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2011-08-10tcp: initialize variable ecn_ok in syncookies pathMike Waychison
Using a gcc 4.4.3, warnings are emitted for a possibly uninitialized use of ecn_ok. This can happen if cookie_check_timestamp() returns due to not having seen a timestamp. Defaulting to ecn off seems like a reasonable thing to do in this case, so initialized ecn_ok to false. Signed-off-by: Mike Waychison <mikew@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-11ASoC: Terminate WM8750 SPI device ID tableMark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
2011-08-11ARM: mmp: Change the way we use timer 0 as clockevent timer.Lennert Buytenhek
Instead of setting up a match interrupt for 'current_time + delta' on ->set_next_event(), program timer 0 to count down from 'delta - 1' and trigger an interrupt when it reaches zero. Signed-off-by: Lennert Buytenhek <buytenh@laptop.org> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2011-08-11ARM: mmp: Switch to using timer 1 as clocksource timer.Lennert Buytenhek
Signed-off-by: Lennert Buytenhek <buytenh@laptop.org> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2011-08-11ARM: mmp: Also start timer 1 on boot.Lennert Buytenhek
Currently, arch-mmp/time.c uses timer 0 both as a clocksource timer and as a clockevent timer, the latter by setting up a comparator interrupt to match on 'current_time + delta'. This is problematic if delta is small enough, as that can lead to 'current_time + delta' already being in the past when comparator setup has finished, leading to the requested event not triggering. As there is also a silicon issue that requires stopping a timer's counter while writing to one of its match registers, we'll switch to using two separate timers -- timer 0 as clockevent timer, which we'll start and stop on every invocation of ->set_next_event(), and timer 1 as clocksource timer, which will be free-running. This first patch enables timer 1 on boot, so that we can use it as clocksource timer. Signed-off-by: Lennert Buytenhek <buytenh@laptop.org> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2011-08-11ARM: pxa168/gplugd: free correct GPIOTanmay Upadhyay
Signed-off-by: Tanmay Upadhyay <tanmay.upadhyay@einfochips.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2011-08-11ARM: pxa168/gplugd: get rid of mfp-gplugd.hTanmay Upadhyay
Move definitions from mfp-gplugd.h to mfp-pxa168.h as they aren't gplugD specific. Signed-off-by: Tanmay Upadhyay <tanmay.upadhyay@einfochips.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2011-08-11ARM: pxa: fix logic error in PJ4 iWMMXt handlingLennert Buytenhek
This got added in: commit ef6c84454f8567d4968c210d7d194fb711ed3739 Author: Haojian Zhuang <haojian.zhuang@marvell.com> Date: Wed Nov 24 11:54:25 2010 +0800 ARM: pxa: add iwmmx support for PJ4 which does: - mrc p15, 0, r2, c15, c1, 0 - orr r2, r2, #0x3 @ enable access to CP0 and CP1 - mcr p15, 0, r2, c15, c1, 0 + @ enable access to CP0 and CP1 + XSC(mrc p15, 0, r2, c15, c1, 0) + XSC(orr r2, r2, #0x3) + XSC(mcr p15, 0, r2, c15, c1, 0) but then later does: - mrc p15, 0, r4, c15, c1, 0 - orr r4, r4, #0x3 @ enable access to CP0 and CP1 - mcr p15, 0, r4, c15, c1, 0 + @ enable access to CP0 and CP1 + XSC(mrc p15, 0, r4, c15, c1, 0) + XSC(orr r4, r4, #0xf) + XSC(mcr p15, 0, r4, c15, c1, 0) Signed-off-by: Lennert Buytenhek <buytenh@laptop.org> Acked-by Haojian <haojian.zhuang@gmail.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2011-08-11ASoC: Add missing break in WM8994 probeMark Brown
This error would have no effect on current silicon revisions, the fall through case has the same behaviour. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
2011-08-10Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm: ARM: drop experimental status for ARM_PATCH_PHYS_VIRT ARM: 7008/1: alignment: Make SIGBUS sent to userspace POSIXly correct ARM: 7007/1: alignment: Prevent ignoring of faults with ARMv6 unaligned access model ARM: 7010/1: mm: fix invalid loop for poison_init_mem ARM: 7005/1: freshen up mm/proc-arm946.S dmaengine: PL08x: Fix trivial build error ARM: Fix build error for SMP=n builds
