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2011-03-24UBIFS: fix assertion warning and refine commentsArtem Bityutskiy
This patch fixes the following UBIFS assertion warning: UBIFS assert failed in do_readpage at 115 (pid 199) [<b00321b8>] (unwind_backtrace+0x0/0xdc) from [<af025118>] (do_readpage+0x108/0x594 [ubifs]) [<af025118>] (do_readpage+0x108/0x594 [ubifs]) from [<af025764>] (ubifs_write_end+0x1c0/0x2e8 [ubifs]) [<af025764>] (ubifs_write_end+0x1c0/0x2e8 [ubifs]) from [<b00a0164>] (generic_file_buffered_write+0x18c/0x270) [<b00a0164>] (generic_file_buffered_write+0x18c/0x270) from [<b00a08d4>] (__generic_file_aio_write+0x478/0x4c0) [<b00a08d4>] (__generic_file_aio_write+0x478/0x4c0) from [<b00a0984>] (generic_file_aio_write+0x68/0xc8) [<b00a0984>] (generic_file_aio_write+0x68/0xc8) from [<af024a78>] (ubifs_aio_write+0x178/0x1d8 [ubifs]) [<af024a78>] (ubifs_aio_write+0x178/0x1d8 [ubifs]) from [<b00d104c>] (do_sync_write+0xb0/0x100) [<b00d104c>] (do_sync_write+0xb0/0x100) from [<b00d1abc>] (vfs_write+0xac/0x154) [<b00d1abc>] (vfs_write+0xac/0x154) from [<b00d1c10>] (sys_write+0x3c/0x68) [<b00d1c10>] (sys_write+0x3c/0x68) from [<b002d9a0>] (ret_fast_syscall+0x0/0x2c) The 'PG_checked' flag is used to indicate that the page does not supposedly exist on the media (e.g., a hole or a page beyond the inode size), so it requires slightly bigger budget, because we have to account the indexing size increase. And this flag basically tells that the budget for this page has to be "new page budget". The "new page budget" is slightly bigger than the "existing page budget". The 'do_readpage()' function has the following assertion which sometimes is hit: 'ubifs_assert(!PageChecked(page))'. Obviously, the meaning of this assertion is: "I should not be asked to read a page which does not exist on the media". However, in 'ubifs_write_begin()' we have a small "trick". Notice, that VFS may write pages which were not read yet, so the page data were not loaded from the media to the page cache yet. If VFS tells that it is going to change only some part of the page, we obviously have to load it from the media. However, if VFS tells that it is going to change whole page, we do not read it from the media for optimization purposes. However, since we do not read it, we do not know if it exists on the media or not (a hole, etc). So we set the 'PG_checked' flag to this page to force bigger budget, just in case. So 'ubifs_write_begin()' sets 'PG_checked'. Then we are in 'ubifs_write_end()'. And VFS tells us: "hey, for some reasons I changed my mind and did not change whole page". Frankly, I do not know why this happens, but I hit this somehow on an ARM platform. And this is extremely rare. So in this case UBIFS does the following: 1. Cancels allocated budget. 2. Loads the page from the media by calling 'do_readpage()'. 3. Asks VFS to repeat the whole write operation from the very beginning (call '->write_begin() again, etc). And the assertion warning is hit at the step 2 - remember we have the 'PG_checked' set for this page, and 'do_readpage()' does not like this. So this patch fixes the problem by adding step 1.5 and cleaning the 'PG_checked' before calling 'do_readpage()'. All in all, this patch does not fix any functionality issue, but it silences UBIFS false positive warning which may happen in very very rare cases. And while on it, this patch also improves a commentary which explains the reasons of setting the 'PG_checked' flag for the page. The old commentary was a bit difficult to understand. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-24UBIFS: kill CONFIG_UBIFS_FS_DEBUG_CHKSArtem Bityutskiy
Simplify UBIFS configuration menu and kill the option to enable self-check compile-time. We do not really need this because we can do this run-time using the module parameters or the corresponding sysfs interfaces. And there is a value in simplifying the kernel configuration menu which becomes increasingly large. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-24UBIFS: use GFP_NOFS properlyArtem Bityutskiy
This patch fixes a brown-paperbag bug which was introduced by me: I used incorrect "GFP_KERNEL | GFP_NOFS" allocation flags to make sure my allocations do not cause write-back. But the correct form is "GFP_NOFS". Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-24UBI: use GFP_NOFS properlyArtem Bityutskiy
