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2012-05-12sparc32: Restore SMP build and rectify sun4m NMI when non-SMP.David S. Miller2-50/+30
The non-SMP sun4m NMI handler was still accessing SUN4C registers. Fix that and share the sun4m NMI trap code between SMP and non-SMP cases. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: Kill asm/vac-ops.hDavid S. Miller4-130/+0
All sun4/sun4c stuff and unused. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: Stop warning about sun4/sun4c in SMP Kconfig option.David S. Miller1-1/+1
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: Remove sun4c floppy assembler.David S. Miller1-10/+1
There were two blocks of code for the two ways to twiddle the terminal count pin in the AUXIO register, one for sun4c and one for sun4m. Kill the former. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: Put back SPARC_BRANCH.David S. Miller1-0/+7
It's needed for the floppy interrupt trap table patching. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: Kill SUN4C_LOCK_{VADDR,END} and associated comment.David S. Miller1-16/+0
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc: Clear out unused asm/machines.h values.David S. Miller5-43/+4
Remove sun4 and sun4c machine ID values from asm/machines.h Also kill NUM_SUN_MACHINES, use ARRAY_SIZE instead. Kill asm/machines.h include and sun4c checks from asm/floppy_32.h Remove asm/machines.h include from setup_32.c and time_32.c, unused. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROCDavid S. Miller15-143/+97
Use those, instead of doing it all by hand. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: Remove inline strncmp "optimization" for constant counts.David S. Miller3-69/+2
Let the compiler do stuff like this. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: use inline versions of pgprot_noncached, pte_to_pgoff and pgoff_to_pteSam Ravnborg3-28/+14
We no longer have different versions of these so use a few simple static inline functions. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: drop btfixup for alloc_thread_info_node/free_thread_infoSam Ravnborg2-10/+4
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: drop sun4c bits from head_32.SSam Ravnborg1-129/+19
As we no longer support sun4c we can remove all the code to support remapping the kernel in head_32.S. We also try to tell the user that the machine is not support, in case someone try to boot the kernel on a sun4c one day Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: drop test for sun4c in signal_32Sam Ravnborg1-5/+2
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: drop sun4c user stack checking routineSam Ravnborg3-91/+6
With this we no longer do any run-time patchings of traps. So drop the function + macro to support this. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: drop sun4c stack checking routineSam Ravnborg2-50/+1
And drop run-time patching too. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: drop sun4c window overflow stack checking routineSam Ravnborg2-71/+2
Also drop run-time patching for srmmu Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: drop sun4c specific stack validationSam Ravnborg2-58/+3
This allows us to kill run-time patching for this function too Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: delete pgtsun4c.hSam Ravnborg3-182/+2
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: remove all uses of ARCH_SUN4CSam Ravnborg6-61/+8
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: drop sun4c specific ___xchg32 implementationSam Ravnborg1-20/+0
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: remove sun4c trapsSam Ravnborg10-468/+4
We used to runtime patch the trap table for srmmu. With the removal of sun4c support this is no longer required. With the sun4c trap removed we can remove all the referenced trap handling which is sun4c specific. This also allows us to get rid of the nosun4c.c file that contained only dummy functions/data. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: remove calls to sun4c dummy mm inits functionsSam Ravnborg4-39/+0
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12sparc32: drop sun4c supportSam Ravnborg13-2514/+11
