- 11 Jan, 2012 40 commits
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Mark Brown authored
Saves a small amount of code and systematically eliminates leaks. Signed-off-by:
Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Mark Brown authored
Saves a small amount of code and systematically eliminates leaks. Signed-off-by:
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Axel Lin authored
The LED id begins from 0. Thus the maximum number of leds should be MC13783_LED_MAX + 1. Signed-off-by:
Axel Lin <axel.lin@gmail.com> Acked-by:
Philippe Retornaz <philippe.retornaz@epfl.ch> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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NeilBrown authored
TI's TCA6507 is the LED driver in the GTA04 Openmoko motherboard. The driver provides full support for brightness levels and hardware blinking. This driver can drive each of 7 outputs as an LED or a GPIO output, and provides hardware-assist blinking. [akpm@linux-foundation.org: fix __mod_i2c_device_table alias] [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
NeilBrown <neilb@suse.de> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Axel Lin authored
Use gpio_request_one() instead of multiple gpiolib calls. This also simplifies error handling a bit. Signed-off-by:
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Axel Lin authored
Use gpio_request_one() instead of multiple gpiolib calls. Signed-off-by:
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Axel Lin authored
Signed-off-by:
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Axel Lin authored
Factor out some boilerplate code for spi driver registration into module_spi_driver. Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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Axel Lin authored
Factor out some boilerplate code for i2c driver registration into module_i2c_driver. Signed-off-by:
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Axel Lin authored
Factor out some boilerplate code for platform driver registration into module_platform_driver. Signed-off-by:
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Mark Brown authored
Should be no functional changes, mainly a reorganisation to support future work. [akpm@linux-foundation.org: fix CONFIG_PM=n build] Signed-off-by:
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Mark Brown authored
Saves some error handling code and eliminates a class of leaks. Signed-off-by:
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Jingoo Han authored
The usage of simple_strtoul() or strict_strtoul() is not preferred. Thus, kstrtoul should be used. This patch also fixes checkpatch error as follows: ERROR: space required after that ',' (ctx:VxV) Signed-off-by:
Jingoo Han <jg1.han@samsung.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Jingoo Han authored
module.h is included twice. Signed-off-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ryan Mallon <rmallon@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
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Donghwa Lee authored
This patch supports regulator power control in the driver. Current ld9040 driver was controlled power on/off sequence by callback function in the board file. But, by doing this, there's no need to register lcd power on/off callback function in the board file. Signed-off-by:
Donghwa Lee <dh09.lee@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Inki Dae <inki.dae@samsung.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by:
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Axel Lin authored
Convert the drivers in drivers/video/backlight/* to use the module_platform_driver() macro which makes the code smaller and a bit simpler. Signed-off-by:
Haojian Zhuang <haojian.zhuang@gmail.com> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> [ep93xx_bl.c] Cc: Mike Rapoport <mike@compulab.co.il> Cc: Richard Purdie <rpurdie@rpsys.net> Acked-by:
Michael Hennerich <michael.hennerich@analog.com> Acked-by:
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Paul Bolle authored
Support for the Avionic Design Xanthos backlight device got added in commit 3b96ea9e ("backlight: Add support for the Avionic Design Xanthos backlight device."). That support depends on ARCH_PXA_ADX. The code that should have provided that Kconfig symbol never got submitted. It has never been possible to even build this driver. Remove it. Signed-off-by:
Paul Bolle <pebolle@tiscali.nl> Acked-by:
Thierry Reding <thierry.reding@avionic-design.de> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Wim Van Sebroeck <wim@iguana.be> Signed-off-by:
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Kyungmin Park authored
As devfreq is merged at mainline. Also update the maintainer entry. Signed-off-by:
Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by:
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Joe Perches authored