This patch fixes a brown-paperbag bug which was introduced by me: I used incorrect "GFP_KERNEL | GFP_NOFS" allocation flags to make sure my allocations do not cause write-back. But the correct form is "GFP_NOFS". Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-23Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: HDA: Realtek: Avoid unnecessary volume control index on Surround/Side ASoC: Support !REGULATOR build for sgtl5000 ALSA: hda - VIA: Fix VT1708 can't build up Headphone control issue ALSA: hda - VIA: Correct stream names for VT1818S ALSA: hda - VIA: Fix codec type for VT1708BCE at the right timing ALSA: hda - VIA: Fix invalid A-A path volume adjust issue ALSA: hda - VIA: Add missing support for VT1718S in A-A path ALSA: hda - VIA: Fix independent headphone no sound issue ALSA: hda - VIA: Fix stereo mixer recording no sound issue ALSA: hda - Set EAPD for Realtek ALC665 ALSA: usb - Remove trailing spaces from USB card name strings sound: read i_size with i_size_read() ASoC: Remove bogus check for register validity in debugfs write ASoC: mini2440: Fix uda134x codec problem.
2011-03-23sys_swapon: fix inode lockingCesar Eduardo Barros
A conflict between 52c50567d8ab ("mm: swap: unlock swapfile inode mutex before closing file on bad swapfiles") and 83ef99befc32 ("sys_swapon: remove did_down variable") caused a double unlock of the inode mutex (once in bad_swap: before the filp_close, once at the end just before returning). The patch which added the extra unlock cleared did_down to avoid unlocking twice, but the other patch removed the did_down variable. To fix, set inode to NULL after the first unlock, since it will be used after that point only for the final unlock. While checking this patch, I found a path which could unlock without locking, in case the same inode was added as a swapfile twice. To fix, move the setting of the inode variable further down, to just before claim_swapfile, which will lock the inode before doing anything else. Cc: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Cc: Eric B Munson <emunson@mgebm.net> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23smp: add missing init.h includeHeiko Carstens
Commit 34db18a054c6 ("smp: move smp setup functions to kernel/smp.c") causes this build error on s390 because of a missing init.h include: CC arch/s390/kernel/asm-offsets.s In file included from /home2/heicarst/linux-2.6/arch/s390/include/asm/spinlock.h:14:0, from include/linux/spinlock.h:87, from include/linux/seqlock.h:29, from include/linux/time.h:8, from include/linux/timex.h:56, from include/linux/sched.h:57, from arch/s390/kernel/asm-offsets.c:10: include/linux/smp.h:117:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'setup_nr_cpu_ids' include/linux/smp.h:118:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'smp_init' Fix it by adding the include statement. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: WANG Cong <amwang@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23Merge branch 'topic/asoc' into for-linusTakashi Iwai
2011-03-23ALSA: HDA: Realtek: Avoid unnecessary volume control index on Surround/SideDavid Henningsson
Similar to commit 7e59e097c09b82760bb0fe08b0fa2b704d76c3f4, this patch avoids unnecessary volume control indices for more Realtek auto-parsers, e g the ALC66x family, on the "Surround" and "Side" controls. These indices cause these volume controls to be ignored by PulseAudio and vmaster and should be removed whenever possible. Cc: stable@kernel.org Reported-by: Jan Losinski <losinski@wh2.tu-dresden.de> Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-03-22Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (66 commits) avr32: at32ap700x: fix typo in DMA master configuration dmaengine/dmatest: Pass timeout via module params dma: let IMX_DMA depend on IMX_HAVE_DMA_V1 instead of an explicit list of SoCs fsldma: make halt behave nicely on all supported controllers fsldma: reduce locking during descriptor cleanup fsldma: support async_tx dependencies and automatic unmapping fsldma: fix controller lockups fsldma: minor codingstyle and consistency fixes fsldma: improve link descriptor debugging fsldma: use channel name in printk output fsldma: move related helper functions near each other dmatest: fix automatic buffer unmap type drivers, pch_dma: Fix warning when CONFIG_PM=n. dmaengine/dw_dmac fix: use readl & writel instead of __raw_readl & __raw_writel avr32: at32ap700x: Specify DMA Flow Controller, Src and Dst msize dw_dmac: Setting Default Burst length for transfers as 16. dw_dmac: Allow src/dst msize & flow controller to be configured at runtime dw_dmac: Changing type of src_master and dest_master to u8. dw_dmac: Pass Channel Priority from platform_data dw_dmac: Pass Channel Allocation Order from platform_data ...
