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2012-05-08x86, realmode: Fix always-zero test in reboot_32.SH. Peter Anvin
A test instruction is an "and", and an and with zero is always zero. This would cause us to always take the BIOS path, not the APM path, in case anyone actually cares... Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-17-git-send-email-jarkko.sakkinen@intel.com
2012-05-08x86, realmode: Move trampoline_*.S early in the link orderH. Peter Anvin
Move trampoline_*.S earlier in the link order so it ends up being first in the text segment; since the SIPI vector requires 4K alignment it otherwise ends up padding the .text segment with that much completely unnecessarily. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-16-git-send-email-jarkko.sakkinen@intel.com
2012-05-08x86, realmode: Replace open-coded ljmpw with a macroH. Peter Anvin
We cannot code an ljmpw to the real-mode segment directly, because gas refuses to assemble an ljmp with a symbolic segment. Instead of open-coding it everywhere, define a macro and use it for this case. This is specifically an ljmpw from a 16-bit segment. This is okay, as one should never enter real mode from a 32-bit segment: if one do, the CPU ends up in a bizarre (and useless) mode sometimes called "unreal mode" where segments behave like real mode but the default address and operand sizes is 32 bits. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-15-git-send-email-jarkko.sakkinen@intel.com
2012-05-08x86, realmode: Remove indirect jumps in trampoline_32 and wakeup_asmH. Peter Anvin
Remove indirect jumps in trampoline_32.S and the 32-bit part of wakeup_asm.S. There exist systems which are known to do weird things if an SMI comes in right after a mode switch, and the safest way to deal with it is to always follow with a simple absolute far jump. In the 64-bit code we then to a register indirect near jump; follow that pattern for the 32-bit code. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-14-git-send-email-jarkko.sakkinen@intel.com
2012-05-08x86, realmode: Remove indirect jumps in trampoline_64.SH. Peter Anvin
Remove indirect jumps in trampoline_64.S which are no longer necessary: the realmode code can relocate the absolute jumps correctly from the start. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-13-git-send-email-jarkko.sakkinen@intel.com
2012-05-08x86, realmode: Align .data section in trampoline_32.SH. Peter Anvin
Specify the alignment of the .data section in trampoline_32.S. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-12-git-send-email-jarkko.sakkinen@intel.com
2012-05-08x86, realmode: Move bits to the proper sections in trampoline_64.SH. Peter Anvin
Move various bits to the sections they really belong in in trampoline_64.S. Use GLOBAL() rather than ENTRY() for data objects: ENTRY() should only be used with code and forces alignment to 16 bytes. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-11-git-send-email-jarkko.sakkinen@intel.com
2012-05-08x86, realmode: Add .text64 section, make barrier symbols absoluteH. Peter Anvin
Add a .text64 section. The purpose of this is to keep 16-, 32- and 64-bit code segregated into separate sections, mainly to keep disassembly sane. Move barrier symbols out of sections to avoid the "symbol in empty section" problem in some versions of GNU ld. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-10-git-send-email-jarkko.sakkinen@intel.com
2012-05-08x86, realmode: Allow absolute pa_* symbols in the realmode codeH. Peter Anvin
Allow pa_* symbols to be absolute (outside any section) in the realmode linker script. Some versions of GNU ld are known to be unhappy about symbols defined in a section that is otherwise empty. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-9-git-send-email-jarkko.sakkinen@intel.com
2012-05-08x86, realmode: Set permission for real mode pagesJarkko Sakkinen
Set proper permissions for rodata, text and data, removing the realmode trampoline area as a remaining RWX memory mapping in the kernel. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-8-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-05-08x86, realmode: Move ACPI wakeup to unified realmode codeJarkko Sakkinen
Migrated ACPI wakeup code to the real-mode blob. Code existing in .x86_trampoline can be completely removed. Static descriptor table in wakeup_asm.S is courtesy of H. Peter Anvin. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-7-git-send-email-jarkko.sakkinen@intel.com Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Len Brown <len.brown@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-05-08x86, realmode: Move SMP trampoline to unified realmode codeJarkko Sakkinen