commit ca632f55 ("spi: reorganize drivers") renamed the files, update the F: patterns. Signed-off-by:
Joe Perches <joe@perches.com> Acked-by:
Grant Likely <grant.likely@secretlab.ca> Signed-off-by:
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Joe Perches authored
commit 0c6967b5 ("serial:blackfin: rename Blackfin serial driver to bfin_uart.c") renamed the file, update the pattern. Signed-off-by:
Sonic Zhang <sonic.zhang@analog.com> Signed-off-by:
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Joe Perches authored
commit 4860c738 ("staging: Move media drivers to staging/media") moved the files, update the F: patterns. Signed-off-by:
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Joe Perches authored
commit 61cf45d0 ("encrypted-keys: create encrypted-keys directory") moved the files, update the patterns. Signed-off-by:
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Joe Perches authored
commit 1fe003fd ("greth: Move the Aeroflex Gaisler driver") moved the files, update the patterns. Signed-off-by:
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Joe Perches authored
commit a88394cf ("ewrk3/tulip: Move the DEC - Tulip drivers") moved the files, update the patterns. Signed-off-by:
Grant Grundler <grundler@parisc-linux.org> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Tobias Ringstrom <tori@unhappy.mine.nu> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: David Davies <davies@maniac.ultranet.com> Cc: David Miller <davem@davemloft.net> Signed-off-by:
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Joe Perches authored
commit 38576af1 ("mmc: sdhci: make sdhci-of device drivers self registered") moved the files around. Update the patterns. Signed-off-by:
Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by:
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Joe Perches authored
commit 8959e743 ("mfd: Delete ab3550 driver") removed the driver, update the patterns. Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Joe Perches authored
Commit f8fc7298 ("[media] marvell-cam: Move cafe-ccic into its own directory") moved the files, update the pattern. Signed-off-by:
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Joe Perches authored
Commit c103de24 ("gpio: reorganize drivers") renamed the file, update the pattern. Signed-off-by:
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Joe Perches authored
Commit c103de24 ("gpio: reorganize drivers") renamed the files, update the patterns. Signed-off-by:
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Joe Perches authored
Track renames and missing or deleted files. Signed-off-by:
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Ian Campbell authored
I happen to have had a commit to various network drivers since the big renaming/reorg which happened to drivers/net recently. This means that I now appear to be in the top few commit signers (by %age) for many of them so am getting sent all sorts of stuff and people who are involved with the driver are not. e.g. (to pick one at random): $ ./scripts/get_maintainer.pl -f drivers/net/ethernet/nvidia/forcedeth.c "David S. Miller" <davem@davemloft.net> (commit_signer:5/7=71%) Ian Campbell <ian.campbell@citrix.com> (commit_signer:2/7=29%) Eric Dumazet <eric.dumazet@gmail.com> (commit_signer:1/7=14%) Jeff Kirsher <jeffrey.t.kirsher@intel.com> (commit_signer:1/7=14%) Jiri Pirko <jpirko@redhat.com> (commit_signer:1/7=14%) netdev@vger.kernel.org (open list:NETWORKING DRIVERS) linux-kernel@vger.kernel.org (open list) With the following patch the renames are followed and the result appears much more sensible: $ ./scripts/get_maintainer.pl -f drivers/net/ethernet/nvidia/forcedeth.c "David S. Miller" <davem@davemloft.net> (commit_signer:31/34=91%) Joe Perches <joe@perches.com> (commit_signer:11/34=32%) Szymon Janc <szymon@janc.net.pl> (commit_signer:5/34=15%) Jiri Pirko <jpirko@redhat.com> (commit_signer:3/34=9%) Paul <paul.gortmaker@windriver.com> (commit_signer:2/34=6%) netdev@vger.kernel.org (open list:NETWORKING DRIVERS) linux-kernel@vger.kernel.org (open list) Signed-off-by:Ian Campbell <Ian.Campbell@citrix.com> Acked-by:
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Minchan Kim authored
vmap_area->private is void* but we don't use the field for various purpose but use only for vm_struct. So change it to a vm_struct* with naming to improve for readability and type checking. Signed-off-by:
Minchan Kim <minchan@kernel.org> Acked-by:
David Rientjes <rientjes@google.com> Signed-off-by:
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Hillf Danton authored
It is not the tag page but the cursor page that we should process, and it looks a typo. Signed-off-by:
Hillf Danton <dhillf@gmail.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Acked-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by:
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Hugh Dickins authored
