for test
drm/exynos: set edid fake data only for test.
drm/exynos: removed unnecessary declaration.
drm/exynos: fix buffer pitch calculation
drm/exynos: check for null in return value of dma_buf_map_attachment()
drm/exynos: return NULL if exynos_pages_to_sg fails
drm/exynos: Use devm_* functions in exynos_mixer.c
drm/exynos: Use devm_* functions in exynos_hdmi.c
drm/exynos: Use devm_* functions in exynos_drm_fimd.c
drm/exynos: Add missing static storage class specifier
drm/exynos: add property for crtc mode
...
Pull input updates from Dmitry Torokhov:
"A new driver for FT5x06 based EDT displays and a couple of other
driver changes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: synaptics - handle out of bounds values from the hardware
Input: wacom - add support to Cintiq 22HD
Input: add driver for FT5x06 based EDT displays
Pull EDAC patches from Mauro Carvalho Chehab:
- the second part of the EDAC rework:
- Add the sysfs nodes that exports the real memory layout, instead
of the fake one (needed to properly represent Intel memory
controllers since 2002)
- convert EDAC MC to use "struct device" instead of creating the
sysfs nodes via the kobj API
- adds a tracepoint to represent memory errors
- some cleanup patches
- some fixes at i5000, i5400 and EDAC core
- a new EDAC driver for Caldera.
* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (33 commits)
edac i5000, i5400: fix pointer math in i5000_get_mc_regs()
edac: allow specifying the error count with fake_inject
edac: add support for Calxeda highbank L2 cache ecc
edac: add support for Calxeda highbank memory controller
edac: create top-level debugfs directory
sb_edac: properly handle error count
i7core_edac: properly handle error count
edac: edac_mc_handle_error(): add an error_count parameter
edac: remove arch-specific parameter for the error handler
amd64_edac: Don't pass driver name as an error parameter
edac_mc: check for allocation failure in edac_mc_alloc()
edac: Increase version to 3.0.0
edac_mc: Cleanup per-dimm_info debug messages
edac: Convert debugfX to edac_dbg(X,
edac: Use more normal debugging macro style
edac: Don't add __func__ or __FILE__ for debugf[0-9] msgs
Edac: Add ABI Documentation for the new device nodes
edac: move documentation ABI to ABI/testing/sysfs-devices-edac
i7core_edac: change the mem allocation scheme to make Documentation/kobject.txt happy
edac: change the mem allocation scheme to make Documentation/kobject.txt happy
...
This branch contains board updates, mostly for shmobile, but also a
couple for PXA.
The shmobile platforms are still in the early stages of DT enablement,
so there's a bit more updates here than we'd ideally want to see:
- regulator updates to provide some fixed regulators on several boards
- gpio support updates for multiple boards
- misc updates for recently-introduced boards armadillo800eva and kzm9g
- defconfig updates
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Merge tag 'boards2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc board updates from Olof Johansson:
"This branch contains board updates, mostly for shmobile, but also a
couple for PXA.
The shmobile platforms are still in the early stages of DT enablement,
so there's a bit more updates here than we'd ideally want to see:
- regulator updates to provide some fixed regulators on several
boards
- gpio support updates for multiple boards
- misc updates for recently-introduced boards armadillo800eva and
kzm9g
- defconfig updates"
* tag 'boards2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits)
ARM: shmobile: kzm9g: defconfig enable INOTIFY_USER
ARM: mach-shmobile: armadillo800eva: defconfig Allow use of armhf userspace
ARM: shmobile: armadillo800eva: A3SP domain includes USB
ARM: shmobile: armadillo800eva: A4LC domain includes LCDC
ARM: shmobile: armadillo800eva: USB Func enables external IRQ mode
ARM: mach-shmobile: kzm9d: Add defconfig
ARM: mach-shmobile: select the fixed regulator driver on several boards
ARM: mach-shmobile: add SDHI2 to the 2.8V fixed regulator consumers on kzm9g
ARM: pxa: hx4700: Use DEFINE_RES_* macros consistently
ARM: pxa: remove eseries.h
ARM: mach-shmobile: add fixed voltage regulators to marzen
ARM: mach-shmobile: add fixed voltage regulators to kzm9g
ARM: mach-shmobile: add fixed voltage regulators to kzm9d
ARM: mach-shmobile: add fixed voltage regulators to kota2
ARM: mach-shmobile: add fixed voltage regulators to g4evm
ARM: mach-shmobile: add fixed voltage regulators to bonito
ARM: mach-shmobile: add fixed voltage regulators to armadillo800eva
ARM: mach-shmobile: add fixed voltage regulators to ap4evb
ARM: mach-shmobile: add fixed voltage regulators to ag5evm
ARM: mach-shmobile: add 3.3V and 1.8V fixed regulators to mackerel
...