Machines with sun4c support are very rare these days, and noone is using them for any practical purposes. The sun4c support has been know broken for quite some time too. So rather than trying to keep it up-to-date, lets get rid of it. This allows us to do some very welcome cleanup of sparc32 support. Updated the former sun4c specifc nmi (which was also used for sun4m UP) to be a generic UP NMI. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-10sparc: fix build fail in mm/init_64.c when NEED_MULTIPLE_NODES is offPaul Gortmaker1-9/+5
Commit 625d693e9784f988371e69c2b41a2172c0be6c11 (linux-next) "sparc64: Convert over to NO_BOOTMEM." causes the following compile failure for sparc64 allnoconfig: arch/sparc/mm/init_64.c:822:16: error: unused variable 'paddr' arch/sparc/mm/init_64.c:1759:7: error: unused variable 'node' arch/sparc/mm/init_64.c:809:12: error: 'memblock_nid_range' defined but not used The paddr decl can easily be shuffled within the ifdef. The memblock_nid_range is just a stub function for when NEED_MULTIPLE_NODES is off, but the only caller is within a NEED_MULTIPLE_NODES enabled section, so we can simply delete it. The unused "node" is slightly more interesting. In the case of "# CONFIG_NEED_MULTIPLE_NODES is not set" we no longer get the definition of: #define NODE_DATA(nid) (node_data[nid]) from arch/sparc/include/asm/mmzone.h - but instead we get: #define NODE_DATA(nid) (&contig_page_data) from include/linux/mmzone.h -- and since the arg is ignored, the thing really is unused. Rather than put in a confusing looking __maybe_unused, simply splitting the declaration from the assignment seemed to me to be the least offensive. Cc: Sam Ravnborg <sam@ravnborg.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-27sparc64: Do not set max_mapnr.David S. Miller1-3/+0
There is no need, since nothing relevant to sparc64 makes use of this value. Noticed by Sam Ravnborg. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-27sparc64: Use node local allocations for IRQ stacks.David S. Miller1-9/+14
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-27sparc64: Convert over to NO_BOOTMEM.David S. Miller2-84/+8
With help from Sam Ravnborg. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linuxDavid S. Miller463-3178/+4779
Conflicts: arch/sparc/kernel/leon_smp.c Merge mainline to get the nobootmem.c bug fix, for the sake of the sparc64 NO_BOOTMEM conversion. Resolve a small include line conflict in leon_smp.c Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-27Merge branch 'stable' of ↵Linus Torvalds3-16/+17
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile Pull arch/tile fixes from Chris Metcalf: "One change fixes a platform-independent bug about environment var handling in the boot command line. The other is a trivial tile-specific bug fix to avoid a link-time warning." * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/tile: fix a couple of functions that should be __init init: fix bug where environment vars can't be passed via boot args
2012-04-27Merge tag 'ib-fixes' of ↵Linus Torvalds2-4/+6
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband Pull infiniband fixes from Roland Dreier: "A few fixes for regressions introduced in 3.4-rc1: - fix memory leak in mlx4 - fix two problems with new MAD response generation code" * tag 'ib-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/mlx4: Fix memory leaks in ib_link_query_port() IB/mad: Don't send response for failed MADs IB/mad: Set 'D' bit in response for unhandled MADs
2012-04-27Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds9-148/+230
Pull [GIT PULL] slave-dmaengine fixes from Vinod Koul. * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine/amba-pl08x : reset phychan_hold on terminate all dma: pl330: fix a couple of compilation warnings dma/ste_dma40: fix erroneous comparison dma/ste_dma40: explicitly include regulator consumer header dma40: Improve the logic of stopping logical chan dmaengine: at_hdmac: remove clear-on-read in atc_dostart() dma: mxs-dma: enable channel in device_issue_pending call dmaengine: imx-dma: dont complete descriptor for cyclic dma
2012-04-27Merge tag 'sound-3.4' of ↵Linus Torvalds6-58/+231