2011-08-10x86-64: Rework vsyscall emulation and add vsyscall= parameterAndy Lutomirski
There are three choices: vsyscall=native: Vsyscalls are native code that issues the corresponding syscalls. vsyscall=emulate (default): Vsyscalls are emulated by instruction fault traps, tested in the bad_area path. The actual contents of the vsyscall page is the same as the vsyscall=native case except that it's marked NX. This way programs that make assumptions about what the code in the page does will not be confused when they read that code. vsyscall=none: Trying to execute a vsyscall will segfault. Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/8449fb3abf89851fd6b2260972666a6f82542284.1312988155.git.luto@mit.edu Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-10x86-64: Wire up getcpu syscallAndy Lutomirski
getcpu is available as a vdso entry and an emulated vsyscall. Programs that for some reason don't want to use the vdso should still be able to call getcpu without relying on the slow emulated vsyscall. It costs almost nothing to expose it as a real syscall. We also need this for the following patch in vsyscall=native mode. Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/6b19f55bdb06a0c32c2fa6dba9b6f222e1fde999.1312988155.git.luto@mit.edu Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-10x86: Remove unnecessary compile flag tweaks for vsyscall codeAndy Lutomirski
As of commit 98d0ac38ca7b1b7a552c9a2359174ff84decb600 Author: Andy Lutomirski <luto@mit.edu> Date: Thu Jul 14 06:47:22 2011 -0400 x86-64: Move vread_tsc and vread_hpet into the vDSO user code no longer directly calls into code in arch/x86/kernel/, so we don't need compile flag hacks to make it safe. All vdso code is in the vdso directory now. Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/835cd05a4c7740544d09723d6ba48f4406f9826c.1312988155.git.luto@mit.edu Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-10"xfs: fix error handling for synchronous writes" revisitedAjeet Yadav
xfs: fix for hang during synchronous buffer write error If removed storage while synchronous buffer write underway, "xfslogd" hangs. Detailed log http://oss.sgi.com/archives/xfs/2011-07/msg00740.html Related work bfc60177f8ab509bc225becbb58f7e53a0e33e81 "xfs: fix error handling for synchronous writes" Given that xfs_bwrite actually does the shutdown already after waiting for the b_iodone completion and given that we actually found that calling xfs_force_shutdown from inside xfs_buf_iodone_callbacks was a major contributor the problem it better to drop this call. Signed-off-by: Ajeet Yadav <ajeet.yadav.77@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2011-08-10Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Really fix build without CONFIG_PCI powerpc: Fix build without CONFIG_PCI powerpc/4xx: Fix build of PCI code on 405 powerpc/pseries: Simplify vpa deregistration functions powerpc/pseries: Cleanup VPA registration and deregistration errors powerpc/pseries: Fix kexec on recent firmware versions MAINTAINERS: change maintainership of mpc5xxx powerpc: Make KVM_GUEST default to n powerpc/kvm: Fix build errors with older toolchains powerpc: Lack of ibm,io-events not that important! powerpc: Move kdump default base address to half RMO size on 64bit powerpc/perf: Disable pagefaults during callchain stack read ppc: Remove duplicate definition of PV_POWER7 powerpc: pseries: Fix kexec on machines with more than 4TB of RAM powerpc: Jump label misalignment causes oops at boot powerpc: Clean up some panic messages in prom_init powerpc: Fix device tree claim code powerpc: Return the_cpu_ spec from identify_cpu powerpc: mtspr/mtmsr should take an unsigned long