2011-03-22bloat-o-meter: include read-only data section in reportJean Delvare
I'm not sure why the read-only data section is excluded from the report, it seems as relevant as the other data sections (b and d). I've stripped the symbols starting with __mod_ as they can have their names dynamically generated and thus comparison between binaries is not possible. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Andi Kleen <andi@firstfloor.org> Acked-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22zlib: slim down zlib_deflate() workspace when possibleJim Keniston
Instead of always creating a huge (268K) deflate_workspace with the maximum compression parameters (windowBits=15, memLevel=8), allow the caller to obtain a smaller workspace by specifying smaller parameter values. For example, when capturing oops and panic reports to a medium with limited capacity, such as NVRAM, compression may be the only way to capture the whole report. In this case, a small workspace (24K works fine) is a win, whether you allocate the workspace when you need it (i.e., during an oops or panic) or at boot time. I've verified that this patch works with all accepted values of windowBits (positive and negative), memLevel, and compression level. Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: David Miller <davem@davemloft.net> Cc: Chris Mason <chris.mason@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22fs/devpts/inode.c: correctly check d_alloc_name() return code in ↵Andrey Vagin
devpts_pty_new() d_alloc_name return NULL in case error, but we expect errno in devpts_pty_new. Addresses http://bugzilla.openvz.org/show_bug.cgi?id=1758 Signed-off-by: Andrey Vagin <avagin@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22aio: wake all waiters when destroying ctxRoland Dreier
The test program below will hang because io_getevents() uses add_wait_queue_exclusive(), which means the wake_up() in io_destroy() only wakes up one of the threads. Fix this by using wake_up_all() in the aio code paths where we want to make sure no one gets stuck. // t.c -- compile with gcc -lpthread -laio t.c #include <libaio.h> #include <pthread.h> #include <stdio.h> #include <unistd.h> static const int nthr = 2; void *getev(void *ctx) { struct io_event ev; io_getevents(ctx, 1, 1, &ev, NULL); printf("io_getevents returned\n"); return NULL; } int main(int argc, char *argv[]) { io_context_t ctx = 0; pthread_t thread[nthr]; int i; io_setup(1024, &ctx); for (i = 0; i < nthr; ++i) pthread_create(&thread[i], NULL, getev, ctx); sleep(1); io_destroy(ctx); for (i = 0; i < nthr; ++i) pthread_join(thread[i], NULL); return 0; } Signed-off-by: Roland Dreier <roland@purestorage.com> Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22pps: remove unreachable codeAlexander Gordeev
Remove code enabled only when CONFIG_PREEMPT_RT is turned on because it is not used in the vanilla kernel. Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: john stultz <johnstul@us.ibm.com> Cc: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22adfs: add hexadecimal filetype suffix optionStuart Swales
ADFS (FileCore) storage complies with the RISC OS filetype specification (12 bits of file type information is stored in the file load address, rather than using a file extension). The existing driver largely ignores this information and does not present it to the end user. It is desirable that stored filetypes be made visible to the end user to facilitate a precise copy of data and metadata from a hard disc (or image thereof) into a RISC OS emulator (such as RPCEmu) or to a network share which can be accessed by real Acorn systems. This patch implements a per-mount filetype suffix option (use -o ftsuffix=1) to present any filetype as a ,xyz hexadecimal suffix on each file. This type suffix is compatible with that used by RISC OS systems that access network servers using NFS client software and by RPCemu's host filing system. Signed-off-by: Stuart Swales <stuart.swales.croftnuisk@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22adfs: improve timestamp precisionStuart Swales
ADFS (FileCore) storage complies with the RISC OS timestamp specification (40-bit centiseconds since 01 Jan 1900 00:00:00). It is desirable that stored timestamp precision be maintained to facilitate a precise copy of data and metadata from a hard disc (or image thereof) into a RISC OS emulator (such as RPCEmu). This patch implements a full-precision conversion from ADFS to Unix timestamp as the existing driver, for ease of calculation with old 32-bit compilers, uses the common trick of shifting the 40-bits representing centiseconds around into 32-bits representing seconds thereby losing precision. Signed-off-by: Stuart Swales<stuart.swales.croftnuisk@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22adfs: fix E+/F+ dir size > 2048 crashing kernelStuart Swales