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "A workaround for an ASUS laptop and a few ASoC changes; most of the commits are tagged for stable, too." * tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ASoC: wm8994: Improve sequencing of AIF channel enables ALSA: HDA: Add external mic quirk for Asus Zenbook UX31E ASoC: fsi: update for dmaengine prep_slave_sg fallout. ASoC: core: Fix card RTD count for deferred probe. ASoC: cs42l73: don't use negative array index ASoC: dapm: Ensure power gets managed for line widgets
2012-04-27Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds1-3/+3
Pull a watchdog fix from Wim Van Sebroeck: "It will fix the size when reading or writing to WD Timer port 0x72 in the hpwdt driver." * git://www.linux-watchdog.org/linux-watchdog: hpwdt: Only BYTE reads/writes to WD Timer port 0x72
2012-04-27Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds1-7/+6
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Thomas Gleixner. * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tick: Fix the spurious broadcast timer ticks after resume tick: Ensure that the broadcast device is initialized tick: Fix oneshot broadcast setup really
2012-04-27Merge branch 'akpm' (Andrew's patch-bomb)Linus Torvalds13-48/+80
Merge fixes from Andrew Morton: "13 fixes. The acerhdf patches aren't (really) fixes. But they've been stuck in my tree for up to two years, sent to Matthew multiple times and the developers are unhappy." * emailed from Andrew Morton <akpm@linux-foundation.org>: (13 patches) mm: fix NULL ptr dereference in move_pages mm: fix NULL ptr dereference in migrate_pages revert "proc: clear_refs: do not clear reserved pages" drivers/rtc/rtc-ds1307.c: fix BUG shown with lock debugging enabled arch/arm/mach-ux500/mbox-db5500.c: world-writable sysfs fifo file hugetlbfs: lockdep annotate root inode properly acerhdf: lowered default temp fanon/fanoff values acerhdf: add support for new hardware acerhdf: add support for Aspire 1410 BIOS v1.3314 fs/buffer.c: remove BUG() in possible but rare condition mm: fix up the vmscan stat in vmstat epoll: clear the tfile_check_list on -ELOOP mm/hugetlb: fix warning in alloc_huge_page/dequeue_huge_page_vma
2012-04-26hpwdt: Only BYTE reads/writes to WD Timer port 0x72Mingarelli, Thomas1-3/+3
This patch is to correct the use of the iLO port 0x72 usage. The port 0x72 is a byte size write/read and hpwdt is currently writing a WORD. Signed-off by: Thomas Mingarelli <thomas.mingarelli@hp.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2012-04-26Merge tag 'nfs-for-3.4-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds10-40/+88
Pull NFS client bugfixes from Trond Myklebust: - Fix NFSv4 infinite loops on open(O_TRUNC) - Fix an Oops and an infinite loop in the NFSv4 flock code - Don't register the PipeFS filesystem until it has been set up - Fix an Oops in nfs_try_to_update_request - Don't reuse NFSv4 open owners: fixes a bad sequence id storm. * tag 'nfs-for-3.4-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4: Keep dropped state owners on the LRU list for a while NFSv4: Ensure that we don't drop a state owner more than once NFSv4: Ensure we do not reuse open owner names nfs: Enclose hostname in brackets when needed in nfs_do_root_mount NFS: put open context on error in nfs_flush_multi NFS: put open context on error in nfs_pagein_multi NFSv4: Fix open(O_TRUNC) and ftruncate() error handling NFSv4: Ensure that we check lock exclusive/shared type against open modes NFSv4: Ensure that the LOCK code sets exception->inode NFS: check for req==NULL in nfs_try_to_update_request cleanup SUNRPC: register PipeFS file system after pernet sybsystem
2012-04-26Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds22-97/+144
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from H. Peter Anvin. * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x32, siginfo: Provide proper overrides for x32 siginfo_t asm-generic: Allow overriding clock_t and add attributes to siginfo_t x32: Check __ILP32__ instead of __LP64__ for x32 x86, acpi: Call acpi_enter_sleep_state via an asmlinkage C function from assembler ACPI: Convert wake_sleep_flags to a value instead of function x86, apic: APIC code touches invalid MSR on P5 class machines i387: ptrace breaks the lazy-fpu-restore logic x86/platform: Remove incorrect error message in x86_default_fixup_cpu_id() x86, efi: Add dedicated EFI stub entry point x86/amd: Remove broken links from comment and kernel message x86, microcode: Ensure that module is only loaded on supported AMD CPUs x86, microcode: Fix sysfs warning during module unload on unsupported CPUs