2011-08-10Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6: Ecryptfs: Add mount option to check uid of device being mounted = expect uid eCryptfs: Fix payload_len unitialized variable warning eCryptfs: fix compile error eCryptfs: Return error when lower file pointer is NULL
2011-08-10drivers/net/wireless/wl1251: add missing kfreeJulia Lawall
In each case, the kfree already at the end of the function is also needed in the error case. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @exists@ local idexpression x; statement S,S1; expression E; identifier fl; expression *ptr != NULL; @@ x = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...kfree(x)...+> } when any when != true x == NULL x->fl ...> ( if (x == NULL) S1 | if (...) { ... when != x when forall ( return \(0\|<+...x...+>\|ptr\); | * return ...; ) } ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-10ALSA: snd-usb-caiaq: Correct offset fields of outbound iso_frame_descDaniel Mack
This fixes faulty outbount packets in case the inbound packets received from the hardware are fragmented and contain bogus input iso frames. The bug has been there for ages, but for some strange reasons, it was only triggered by newer machines in 64bit mode. Signed-off-by: Daniel Mack <zonque@gmail.com> Reported-and-tested-by: William Light <wrl@illest.net> Reported-by: Pedro Ribeiro <pedrib@gmail.com> Cc: stable@kernel.org Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-08-10EDAC: Correct Kconfig dependenciesBorislav Petkov
Both AMD and Intel i7 EDAC drivers use MCE features and are thus dependent of this functionality present in the kernel. Express this in Kconfig so that randconfig builds don't break. Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-10mach-sa1100: fix PCI build problemLinus Walleij
The PCI nanoengine driver in the SA1100 machine probably has not been building for some time. It probably dragged hardware.h in implicitly and now it doesn't anymore. After this an SA1100 build selecting all system variants will build successfully. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2011-08-11powerpc: Really fix build without CONFIG_PCIBenjamin Herrenschmidt
Brown paper bag day, previous commit wouldn't work very well with modules enabled. Move the exports into the ifdef. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-08-10net: add Documentation/networking/scaling.txtWillem de Bruijn
Describes RSS, RPS, RFS, accelerated RFS, and XPS. This version incorporates comments by Randy Dunlap and Rick Jones. Besides text cleanup, it adds an explicit "Suggested Configuration" heading to each section. Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-By: Rick Jones <rick.jones2@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-10omap: timer: Set dmtimer used as clocksource in autoreload modeHemant Pedanekar
If CONFIG_OMAP_32K_TIMER is not selected and dmtimer is used as clocksource, the timer stops counting once overflow occurs as it was not set in autoreload mode. This results into timekeeping failure: for example, 'sleep 1' at the shell after the timer counter overflow would hang. This patch sets up autoreload when starting the clocksource timer which fixes the above issue. Signed-off-by: Hemant Pedanekar <hemantp@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-08-10OMAP3: am3517crane: remove NULL board_mux from board fileJohan Hovold
Since 7203f8a48bb63015ebe58a6f2a38aec1cb208b9d (arm: mach-omap2: remove NULL board_mux from board files) NULL board_mux is defined in mux.h. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-08-10arm: mach-omap2: mux: use kstrdup()Thomas Meyer
Use kstrdup rather than duplicating its implementation The semantic patch that makes this output is available in scripts/coccinelle/api/kstrdup.cocci. More information about semantic patching is available at http://coccinelle.lip6.fr/ Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-08-10arch:arm:plat-omap:iovmm: remove unused variable 'va'Maxin John