Kernel crashes in fs/adfs module when accessing directories with a large number of objects on mounted Acorn ADFS E+/F+ format discs (or images) as the existing code writes off the end of the fixed array of struct buffer_head pointers. Additionally, each directory access that didn't crash would leak a buffer as nr_buffers was not adjusted correctly for E+/F+ discs (was always left as one less than required). The patch fixes this by allocating a dynamically-sized set of struct buffer_head pointers if necessary for the E+/F+ case (many directories still do in fact fit in 2048 bytes) and sets the correct nr_buffers so that all buffers are released. Addresses https://bugzilla.kernel.org/show_bug.cgi?id=26072 Tested by tar'ing the contents of my RISC PC's E+ format 20Gb HDD which contains a number of large directories that previously crashed the kernel. Signed-off-by: Stuart Swales <stuart.swales.croftnuisk@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22Documentation/vm/page-types.c: auto debugfs mount for hwpoison operationChen Gong
page-types.c doesn't supply a way to specify the debugfs path and the original debugfs path is not usual on most machines. This patch supplies a way to auto mount debugfs if needed. This patch is heavily inspired by tools/perf/utils/debugfs.c [akpm@linux-foundation.org: make functions static] [akpm@linux-foundation.org: fix debugfs_mount() signature] Signed-off-by: Chen Gong <gong.chen@linux.intel.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22Documentation/Changes: minor correctionsChristian Kujau
I noticed the 'mcelog' program had no comment and then ended up "fixing" a few more things: * reiserfsck -V does not print "reiserfsprogs" (any more?) * is "udevinfo" still shipped? udevd certainly is * grub2 doesn't have a 'grub' binary * add a "# how to get the mcelog version" comment Signed-off-by: Christian Kujau <lists@nerdbynature.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22Documentation/CodingStyle: flesh out if-else examplesHarry Wei
There is a missing case for "Chapter 3: Placing Braces and Spaces". We often know we should not use braces where a single statement. The first case is: if (condition) action(); Another case is: if (condition) do_this(); else do_that(); However, I can not find a description of the second case. Signed-off-by: Harry Wei <harryxiyou@gmail.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22codafs: fix compile warning when CONFIG_SYSCTL=nRakib Mullick
When CONFIG_SYSCTL=n, we get the following warning: fs/coda/sysctl.c:18: warning: `coda_tabl' defined but not used Fix the warning by making sure coda_table and it's callee function are in the same context. Also clean up the code by removing extra #ifdef. [akpm@linux-foundation.org: remove unneeded stub macros] Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Cc: Jan Harkes <jaharkes@cs.cmu.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22x86: allow CONFIG_ISA_DMA_API to be disabledDavid Rientjes
Not all 64-bit systems require ISA-style DMA, so allow it to be configurable. x86 utilizes the generic ISA DMA allocator from kernel/dma.c, so require it only when CONFIG_ISA_DMA_API is enabled. Disabling CONFIG_ISA_DMA_API is dependent on x86_64 since those machines do not have ISA slots and benefit the most from disabling the option (and on CONFIG_EXPERT as required by H. Peter Anvin). When disabled, this also avoids declaring claim_dma_lock(), release_dma_lock(), request_dma(), and free_dma() since those interfaces will no longer be provided. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22x86: only compile floppy driver if CONFIG_ISA_DMA_API is enabledDavid Rientjes
The generic floppy disk driver utilizies the interface provided by CONFIG_ISA_DMA_API, specifically claim_dma_lock(), release_dma_lock(), request_dma(), and free_dma(). Thus, there's a strict dependency on the config option and the driver should only be loaded if the kernel supports ISA-style DMA. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22x86: only compile 8237A if CONFIG_ISA_DMA_API is enabledDavid Rientjes