2012-04-26Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86Linus Torvalds2-1/+2
Pull x86 platform driver fixes from Matthew Garrett: "One annoyance fix (make intel_ips stop complaining unnecessarily) and one oops fix (unterminated list in dell-laptop). Both have been in -next for a while with no complaints." * 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: dell-laptop: Terminate quirks list properly intel_ips: Hush the i915 symbols message
2012-04-26mm: fix NULL ptr dereference in move_pagesSasha Levin1-8/+8
Commit 3268c63 ("mm: fix move/migrate_pages() race on task struct") has added an odd construct where 'mm' is checked for being NULL, and if it is, it would get dereferenced anyways by mput()ing it. Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26mm: fix NULL ptr dereference in migrate_pagesSasha Levin1-4/+7
Commit 3268c63 ("mm: fix move/migrate_pages() race on task struct") has added an odd construct where 'mm' is checked for being NULL, and if it is, it would get dereferenced anyways by mput()ing it. This would lead to the following NULL ptr deref and BUG() when calling migrate_pages() with a pid that has no mm struct: [25904.193704] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050 [25904.194235] IP: [<ffffffff810b0de7>] mmput+0x27/0xf0 [25904.194235] PGD 773e6067 PUD 77da0067 PMD 0 [25904.194235] Oops: 0002 [#1] PREEMPT SMP [25904.194235] CPU 2 [25904.194235] Pid: 31608, comm: trinity Tainted: G W 3.4.0-rc2-next-20120412-sasha #69 [25904.194235] RIP: 0010:[<ffffffff810b0de7>] [<ffffffff810b0de7>] mmput+0x27/0xf0 [25904.194235] RSP: 0018:ffff880077d49e08 EFLAGS: 00010202 [25904.194235] RAX: 0000000000000286 RBX: 0000000000000000 RCX: 0000000000000000 [25904.194235] RDX: ffff880075ef8000 RSI: 000000000000023d RDI: 0000000000000286 [25904.194235] RBP: ffff880077d49e18 R08: 0000000000000001 R09: 0000000000000001 [25904.194235] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [25904.194235] R13: 00000000ffffffea R14: ffff880034287740 R15: ffff8800218d3010 [25904.194235] FS: 00007fc8b244c700(0000) GS:ffff880029800000(0000) knlGS:0000000000000000 [25904.194235] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [25904.194235] CR2: 0000000000000050 CR3: 00000000767c6000 CR4: 00000000000406e0 [25904.194235] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [25904.194235] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [25904.194235] Process trinity (pid: 31608, threadinfo ffff880077d48000, task ffff880075ef8000) [25904.194235] Stack: [25904.194235] ffff8800342876c0 0000000000000000 ffff880077d49f78 ffffffff811b8020 [25904.194235] ffffffff811b7d91 ffff880075ef8000 ffff88002256d200 0000000000000000 [25904.194235] 00000000000003ff 0000000000000000 0000000000000000 0000000000000000 [25904.194235] Call Trace: [25904.194235] [<ffffffff811b8020>] sys_migrate_pages+0x340/0x3a0 [25904.194235] [<ffffffff811b7d91>] ? sys_migrate_pages+0xb1/0x3a0 [25904.194235] [<ffffffff8266cbb9>] system_call_fastpath+0x16/0x1b [25904.194235] Code: c9 c3 66 90 55 31 d2 48 89 e5 be 3d 02 00 00 48 83 ec 10 48 89 1c 24 4c 89 64 24 08 48 89 fb 48 c7 c7 cf 0e e1 82 e8 69 18 03 00 <f0> ff 4b 50 0f 94 c0 84 c0 0f 84 aa 00 00 00 48 89 df e8 72 f1 [25904.194235] RIP [<ffffffff810b0de7>] mmput+0x27/0xf0 [25904.194235] RSP <ffff880077d49e08> [25904.194235] CR2: 0000000000000050 [25904.348999] ---[ end trace a307b3ed40206b4b ]--- Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Cc: Christoph Lameter <cl@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26revert "proc: clear_refs: do not clear reserved pages"Will Deacon1-3/+0