Migrated SMP trampoline code to the real mode blob. SMP trampoline code is not yet removed from .x86_trampoline because it is needed by the wakeup code. [ hpa: always enable compiling startup_32_smp in head_32.S... it is only a few instructions which go into .init on UP builds, and it makes the rest of the code less #ifdef ugly. ] Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-6-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-05-08x86, realmode: Move reboot_32.S to unified realmode codeJarkko Sakkinen
Migrated reboot_32.S from x86_trampoline to the real-mode blob. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-5-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-05-08x86, realmode: Relocator for realmode codeJarkko Sakkinen
Implements relocator for real mode code that is called as part of setup_arch(). Processes segment relocations and linear relocations. Real-mode code is relocated to a free hole below 1 MB. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-4-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-05-08x86, realmode: realmode.bin infrastructureJarkko Sakkinen
Create realmode.bin and realmode.relocs files. Piggy pack them into relocatable object that will be included into .init.data section of the main kernel image. The first file includes binary image of the real-mode code. The latter file includes all relocations. The layout of the binary image is specified in realmode.lds.S. The makefile generates pa_ prefixed symbols for each exported global. These are used in 32-bit code and in realmode header to define symbols that need to be relocated. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-3-git-send-email-jarkko.sakkinen@intel.com Originally-by: H. Peter Anvin <hpa@linux.intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-05-08x86, realmode: 16-bit real-mode code support for relocs toolH. Peter Anvin
A new option is added to the relocs tool called '--realmode'. This option causes the generation of 16-bit segment relocations and 32-bit linear relocations for the real-mode code. When the real-mode code is moved to the low-memory during kernel initialization, these relocation entries can be used to relocate the code properly. In the assembly code 16-bit segment relocations must be relative to the 'real_mode_seg' absolute symbol. Linear relocations must be relative to a symbol prefixed with 'pa_'. 16-bit segment relocation is used to load cs:ip in 16-bit code. Linear relocations are used in the 32-bit code for relocatable data references. They are declared in the linker script of the real-mode code. The relocs tool is moved to scripts/x86-relocs.c so it will be compiled before building the arch/x86 tree. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-2-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-05-06Linux 3.4-rc6v3.4-rc6Linus Torvalds
2012-05-06Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes form Peter Anvin * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: intel_mid_powerbtn: mark irq as IRQF_NO_SUSPEND arch/x86/platform/geode/net5501.c: change active_low to 0 for LED driver x86, relocs: Remove an unused variable asm-generic: Use __BITS_PER_LONG in statfs.h x86/amd: Re-enable CPU topology extensions in case BIOS has disabled it
2012-05-06Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs fixes from Chris Mason: "The big ones here are a memory leak we introduced in rc1, and a scheduling while atomic if the transid on disk doesn't match the transid we expected. This happens for corrupt blocks, or out of date disks. It also fixes up the ioctl definition for our ioctl to resolve logical inode numbers. The __u32 was a merging error and doesn't match what we ship in the progs." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: avoid sleeping in verify_parent_transid while atomic Btrfs: fix crash in scrub repair code when device is missing btrfs: Fix mismatching struct members in ioctl.h Btrfs: fix page leak when allocing extent buffers Btrfs: Add properly locking around add_root_to_dirty_list
2012-05-06x86: fix broken TASK_SIZE for ia32_aoutAl Viro
Setting TIF_IA32 in load_aout_binary() used to be enough; these days TASK_SIZE is controlled by TIF_ADDR32 and that one doesn't get set there. Switch to use of set_personality_ia32()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-06Btrfs: avoid sleeping in verify_parent_transid while atomicChris Mason
verify_parent_transid needs to lock the extent range to make sure no IO is underway, and so it can safely clear the uptodate bits if our checks fail. But, a few callers are using it with spinlocks held. Most of the time, the generation numbers are going to match, and we don't want to switch to a blocking lock just for the error case. This adds an atomic flag to verify_parent_transid, and changes it to return EAGAIN if it needs to block to properly verifiy things. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2012-05-05Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha Pull alpha fixes from Matt Turner: "My alpha tree is back up (after taking quite some time to get my GPG key signed). It contains just some simple fixes." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha: alpha: silence 'const' warning in sys_marvel.c alpha: include module.h to fix modpost on Tsunami alpha: properly define get/set_rtc_time on Marvel/SMP alpha: VGA_HOSE depends on VGA_CONSOLE