The pointer "va" returned from "phys_to_virt(pa)" is never used in "sgtable_fill_kmalloc()".So,it is safe to remove this set-but-unused variable. Signed-off-by: Maxin B. John <maxin.john@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-08-10Update Nook Color machine 3284 to common Encore nameOleg Drokin
Machine database already updated: http://www.arm.linux.org.uk/developer/machines/list.php?id=3284 Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-08-10am3505/3517: Various platform defines for UART4Raphaël Assénat
Add missing definitions for the AM3505/3517 UART4 such as DMAs, INTs and base address. Signed-of-by: Raphael Assenat <raph@8d.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-08-10Merge branch 'for_3.1/pm-fixes' of ↵Tony Lindgren
git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into fixes
2011-08-10ALSA: azt3328 - adjust error handling code to include debugging codeJulia Lawall
snd_azf3328_dbgcallenter is called at the very beginning of the function, so it could be useful to call snd_azf3328_dbgcallleave at all exit points. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-08-10ARM: drop experimental status for ARM_PATCH_PHYS_VIRTRussell King
This has now been well tested, and several platforms are now selecting this directly. It's time to drop its experimental status. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-10ALSA: hda - Add CONFIG_SND_HDA_POWER_SAVE to stac_vrefout_set()Wang Shaoyan
In commit 45eebda7, it add new function stac_vrefout_set, but it is only used in code between CONFIG_SND_HDA_POWER_SAVE macro, so add the macro to avoid such warning: sound/pci/hda/patch_sigmatel.c:676:12: warning: 'stac_vrefout_set' defined but not used Signed-off-by: Wang Shaoyan <wangshaoyan.pt@taobao.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-08-10OMAP: hwmod: fix build break on non-OMAP4 multi-OMAP2 buildsPaul Walmsley
Builds for multi-OMAP2 (e.g., OMAP2420 with OMAP2430) with CONFIG_ARCH_OMAP4=n fail with the following errors: arch/arm/mach-omap2/built-in.o: In function `_enable_module': arch/arm/mach-omap2/omap_hwmod.c:701: undefined reference to `omap4_cminst_module_enable' arch/arm/mach-omap2/built-in.o: In function `_disable_module': arch/arm/mach-omap2/omap_hwmod.c:726: undefined reference to `omap4_cminst_module_disable' arch/arm/mach-omap2/built-in.o: In function `_wait_target_disable': arch/arm/mach-omap2/omap_hwmod.c:1179: undefined reference to `omap4_cminst_wait_module_idle' This is probably due to the preprocessor directives in arch/arm/plat-omap/include/plat/cpu.h that convert some cpu_is_omap*() expressions from preprocessor directives into something that is only resolvable during runtime, if multiple OMAP2 build targets are selected. Thanks to Tony Lindgren <tony@atomide.com> for reporting. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-08-10OMAP: Fix linking error in twl-common.c for OMAP2/3/4 only buildsPeter Ujfalusi
Commit b22f954 (OMAP4: Move common twl6030 configuration to twl-common) caused compile failures for code for OMAP arch which is not selected by the config. Fixes issues like: With CONFIG_ARCH_OMAP3=y and CONFIG_ARCH_OMAP4=n, I'm getting this: arch/arm/mach-omap2/built-in.o:(.data+0xf99c): undefined reference to `omap4430_phy_init' arch/arm/mach-omap2/built-in.o:(.data+0xf9a0): undefined reference to `omap4430_phy_exit' arch/arm/mach-omap2/built-in.o:(.data+0xf9a4): undefined reference to `omap4430_phy_power' arch/arm/mach-omap2/built-in.o:(.data+0xf9a8): undefined reference to `omap4430_phy_set_clk' arch/arm/mach-omap2/built-in.o:(.data+0xf9ac): undefined reference to `omap4430_phy_suspend' Fix the problem by moving the code to ifdef sections for omap3 and omap4. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> [tony@atomide.com: updated comments] Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-08-10Merge branch 'perf/core' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
2011-08-10ALSA: usb-audio - Add quirk for BOSS Micro BR-80Kazutomo Yoshii