Revert commit 85e72aa5384 ("proc: clear_refs: do not clear reserved pages"), which was a quick fix suitable for -stable until ARM had been moved over to the gate_vma mechanism: https://lkml.org/lkml/2012/1/14/55 With commit f9d4861f ("ARM: 7294/1: vectors: use gate_vma for vectors user mapping"), ARM does now use the gate_vma, so the PageReserved check can be removed from the proc code. Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: Nicolas Pitre <nico@linaro.org> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26drivers/rtc/rtc-ds1307.c: fix BUG shown with lock debugging enabledAnatolij Gustschin1-0/+1
Add struct bin_attribute initialization to fix the following bug: rtc-ds1307 3-0068: rtc core: registered ds1307 as rtc0 BUG: key cfb14fcc not in .data! ------------[ cut here ]------------ WARNING: at kernel/lockdep.c:2986 sysfs_add_file_mode+0x84/0xdc() Modules linked in: [<c0018d94>] (unwind_backtrace+0x0/0xf8) from [<c0031f7c>] (warn_slowpath_common+0x4c/0x64) [<c0031f7c>] (warn_slowpath_common+0x4c/0x64) from [<c0031fb0>] (warn_slowpath_null+0x1c/0x24) [<c0031fb0>] (warn_slowpath_null+0x1c/0x24) from [<c012f7ac>] (sysfs_add_file_mode+0x84/0xdc) [<c012f7ac>] (sysfs_add_file_mode+0x84/0xdc) from [<c04b11e4>] (ds1307_probe+0x5e4/0x6ac) [<c04b11e4>] (ds1307_probe+0x5e4/0x6ac) from [<c036e600>] (i2c_device_probe+0xdc/0x108) [<c036e600>] (i2c_device_probe+0xdc/0x108) from [<c02cdf84>] (driver_probe_device+0x90/0x210) [<c02cdf84>] (driver_probe_device+0x90/0x210) from [<c02ce198>] (__driver_attach+0x94/0x98) [<c02ce198>] (__driver_attach+0x94/0x98) from [<c02cc824>] (bus_for_each_dev+0x50/0x7c) [<c02cc824>] (bus_for_each_dev+0x50/0x7c) from [<c02cd780>] (bus_add_driver+0x184/0x244) [<c02cd780>] (bus_add_driver+0x184/0x244) from [<c02ce43c>] (driver_register+0x78/0x12c) [<c02ce43c>] (driver_register+0x78/0x12c) from [<c03701ac>] (i2c_register_driver+0x2c/0xb4) [<c03701ac>] (i2c_register_driver+0x2c/0xb4) from [<c0008798>] (do_one_initcall+0x34/0x178) [<c0008798>] (do_one_initcall+0x34/0x178) from [<c0691860>] (kernel_init+0xdc/0x194) [<c0691860>] (kernel_init+0xdc/0x194) from [<c0013cf0>] (kernel_thread_exit+0x0/0x8) Since commit 6992f5334995af4 ("sysfs: Use one lockdep class per sysfs attribute") this initialization is required. Reported-by: Stefano Babic <sbabic@denx.de> Tested-by: Stefano Babic <sbabic@denx.de> Signed-off-by: Anatolij Gustschin <agust@denx.de> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Stefano Babic <sbabic@denx.de> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26arch/arm/mach-ux500/mbox-db5500.c: world-writable sysfs fifo fileVasiliy Kulikov1-1/+1
Don't allow everybody to use a modem. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26hugetlbfs: lockdep annotate root inode properlyAneesh Kumar K.V1-0/+1
This fixes the below reported false lockdep warning. e096d0c7e2e4 ("lockdep: Add helper function for dir vs file i_mutex annotation") added a similar annotation for every other inode in hugetlbfs but missed the root inode because it was allocated by a separate function. For HugeTLB fs we allow taking i_mutex in mmap. HugeTLB fs doesn't support file write and its file read callback is modified in a05b0855fd ("hugetlbfs: avoid taking i_mutex from hugetlbfs_read()") to not take i_mutex. Hence for HugeTLB fs with regular files we really don't take i_mutex with mmap_sem held. ====================================================== [ INFO: possible circular locking dependency detected ] 3.4.0-rc1+ #322 Not tainted ------------------------------------------------------- bash/1572 is trying to acquire lock: (&mm->mmap_sem){++++++}, at: [<ffffffff810f1618>] might_fault+0x40/0x90 but task is already holding lock: (&sb->s_type->i_mutex_key#12){+.+.+.}, at: [<ffffffff81125f88>] vfs_readdir+0x56/0xa8 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&sb->s_type->i_mutex_key#12){+.+.+.