This is the second batch of SoC updates for the 3.6 merge window,
containing parts that arrived close to the merge window opening and
thus needed to sit in linux-next for a while.
Most contents is updates of Renesas shmobile, with a couple of
Samsung Exynos patches in the mix.
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Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc soc updates from Olof Johansson:
"This is the second batch of SoC updates for the 3.6 merge window,
containing parts that arrived close to the merge window opening and
thus needed to sit in linux-next for a while.
Most contents is updates of Renesas shmobile, with a couple of Samsung
Exynos patches in the mix."
* tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (39 commits)
ARM: S3C64XX: Add header file protection macros in pm-core.h
[CPUFREQ] EXYNOS5250: Add support max 1.7GHz for EXYNOS5250
ARM: EXYNOS: Add G2D related clock entries for SMDK4X12
ARM: EXYNOS: Move G2D clock entries to clock-exynos4210.c file
ARM: shmobile: Fix build problem in pm-sh7372.c for unusual .config
ARM: shmobile: Take cpuidle dependencies into account correctly
ARM: mach-shmobile: sh7377 generic board support via DT
ARM: mach-shmobile: r8a7740 generic board support via DT
ARM: shmobile: sh7372: completely switch over to using pm-rmobile API
ARM: shmobile: ap4evb: switch to using pm-rmobile API
ARM: shmobile: mackerel: switch to using pm-rmobile API
ARM: shmobile: sh7372: add pm-rmobile domain support
ARM: shmobile: r8a7740: add A4LC pm domain support
ARM: shmobile: r8a7740: add A3SP pm domain support
ARM: shmobile: r8a7740: add A4S pm domain support
ARM: shmobile: r8a7740: fixup: MSEL1CR 7bit control
ARM: shmobile: soc-core: add R-mobile PM domain common APIs
ARM: shmobile: sh7372 A3SM CPUIdle support
ARM: shmobile: Use INTCA with sh7372 A3SM power domain
ARM: mach-shmobile: Convert sh_clk_mstp32_register to sh_clk_mstp_register
...
- A new sysfs attribute to tell local and remote nodes apart.
Useful to set special permissions/ ownership of local nodes'
/dev/fw*, to start daemons on them (for diagnostics, management,
AV targets, VersaPHY initiator or targets...), to pick up their
GUID to use it as GUID of an SBP2 target instance, and of course
for informational purposes.
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Merge tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire updates from Stefan Richter:
- Small fixes and optimizations.
- A new sysfs attribute to tell local and remote nodes apart.
Useful to set special permissions/ ownership of local nodes'
/dev/fw*, to start daemons on them (for diagnostics, management,
AV targets, VersaPHY initiator or targets...), to pick up their
GUID to use it as GUID of an SBP2 target instance, and of course
for informational purposes.
* tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: core: document is_local sysfs attribute
firewire: core: add is_local sysfs device attribute
firewire: ohci: initialize multiChanMode bits after reset
firewire: core: fix multichannel IR with buffers larger than 2 GB
firewire: ohci: sanity-check MMIO resource
firewire: ohci: lazy bus time initialization
firewire: core: allocate the low memory region
firewire: core: make address handler length 64 bits
Pull PWM subsystem from Thierry Reding:
"The new PWM subsystem aims at collecting all implementations of the
legacy PWM API and to eventually replace it completely.