2012-05-05TTY: pdc_cons, fix regression in closeJiri Slaby
The test in pdc_console_tty_close '!tty->count' was always wrong because tty->count is decremented after tty->ops->close is called and thus can never be zero. Hence the 'then' branch was never executed and the timer never deleted. This did not matter until commit 5dd5bc40f3b6 ("TTY: pdc_cons, use tty_port"). There we needed to set TTY in tty_port to NULL, but this never happened due to the bug above. So change the test to really trigger at the last close by changing the condition to 'tty->count == 1'. Well, the driver should not touch tty->count at all. It should use tty_port->count and count open count there itself. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Reported-and-tested-by: Mikulas Patocka <mpatocka@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-05Merge tag 'sound-3.4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound sound fixes from Takashi Iwai: "As good as nothing exciting here; just a few trivial fixes for various ASoC stuff." * tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ASoC: omap-pcm: Free dma buffers in case of error. ASoC: s3c2412-i2s: Fix dai registration ASoC: wm8350: Don't use locally allocated codec struct ASoC: tlv312aic23: unbreak resume ASoC: bf5xx-ssm2602: Set DAI format ASoC: core: check of_property_count_strings failure ASoC: dt: sgtl5000.txt: Add description for 'reg' field ASoC: wm_hubs: Make sure we don't disable differential line outputs
2012-05-05Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux Pull an ACPI patch from Len Brown: "It fixes a D3 issue new in 3.4-rc1." By Lin Ming via Len Brown: * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: ACPI: Fix D3hot v D3cold confusion
2012-05-05init: don't try mounting device as nfs root unless type fully matchesSasha Levin
Currently, we'll try mounting any device who's major device number is UNNAMED_MAJOR as NFS root. This would happen for non-NFS devices as well (such as 9p devices) but it wouldn't cause any issues since mounting the device as NFS would fail quickly and the code proceeded to doing the proper mount: [ 101.522716] VFS: Unable to mount root fs via NFS, trying floppy. [ 101.534499] VFS: Mounted root (9p filesystem) on device 0:18. Commit 6829a048102a ("NFS: Retry mounting NFSROOT") introduced retries when mounting NFS root, which means that now we don't immediately fail and instead it takes an additional 90+ seconds until we stop retrying, which has revealed the issue this patch fixes. This meant that it would take an additional 90 seconds to boot when we're not using a device type which gets detected in order before NFS. This patch modifies the NFS type check to require device type to be 'Root_NFS' instead of requiring the device to have an UNNAMED_MAJOR major. This makes boot process cleaner since we now won't go through the NFS mounting code at all when the device isn't an NFS root ("/dev/nfs"). Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-05Merge branch 'fix/asoc' into for-linusTakashi Iwai
2012-05-05Merge branch 'for-3.4' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/lrg/asoc into fix/asoc
2012-05-05Merge tag 'asoc-3.4' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Updates for 3.4 Nothing terribly exciting here, a bunch of small and simple fixes scattered around the place.
2012-05-05ACPI: Fix D3hot v D3cold confusionLin Ming
Before this patch, ACPI_STATE_D3 incorrectly referenced D3hot in some places, but D3cold in other places. After this patch, ACPI_STATE_D3 always means ACPI_STATE_D3_COLD; and all references to D3hot use ACPI_STATE_D3_HOT. ACPI's _PR3 method is used to enter both D3hot and D3cold states. What distinguishes D3hot from D3cold is the presence _PR3 (Power Resources for D3hot) If these resources are all ON, then the state is D3hot. If _PR3 is not present, or all _PR0 resources for the devices are OFF, then the state is D3cold. This patch applies after Linux-3.4-rc1. A future syntax cleanup may remove ACPI_STATE_D3 to emphasize that it always means ACPI_STATE_D3_COLD. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Reviewed-by: Aaron Lu <aaron.lu@amd.com> Signed-off-by: Len Brown <len.brown@intel.com>
2012-05-04hfsplus: Fix potential buffer overflowsGreg Kroah-Hartman