Signed-off-by: Kazutomo Yoshii <kazutomo.yoshii@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-08-10ASoC: Fix typo in wm8750 spi_idsMark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
2011-08-09net_sched: prio: use qdisc_dequeue_peekedFlorian Westphal
commit 07bd8df5df4369487812bf85a237322ff3569b77 (sch_sfq: fix peek() implementation) changed sfq to use generic peek helper. This makes HFSC complain about a non-work-conserving child qdisc, if prio with sfq child is used within hfsc: hfsc peeks into prio qdisc, which will then peek into sfq. returned skb is stashed in sch->gso_skb. Next, hfsc tries to dequeue from prio, but prio will call sfq dequeue directly, which may return NULL instead of previously peeked-at skb. Have prio call qdisc_dequeue_peeked, so sfq->dequeue() is not called in this case. Cc: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-09Bridge: Always send NETDEV_CHANGEADDR up on br MAC change.Andrei Warkentin
This ensures the neighbor entries associated with the bridge dev are flushed, also invalidating the associated cached L2 headers. This means we br_add_if/br_del_if ports to implement hand-over and not wind up with bridge packets going out with stale MAC. This means we can also change MAC of port device and also not wind up with bridge packets going out with stale MAC. This builds on Stephen Hemminger's patch, also handling the br_del_if case and the port MAC change case. Cc: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Andrei Warkentin <andreiw@motorola.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-09Ecryptfs: Add mount option to check uid of device being mounted = expect uidJohn Johansen
Close a TOCTOU race for mounts done via ecryptfs-mount-private. The mount source (device) can be raced when the ownership test is done in userspace. Provide Ecryptfs a means to force the uid check at mount time. Signed-off-by: John Johansen <john.johansen@canonical.com> Cc: <stable@kernel.org> Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
2011-08-09cap_syslog: don't use WARN_ONCE for CAP_SYS_ADMIN deprecation warningJonathan Nieder
syslog-ng versions before 3.3.0beta1 (2011-05-12) assume that CAP_SYS_ADMIN is sufficient to access syslog, so ever since CAP_SYSLOG was introduced (2010-11-25) they have triggered a warning. Commit ee24aebffb75 ("cap_syslog: accept CAP_SYS_ADMIN for now") improved matters a little by making syslog-ng work again, just keeping the WARN_ONCE(). But still, this is a warning that writes a stack trace we don't care about to syslog, sets a taint flag, and alarms sysadmins when nothing worse has happened than use of an old userspace with a recent kernel. Convert the WARN_ONCE to a printk_once to avoid that while continuing to give userspace developers a hint that this is an unwanted backward-compatibility feature and won't be around forever. Reported-by: Ralf Hildebrandt <ralf.hildebrandt@charite.de> Reported-by: Niels <zorglub_olsen@hotmail.com> Reported-by: Paweł Sikora <pluto@agmk.net> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Liked-by: Gergely Nagy <algernon@madhouse-project.org> Acked-by: Serge Hallyn <serge@hallyn.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-09Revert "memcg: get rid of percpu_charge_mutex lock"Michal Hocko
This reverts commit 8521fc50d433507a7cdc96bec280f9e5888a54cc. The patch incorrectly assumes that using atomic FLUSHING_CACHED_CHARGE bit operations is sufficient but that is not true. Johannes Weiner has reported a crash during parallel memory cgroup removal: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: [<ffffffff81083b70>] css_is_ancestor+0x20/0x70 Oops: 0000 [#1] PREEMPT SMP Pid: 19677, comm: rmdir Tainted: G W 3.0.0-mm1-00188-gf38d32b #35 ECS MCP61M-M3/MCP61M-M3 RIP: 0010:[<ffffffff81083b70>] css_is_ancestor+0x20/0x70 RSP: 0018:ffff880077b09c88 EFLAGS: 00010202 Process rmdir (pid: 19677, threadinfo ffff880077b08000, task ffff8800781bb310) Call Trace: [<ffffffff810feba3>] mem_cgroup_same_or_subtree+0x33/0x40 [<ffffffff810feccf>] drain_all_stock+0x11f/0x170 [<ffffffff81103211>] mem_cgroup_force_empty+0x231/0x6d0 [<ffffffff811036c4>] mem_cgroup_pre_destroy+0x14/0x20 [<ffffffff81080559>] cgroup_rmdir+0xb9/0x500 [<ffffffff81114d26>] vfs_rmdir+0x86/0xe0 [<ffffffff81114e7b>] do_rmdir+0xfb/0x110 [<ffffffff81114ea6>] sys_rmdir+0x16/0x20 [<ffffffff8154d76b>] system_call_fastpath+0x16/0x1b We are crashing because we try to dereference cached memcg when we are checking whether we should wait for draining on the cache. The cache is already cleaned up, though. There is also a theoretical chance that the cached memcg gets freed between we test for the FLUSHING_CACHED_CHARGE and dereference it in mem_cgroup_same_or_subtree: CPU0 CPU1 CPU2 mem=stock->cached stock->cached=NULL clear_bit test_and_set_bit test_bit() ... <preempted> mem_cgroup_destroy use after free The percpu_charge_mutex protected from this race because sync draining is exclusive. It is safer to revert now and come up with a more parallel implementation later. Signed-off-by: Michal Hocko <mhocko@suse.cz> Reported-by: Johannes Weiner <jweiner@redhat.com> Acked-by: Johannes Weiner <jweiner@redhat.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-09xfs: set cursor in xfs_ail_splice() even when AIL was emptyAlex Elder
In xfs_ail_splice(), if a cursor is provided it is updated to point to the last item on the list being spliced into the AIL. But if the AIL was found to be empty, the cursor (if provided) is just initialized instead. There is no reason the empty AIL case needs to be treated any differently. And treating it the same way allows this code to be rearranged a bit, with a somewhat tidier result. Signed-off-by: Alex Elder <aelder@sgi.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2011-08-09ath5k: fix error handling in ath5k_beacon_sendBob Copeland
This cleans up error handling for the beacon in case of dma mapping failure. We need to free the skb when dma mapping fails instead of nulling and leaking the pointer, and we should bail out to avoid giving the hardware the bad descriptor. Finally, we need to perform the null check after trying to update the beacon, or else beacons will never be sent after a single mapping failure. Cc: stable@kernel.org Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-09rt2x00: Add rt2870 device id for Dvico usb keyAnthony Bourguignon
This patch add a device id for the wifi usb keys shiped by DVICO with some of their tvix hardware. Signed-off-by: Anthony Bourguignon <contact+kernel@toniob.net> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-09ath9k: fix a misprint which leads to incorrect calibrationAlex Hacker
This patch addresses an issue with incorrect HW register AR_PHY_TX_IQCAL_CORR_COEFF_B1 definition which leads to incorrect clibration. Cc: stable@kernel.org Signed-off-by: Alex Hacker <hacker@epn.ru> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-09rt2x00: Add new rt73 buffalo USB idIvo van Doorn
Reported-by: Maik-Holger Freudenberg <hhfeuer@gmx.de> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-09rtlwifi: rtl892cu: New USB IDsLarry Finger
This patch fixes several problems in the USB_DEVICE table, including missing IDs, reversed vendor/product codes, and a duplicate ID. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-09ath9k_hw: update PMU to improve ripple issue for AR9485Rajkumar Manoharan
The commit ebefce3d13f8b5a871337ff7c3821ee140c1ea8a failed to set proper PMU value to address ripple issue for AR9485. Cc: stable@kernel.org Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-08-09ath9k_hw: Fix incorrect Tx control power in AR9003 templateRajkumar Manoharan
CTL power data incorrect in ctlPowerData_2G field of ar9300_eeprom. Setting incorrect CTL power in calibration is causing lower tx power. Tx power was reported as 3dBm while operating in channel 6 HT40+/ in channel 11 HT40- due to CTL powers in the calibration is set to zero. Cc: stable@kernel.org Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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