The subsystem has been in development for over half a year now and
many drivers have already been converted. It has been in linux-next
for a couple of weeks and there have been no major issues so I think
it is ready for inclusion in your tree."
Arnd Bergmann <arnd@arndb.de>:
"Very much Ack on the new subsystem. It uses the interface
declarations as the previously separate pwm drivers, so nothing
changes for now in the drivers using it, although it enables us to
change those more easily in the future if we want to.
This work is also one of the missing pieces that are required to
eventually build ARM kernels for multiple platforms, which is
currently prohibited (amongs other things) by the fact that you cannot
have more than one driver exporting the pwm functions."
Tested-and-acked-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Philip, Avinash <avinashphilip@ti.com> # TI's AM33xx platforms
Acked-By: Alexandre Pereira da Silva <aletes.xgr@gmail.com> # LPC32XX
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sachin Kamat <sachin.kamat@linaro.org>
Fix up trivial conflicts with other cleanups and DT updates.
* 'for-3.6' of git://gitorious.org/linux-pwm/linux-pwm: (36 commits)
pwm: pwm-tiehrpwm: PWM driver support for EHRPWM
pwm: pwm-tiecap: PWM driver support for ECAP APWM
pwm: fix used-uninitialized warning in pwm_get()
pwm: add lpc32xx PWM support
pwm_backlight: pass correct brightness to callback
pwm: Use pr_* functions in pwm-samsung.c file
pwm: Convert pwm-samsung to use devm_* APIs
pwm: Convert pwm-tegra to use devm_clk_get()
pwm: pwm-mxs: Return proper error if pwmchip_remove() fails
pwm: pwm-bfin: Return proper error if pwmchip_remove() fails
pwm: pxa: Propagate pwmchip_remove() error
pwm: Convert pwm-pxa to use devm_* APIs
pwm: Convert pwm-vt8500 to use devm_* APIs
pwm: Convert pwm-imx to use devm_* APIs
pwm: Conflict with legacy PWM API
pwm: pwm-mxs: add pinctrl support
pwm: pwm-mxs: use devm_* managed functions
pwm: pwm-mxs: use global reset function stmp_reset_block
pwm: pwm-mxs: encode soc name in compatible string
pwm: Take over maintainership of the PWM subsystem
...
This patch adds support for DMA_ATTR_SKIP_CPU_SYNC attribute for
dma_(un)map_(single,page,sg) functions family. It lets dma mapping clients
to create a mapping for the buffer for the given device without performing
a CPU cache synchronization. CPU cache synchronization can be skipped for
the buffers which it is known that they are already in 'device' domain (CPU
caches have been already synchronized or there are only coherent mappings
for the buffer). For advanced users only, please use it with care.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
This patch adds DMA_ATTR_SKIP_CPU_SYNC attribute to the DMA-mapping
subsystem.
By default dma_map_{single,page,sg} functions family transfer a given
buffer from CPU domain to device domain. Some advanced use cases might
require sharing a buffer between more than one device. This requires
having a mapping created separately for each device and is usually
performed by calling dma_map_{single,page,sg} function more than once
for the given buffer with device pointer to each device taking part in
the buffer sharing. The first call transfers a buffer from 'CPU' domain
to 'device' domain, what synchronizes CPU caches for the given region
(usually it means that the cache has been flushed or invalidated
depending on the dma direction). However, next calls to
dma_map_{single,page,sg}() for other devices will perform exactly the
same sychronization operation on the CPU cache. CPU cache sychronization
might be a time consuming operation, especially if the buffers are
large, so it is highly recommended to avoid it if possible.
DMA_ATTR_SKIP_CPU_SYNC allows platform code to skip synchronization of
the CPU cache for the given buffer assuming that it has been already
transferred to 'device' domain. This attribute can be also used for
dma_unmap_{single,page,sg} functions family to force buffer to stay in
device domain after releasing a mapping for it. Use this attribute with
care!
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
This patch adds support for dma_get_sgtable() function which is required
to let drivers to share the buffers allocated by DMA-mapping subsystem.