Commit ec81aecb2966 ("hfs: fix a potential buffer overflow") fixed a few potential buffer overflows in the hfs filesystem. But as Timo Warns pointed out, these changes also need to be made on the hfsplus filesystem as well. Reported-by: Timo Warns <warns@pre-sense.de> Acked-by: WANG Cong <amwang@redhat.com> Cc: Alexey Khoroshilov <khoroshilov@ispras.ru> Cc: Miklos Szeredi <mszeredi@suse.cz> Cc: Sage Weil <sage@newdream.net> Cc: Eugene Teo <eteo@redhat.com> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Dave Anderson <anderson@redhat.com> Cc: stable <stable@vger.kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-04Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fix from Thomas Gleixner. * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: rtc: Fix possible null pointer dereference in rtc-mpc5121.c
2012-05-04Merge git://git.samba.org/sfrench/cifs-2.6Linus Torvalds
Pull CIFS fixes from Steve French. * git://git.samba.org/sfrench/cifs-2.6: fs/cifs: fix parsing of dfs referrals cifs: make sure we ignore the credentials= and cred= options [CIFS] Update cifs version to 1.78 cifs - check S_AUTOMOUNT in revalidate cifs: add missing initialization of server->req_lock cifs: don't cap ra_pages at the same level as default_backing_dev_info CIFS: Fix indentation in cifs_show_options
2012-05-04CPU frequency drivers MAINTAINERS updateDave Jones
Remove myself as cpufreq maintainer. x86 driver changes can go through the regular x86/ACPI trees. ARM driver changes through the ARM trees. cpufreq core changes are rare these days, and can just go to lkml/direct. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-04seqlock: add 'raw_seqcount_begin()' functionLinus Torvalds
The normal read_seqcount_begin() function will wait for any current writers to exit their critical region by looping until the sequence count is even. That "wait for sequence count to stabilize" is the right thing to do if the read-locker will just retry the whole operation on contention: no point in doing a potentially expensive reader sequence if we know at the beginning that we'll just end up re-doing it all. HOWEVER. Some users don't actually retry the operation, but instead will abort and do the operation with proper locking. So the sequence count case may be the optimistic quick case, but in the presense of writers you may want to do full locking in order to guarantee forward progress. The prime example of this would be the RCU name lookup. And in that case, you may well be better off without the "retry early", and are in a rush to instead get to the failure handling. Thus this "raw" interface that just returns the sequence number without testing it - it just forces the low bit to zero so that read_seqcount_retry() will always fail such a "active concurrent writer" scenario. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-04Fix __read_seqcount_begin() to use ACCESS_ONCE for sequence value readLinus Torvalds
We really need to use a ACCESS_ONCE() on the sequence value read in __read_seqcount_begin(), because otherwise the compiler might end up reloading the value in between the test and the return of it. As a result, it might end up returning an odd value (which means that a write is in progress). If the reader is then fast enough that that odd value is still the current one when the read_seqcount_retry() is done, we might end up with a "successful" read sequence, even despite the concurrent write being active. In practice this probably never really happens - there just isn't anything else going on around the read of the sequence count, and the common case is that we end up having a read barrier immediately afterwards. So the code sequence in which gcc might decide to reaload from memory is small, and there's no reason to believe it would ever actually do the reload. But if the compiler ever were to decide to do so, it would be incredibly annoying to debug. Let's just make sure. Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-04intel_mid_powerbtn: mark irq as IRQF_NO_SUSPENDYong Wang
So that the power button still wakes up the platform. Signed-off-by: Pierre Tardy <pierre.tardy@intel.com> Link: http://lkml.kernel.org/r/20120504210244.F2EA5A018B@akpm.mtv.corp.google.com Tested-by: Kangkai Yin <kangkai.yin@intel.com> Tested-by: Yong Wang <yong.y.wang@intel.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Matthew Garrett <mjg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2012-05-04arch/x86/platform/geode/net5501.c: change active_low to 0 for LED driverBjarke Istrup Pedersen
It seems that there was an error with the active_low = 1 for the LED, since it should be set to 0 (meaning that active is high, since 0 is false, hence the confusion. The wiki article about it confuses it, since it contradicts itself, regarding what turns on the LED. I have tested 3.4-rc2 on my net5501 with this patch, and it makes the LED behave correctly, where "none" turns it off, and "default-on" turns it on, when echoed onto the trigger "file" in /sys/class/leds. Signed-off-by: Bjarke Istrup Pedersen <gurligebis@gentoo.org> Link: http://lkml.kernel.org/r/20120504210146.62186A018B@akpm.mtv.corp.google.com Cc: Philip Prindeville <philipp@redfish-solutions.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2012-05-04Btrfs: fix crash in scrub repair code when device is missingStefan Behrens