8237A utilizes the interface provided by CONFIG_ISA_DMA_API, specifically claim_dma_lock() and release_dma_lock(). Thus, there's a strict dependency on the config option and the module should only be loaded if the kernel supports ISA-style DMA. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22pnp: only assign IORESOURCE_DMA if CONFIG_ISA_DMA_API is enabledDavid Rientjes
IORESOURCE_DMA cannot be assigned without utilizing the interface provided by CONFIG_ISA_DMA_API, specifically request_dma() and free_dma(). Thus, there's a strict dependency on the config option and limits IORESOURCE_DMA only to architectures that support ISA-style DMA. ia64 is not one of those architectures, so pnp_check_dma() no longer needs to be special-cased for that architecture. pnp_assign_resources() will now return -EINVAL if IORESOURCE_DMA is attempted on such a kernel. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22rtc: add real-time clock driver for NVIDIA TegraAndrew Chew
This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22drivers/rtc/rtc-ds1511.c: world-writable sysfs nvram fileVasiliy Kulikov
Don't allow everybogy to write to NVRAM. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Cc: Andy Sharp <andy.sharp@onstor.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22drivers/rtc/rtc-isl1208.c: add alarm supportRyan Mallon
Add alarm/wakeup support to rtc isl1208 driver Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22rtc: convert DS1374 to dev_pm_opsMark Brown
There is a general move to replace bus-specific PM ops with dev_pm_ops in order to facilitate core improvements. Do this conversion for DS1374. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22init: return proper error code in do_mounts_rd()Davidlohr Bueso
In do_mounts_rd() if memory cannot be allocated, return -ENOMEM. Signed-off-by: Davidlohr Bueso <dave@gnu.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22binfmt_elf: quiet GCC-4.6 'set but not used' warning in load_elf_binary()David Daney
With GCC-4.6 we get warnings about things being 'set but not used'. In load_elf_binary() this can happen with reloc_func_desc if ELF_PLAT_INIT is defined, but doesn't use the reloc_func_desc argument. Quiet the warning/error by marking reloc_func_desc as __maybe_unused. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22epoll: fix compiler warning and optimize the non-blocking pathShawn Bohrer
Add a comment to ep_poll(), rename labels a bit clearly, fix a warning of unused variable from gcc and optimize the non-blocking path a little. Hinted-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Davide Libenzi <davidel@xmailserver.org> hannes@cmpxchg.org: : The non-blocking ep_poll path optimization introduced skipping over the : return value setup. : : Initialize it properly, my userspace gets upset by epoll_wait() returning : random things. : : In addition, remove the reinitialization at the fetch_events label, the : return value is garuanteed to be zero when execution reaches there. [hannes@cmpxchg.org: fix initialization] Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Shawn Bohrer <shawn.bohrer@gmail.com> Acked-by: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22epoll: move ready event check into proper inlineDavide Libenzi
Move the event readiness check into a proper inline, and use it uniformly inside ep_poll() code. Events in the ->ovflist are no less ready than the ones in ->rdllist. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Shawn Bohrer <shawn.bohrer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22crc32: add missed brackets in macroKonstantin Khlebnikov
Add brackets around typecasted argument in crc32() macro. Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22checkpatch: warn about memset with swapped argumentsDave Jones
Because the second and third arguments of memset have the same type, it turns out to be really easy to mix them up. This bug comes up time after time, so checkpatch should really be checking for it at patch submission time. Signed-off-by: Dave Jones <davej@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22scripts/checkpatch.pl: reset rpt_cleaners warningsMike Frysinger
If you run checkpatch against multiple patches, and one of them has a whitespace issue which can be helped via a script (rpt_cleaners), you will see the same NOTE over and over for all subsequent patches. It makes it seem like those patches also have whitespace problems when in reality, there's only one or two bad apples. So reset rpt_cleaners back to 0 after we've issued the note so that it only shows up near the patch with the actual problems. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22drivers/mmc/host/omap_hsmmc.c: use resource_size()Chris Ball