Generic implementation based on virt_to_page() is not suitable for ARM
dma-mapping subsystem.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
This patch adds dma_get_sgtable() function which is required to let
drivers to share the buffers allocated by DMA-mapping subsystem. Right
now the driver gets a dma address of the allocated buffer and the kernel
virtual mapping for it. If it wants to share it with other device (= map
into its dma address space) it usually hacks around kernel virtual
addresses to get pointers to pages or assumes that both devices share
the DMA address space. Both solutions are just hacks for the special
cases, which should be avoided in the final version of buffer sharing.
To solve this issue in a generic way, a new call to DMA mapping has been
introduced - dma_get_sgtable(). It allocates a scatter-list which
describes the allocated buffer and lets the driver(s) to use it with
other device(s) by calling dma_map_sg() on it.
This patch provides a generic implementation based on virt_to_page()
call. Architectures which require more sophisticated translation might
provide their own get_sgtable() methods.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This patch adds support for DMA_ATTR_NO_KERNEL_MAPPING attribute for
IOMMU allocations, what let drivers to save precious kernel virtual
address space for large buffers that are intended to be accessed only
from userspace.
This patch is heavily based on initial work kindly provided by Abhinav
Kochhar <abhinav.k@samsung.com>.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
This patch adds DMA_ATTR_NO_KERNEL_MAPPING attribute which lets the
platform to avoid creating a kernel virtual mapping for the allocated
buffer. On some architectures creating such mapping is non-trivial task
and consumes very limited resources (like kernel virtual address space
or dma consistent address space). Buffers allocated with this attribute
can be only passed to user space by calling dma_mmap_attrs().
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Commit 9adc5374 ('common: dma-mapping: introduce mmap method') added a
generic method for implementing mmap user call to dma_map_ops structure.
This patch converts ARM and PowerPC architectures (the only providers of
dma_mmap_coherent/dma_mmap_writecombine calls) to use this generic
dma_map_ops based call and adds a generic cross architecture
definition for dma_mmap_attrs, dma_mmap_coherent, dma_mmap_writecombine
functions.
The generic mmap virt_to_page-based fallback implementation is provided for
architectures which don't provide their own implementation for mmap method.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
This patch fixes incorrect check in error path. When the allocation of
first page fails, the kernel ops appears due to accessing -1 element of
the pages array.
Reported-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Add some sanity checks and forbid mmaping of buffers into vma areas larger
than allocated dma buffer.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
This patch changes dma-mapping subsystem to use generic vmalloc areas
for all consistent dma allocations. This increases the total size limit
of the consistent allocations and removes platform hacks and a lot of
duplicated code.
Atomic allocations are served from special pool preallocated on boot,
because vmalloc areas cannot be reliably created in atomic context.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
'const void *' is a safer type for caller function type. This patch
updates all references to caller function type.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
This patch adds a new constructor for an sg table. The table is constructed
from an array of struct pages. All contiguous chunks of the pages are merged
into a single sg nodes. A user may provide an offset and a size of a buffer if
the buffer is not page-aligned.
The function is dedicated for DMABUF exporters which often perform conversion
from an page array to a scatterlist. Moreover the scatterlist should be
squashed in order to save memory and to speed-up the process of DMA mapping
using dma_map_sg.
The code is based on the patch 'v4l: vb2-dma-contig: add support for
scatterlist in userptr mode' and hints from Laurent Pinchart.
Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: Andrew Morton <akpm@linux-foundation.org>
The label oops is used in CONFIG_DEBUG_VM ifdef block and is defined
outside ifdef CONFIG_DEBUG_VM block. This results in the following
build warning when built with CONFIG_DEBUG_VM disabled. Fix to move
label oops definition to inside a CONFIG_DEBUG_VM block.
mm/slab_common.c: In function ‘kmem_cache_create’:
mm/slab_common.c:101:1: warning: label ‘oops’ defined but not used
[-Wunused-label]
Signed-off-by: Shuah Khan <shuah.khan@hp.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Sasikantha babu