Lumpy reclaim does well to stop at a PageAnon when there's no swap, but better is to stop at any PageSwapBacked, which includes shmem/tmpfs too. Signed-off-by:
Hugh Dickins <hughd@google.com> Reviewed-by:
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Wang Sheng-Hui authored
lru_to_page is not used in mm/migrate.c. Signed-off-by:
Wang Sheng-Hui <shhuiw@gmail.com> Acked-by:
Mel Gorman <mgorman@suse.de> Acked-by:
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Hillf Danton authored
If we have to hand back the newly allocated huge page to page allocator, for any reason, the changed counter should be recovered. This affects only s390 at present. Signed-off-by:
Michal Hocko <mhocko@suse.cz> Acked-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Tejun Heo authored
mempool modifies gfp_mask so that the backing allocator doesn't try too hard or trigger warning message when there's pool to fall back on. In addition, for the first try, it removes __GFP_WAIT and IO, so that it doesn't trigger reclaim or wait when allocation can be fulfilled from pool; however, when that allocation fails and pool is empty too, it waits for the pool to be replenished before retrying. Allocation which could have succeeded after a bit of reclaim has to wait on the reserved items and it's not like mempool doesn't retry with __GFP_WAIT and IO. It just does that *after* someone returns an element, pointlessly delaying things. Fix it by retrying immediately if the first round of allocation attempts w/o __GFP_WAIT and IO fails. [akpm@linux-foundation.org: shorten the lock hold time] Signed-off-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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Tejun Heo authored
mempool_destroy() is a thin wrapper around free_pool(). The only thing it adds is BUG_ON(pool->curr_nr != pool->min_nr). The intention seems to be to enforce that all allocated elements are freed; however, the BUG_ON() can't achieve that (it doesn't know anything about objects above min_nr) and incorrect as mempool_resize() is allowed to leave the pool extended but not filled. Furthermore, panicking is way worse than any memory leak and there are better debug tools to track memory leaks. Drop the BUG_ON() from mempool_destory() and as that leaves the function identical to free_pool(), replace it. Signed-off-by:
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Tejun Heo authored
mempool_alloc/free() use undocumented smp_mb()'s. The code is slightly broken and misleading. The lockless part is in mempool_free(). It wants to determine whether the item being freed needs to be returned to the pool or backing allocator without grabbing pool->lock. Two things need to be guaranteed for correct operation. 1. pool->curr_nr + #allocated should never dip below pool->min_nr. 2. Waiters shouldn't be left dangling. For #1, The only necessary condition is that curr_nr visible at free is from after the allocation of the element being freed (details in the comment). For most cases, this is true without any barrier but there can be fringe cases where the allocated pointer is passed to the freeing task without going through memory barriers. To cover this case, wmb is necessary before returning from allocation and rmb is necessary before reading curr_nr. IOW, ALLOCATING TASK FREEING TASK update pool state after alloc; wmb(); pass pointer to freeing task; read pointer; rmb(); read pool state to free; The current code doesn't have wmb after pool update during allocation and may theoretically, on machines where unlock doesn't behave as full wmb, lead to pool depletion and deadlock. smp_wmb() needs to be added after successful allocation from reserved elements and smp_mb() in mempool_free() can be replaced with smp_rmb(). For #2, the waiter needs to add itself to waitqueue and then check the wait condition and the waker needs to update the wait condition and then wake up. Because waitqueue operations always go through full spinlock synchronization, there is no need for extra memory barriers. Furthermore, mempool_alloc() is already holding pool->lock when it decides that it needs to wait. There is no reason to do unlock - add waitqueue - test condition again. It can simply add itself to waitqueue while holding pool->lock and then unlock and sleep. This patch adds smp_wmb() after successful allocation from reserved pool, replaces smp_mb() in mempool_free() with smp_rmb() and extend pool->lock over waitqueue addition. More importantly, it explains what memory barriers do and how the lockless testing is correct. -v2: Oleg pointed out that unlock doesn't imply wmb. Added explicit smp_wmb() after successful allocation from reserved pool and updated comments accordingly. Signed-off-by: -
Wang Sheng-Hui authored
migration_entry_wait() can also be called from hugetlb_fault() now. Remove the incorrect comment. Signed-off-by:
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