Use resource_size(). Signed-off-by: Chris Ball <cjb@laptop.org> Cc: Madhusudhan Chikkature <madhu.cr@ti.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22drivers/mmc/host/omap.c: use resource_size()Chris Ball
Signed-off-by: Chris Ball <cjb@laptop.org> Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com> Cc: Tony Lindgren <tony@atomide.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22sigma-firmware: loader for Analog Devices' SigmaStudioMike Frysinger
Analog Devices' SigmaStudio can produce firmware blobs for devices with these DSPs embedded (like some audio codecs). Allow these device drivers to easily parse and load them. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22kstrto*: converting strings to integers done (hopefully) rightAlexey Dobriyan
1. simple_strto*() do not contain overflow checks and crufty, libc way to indicate failure. 2. strict_strto*() also do not have overflow checks but the name and comments pretend they do. 3. Both families have only "long long" and "long" variants, but users want strtou8() 4. Both "simple" and "strict" prefixes are wrong: Simple doesn't exactly say what's so simple, strict should not exist because conversion should be strict by default. The solution is to use "k" prefix and add convertors for more types. Enter kstrtoull() kstrtoll() kstrtoul() kstrtol() kstrtouint() kstrtoint() kstrtou64() kstrtos64() kstrtou32() kstrtos32() kstrtou16() kstrtos16() kstrtou8() kstrtos8() Include runtime testsuite (somewhat incomplete) as well. strict_strto*() become deprecated, stubbed to kstrto*() and eventually will be removed altogether. Use kstrto*() in code today! Note: on some archs _kstrtoul() and _kstrtol() are left in tree, even if they'll be unused at runtime. This is temporarily solution, because I don't want to hardcode list of archs where these functions aren't needed. Current solution with sizeof() and __alignof__ at least always works. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22MAINTAINERS: add drivers/platform/msm to MSM subsystemKenneth Heitke
Signed-off-by: Kenneth Heitke <kheitke@codeaurora.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22MAINTAINERS: update WINBOND CIR patternJoe Perches
commit 5b2e303f6df ("[media] rc-core: convert winbond-cir") moved the files, update the pattern. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: David Härdeman <david@hardeman.nu> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22MAINTAINERS: uSB SE401 moved to staging, update patternJoe Perches
And set the status to Orphan. Signed-off-by: Joe Perches <joe@perches.com> Cc: Jeroen Vreeken <pe1rxq@amsat.org> Cc: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22MAINTAINERS: update SFI patternJoe Perches
commit 937f961a653 ("x86: Move sfi to platform") moved the files, update the pattern. Signed-off-by: Joe Perches <joe@perches.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22MAINTAINERS: remove SHARP LH7A40X sectionJoe Perches
commit 82e6923e186 ("ARM: lh7a40x: remove unmaintained platform support") removed support, remove it from MAINTAINERS. Signed-off-by: Joe Perches <joe@perches.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22MAINTAINERS: update SCX200 file patternJoe Perches
commit 3b3da9d25ae ("x86: Move scx200 to platform") moved it, convert the pattern too. Signed-off-by: Joe Perches <joe@perches.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22MAINTAINERS: remove unused TIMEKEEPING timekeeping.hJoe Perches
Commit 88606e80da0 ("MAINTAINERS: Update timer related entries") added a file pattern that didn't actually exist. Signed-off-by: Joe Perches <joe@perches.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22MAINTAINERS: remove IEEE1394 entryJoe Perches
commit 66fa12c571d ("ieee1394: remove the old IEEE 1394 driver stack") removed the code, remove the MAINTAINERS entry. Signed-off-by: Joe Perches <joe@perches.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22MAINTAINERS: update media pathJoe Perches
Commit 52b661449ae ("[media] rc: Rename remote controller type to rc_type instead of ir_type") moved it around. Signed-off-by: Joe Perches <joe@perches.com> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Acked-by: Harry Wei <harryxiyou@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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