Fix that when scrub tries to repair an I/O or checksum error and one of the devices containing the mirror is missing, it crashes in bio_add_page because the bdev is a NULL pointer for missing devices. Reported-by: Marco L. Crociani <marco.crociani@gmail.com> Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2012-05-04btrfs: Fix mismatching struct members in ioctl.hAlexander Block
Fix the size members of btrfs_ioctl_ino_path_args and btrfs_ioctl_logical_ino_args. The user space btrfs-progs utilities used __u64 and the kernel headers used __u32 before. Signed-off-by: Alexander Block <ablock84@googlemail.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2012-05-04Btrfs: fix page leak when allocing extent buffersJosef Bacik
If we happen to alloc a extent buffer and then alloc a page and notice that page is already attached to an extent buffer, we will only unlock it and free our existing eb. Any pages currently attached to that eb will be properly freed, but we don't do the page_cache_release() on the page where we noticed the other extent buffer which can cause us to leak pages and I hope cause the weird issues we've been seeing in this area. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2012-05-04Btrfs: Add properly locking around add_root_to_dirty_listChris Mason
add_root_to_dirty_list happens once at the very beginning of the transaction, but it is still racey. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2012-05-04Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Some minor fixes from Intel and a radeon fix. I have the nouveau fix for the i2c regression queued for next week, its mostly a revert and seems to work on the system it was originally introduced for thanks to some i2c core changes." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/radeon: clarify and extend wb setup on APUs and NI+ asics drm/i915: enable dip before writing data on gen4 fixing dmi match for hp t5745 and hp st5747 thin client drm/i915: Only enable IPS polling for gen5 drm/i915: Do not read non-existent DPLL registers on PCH hardware
2012-05-04Merge tag 'md-3.4-fixes' of git://neil.brown.name/mdLinus Torvalds
Pull one small fix for md/bitmaps from NeilBrown: "This fixes a regression that was introduced in the merge window." * tag 'md-3.4-fixes' of git://neil.brown.name/md: md/bitmap: fix calculation of 'chunks' - missing shift.
2012-05-04Merge branch 'fix-unmapped-word-at-a-time'Linus Torvalds
Jana Saout confirmed that this fixes the page faults he saw. His problem was triggered by ocfs2 and autofs symlink lookups, where the symlink allocation was at the end of a page. But the deeper reason seems to be the use of Xen-PV, which is what then causes him to have all these unmapped pages, which is what then makes it a problem when the unaligned word-at-a-time code fetches data past the end of a page. * fix-unmapped-word-at-a-time: vfs: make word-at-a-time accesses handle a non-existing page
2012-05-04ASoC: omap-pcm: Free dma buffers in case of error.Oleg Matcovschi
Signed-off-by: Oleg Matcovschi <oleg.matcovschi@ti.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@ti.com>
2012-05-04drm/radeon: clarify and extend wb setup on APUs and NI+ asicsAlex Deucher
Use family rather than DCE check for clarity, also always use wb on APUs, there will never be AGP variants. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-05-04md/bitmap: fix calculation of 'chunks' - missing shift.NeilBrown
commit 61a0d80c "md/bitmap: discard CHUNK_BLOCK_SHIFT macro" replaced CHUNK_BLOCK_RATIO() by the same text that was replacing CHUNK_BLOCK_SHIFT() - which is clearly wrong. The result is that 'chunks' is often too small by 1, which can sometimes result in a crash (not sure how). So use the correct replacement, and get rid of CHUNK_BLOCK_RATIO which is no longe used. Reported-by: Karl Newman <siliconfiend@gmail.com> Tested-by: Karl Newman <siliconfiend@gmail.com> Signed-off-by: NeilBrown <neilb@suse.de>
2012-05-03fs/cifs: fix parsing of dfs referralsStefan Metzmacher
The problem was that the first referral was parsed more than once and so the caller tried the same referrals multiple times. The problem was introduced partly by commit 066ce6899484d9026acd6ba3a8dbbedb33d7ae1b, where 'ref += le16_to_cpu(ref->Size);' got lost, but that was also wrong... Cc: <stable@vger.kernel.org> Signed-off-by: Stefan Metzmacher <metze@samba.org> Tested-by: Björn Jacke <bj@sernet.de> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2012-05-03Merge tag 'mfd-for-linus-3.4-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 Pull second set of MFD fixes from Samuel Ortiz: "This time we only have a one liner fixing an omap-usb build error." * tag 'mfd-for-linus-3.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: mfd: Fix build breakage in omap-usb-host.c
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