}: [<ffffffff810a09e5>] lock_acquire+0xd5/0xfa [<ffffffff816a2f5e>] __mutex_lock_common+0x48/0x350 [<ffffffff816a3325>] mutex_lock_nested+0x2a/0x31 [<ffffffff811fb8e1>] hugetlbfs_file_mmap+0x7d/0x104 [<ffffffff810f859a>] mmap_region+0x272/0x47d [<ffffffff810f8a39>] do_mmap_pgoff+0x294/0x2ee [<ffffffff810f8b65>] sys_mmap_pgoff+0xd2/0x10e [<ffffffff8103d19e>] sys_mmap+0x1d/0x1f [<ffffffff816a5922>] system_call_fastpath+0x16/0x1b -> #0 (&mm->mmap_sem){++++++}: [<ffffffff810a0256>] __lock_acquire+0xa81/0xd75 [<ffffffff810a09e5>] lock_acquire+0xd5/0xfa [<ffffffff810f1645>] might_fault+0x6d/0x90 [<ffffffff81125d62>] filldir+0x6a/0xc2 [<ffffffff81133a83>] dcache_readdir+0x5c/0x222 [<ffffffff81125fa8>] vfs_readdir+0x76/0xa8 [<ffffffff811260b6>] sys_getdents+0x79/0xc9 [<ffffffff816a5922>] system_call_fastpath+0x16/0x1b other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sb->s_type->i_mutex_key#12); lock(&mm->mmap_sem); lock(&sb->s_type->i_mutex_key#12); lock(&mm->mmap_sem); *** DEADLOCK *** 1 lock held by bash/1572: #0: (&sb->s_type->i_mutex_key#12){+.+.+.}, at: [<ffffffff81125f88>] vfs_readdir+0x56/0xa8 stack backtrace: Pid: 1572, comm: bash Not tainted 3.4.0-rc1+ #322 Call Trace: [<ffffffff81699a3c>] print_circular_bug+0x1f8/0x209 [<ffffffff810a0256>] __lock_acquire+0xa81/0xd75 [<ffffffff810f38aa>] ? handle_pte_fault+0x5ff/0x614 [<ffffffff8109e622>] ? mark_lock+0x2d/0x258 [<ffffffff810f1618>] ? might_fault+0x40/0x90 [<ffffffff810a09e5>] lock_acquire+0xd5/0xfa [<ffffffff810f1618>] ? might_fault+0x40/0x90 [<ffffffff816a3249>] ? __mutex_lock_common+0x333/0x350 [<ffffffff810f1645>] might_fault+0x6d/0x90 [<ffffffff810f1618>] ? might_fault+0x40/0x90 [<ffffffff81125d62>] filldir+0x6a/0xc2 [<ffffffff81133a83>] dcache_readdir+0x5c/0x222 [<ffffffff81125cf8>] ? sys_ioctl+0x74/0x74 [<ffffffff81125cf8>] ? sys_ioctl+0x74/0x74 [<ffffffff81125cf8>] ? sys_ioctl+0x74/0x74 [<ffffffff81125fa8>] vfs_readdir+0x76/0xa8 [<ffffffff811260b6>] sys_getdents+0x79/0xc9 [<ffffffff816a5922>] system_call_fastpath+0x16/0x1b Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Dave Jones <davej@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Josh Boyer <jwboyer@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26acerhdf: lowered default temp fanon/fanoff valuesPeter Feuerer1-2/+2
Due to new supported hardware, of which the actual temperature limits of processor, harddisk and other components are unknown, it feels safer with lower fanon / fanoff settings. It won't change much for most people, already using acerhdf, as they use their own fanon/fanoff variable settings when loading the module. Furthermore seems like kernel and userspace tools have been improved to work more efficient and netbooks don't get so hot anymore. Signed-off-by: Peter Feuerer <peter@piie.net> Acked-by: Borislav Petkov <petkovbb@gmail.com> Cc: Matthew Garrett <mjg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26acerhdf: add support for new hardwarePeter Feuerer1-20/+42
Add support for new hardware: Acer Aspire LT-10Q/531/751/1810/1825, Acer Travelmate 7730, Packard Bell ENBFT/DOTVR46 Signed-off-by: Peter Feuerer <peter@piie.net> Acked-by: Borislav Petkov <petkovbb@gmail.com> Cc: Matthew Garrett <mjg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26acerhdf: add support for Aspire 1410 BIOS v1.3314Clay Carpenter1-0/+1
Add support for Aspire 1410 BIOS v1.3314. Fixes the following error: acerhdf: unknown (unsupported) BIOS version Acer/Aspire 1410/v1.3314, please report, aborting! Signed-off-by: Clay Carpenter <claycarpenter@gmail.com> Signed-off-by: Peter Feuerer <peter@piie.net> Cc: Matthew Garrett <mjg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26fs/buffer.c: remove BUG() in possible but rare conditionGlauber Costa1-1/+0
While stressing the kernel with with failing allocations today, I hit the following chain of events: alloc_page_buffers(): bh = alloc_buffer_head(GFP_NOFS); if (!bh) goto no_grow; <= path taken grow_dev_page(): bh = alloc_page_buffers(page, size, 0); if (!bh) goto failed; <= taken, consequence of the above and then the failed path BUG()s the kernel. The failure is inserted a litte bit artificially, but even then, I see no reason why it should be deemed impossible in a real box. Even though this is not a condition that we expect to see around every time, failed allocations are expected to be handled, and BUG() sounds just too much. As a matter of fact, grow_dev_page() can return NULL just fine in other circumstances, so I propose we just remove it, then. Signed-off-by: Glauber Costa <glommer@parallels.com> Cc: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-26mm: fix up the vmscan stat in vmstatYing Han3-7/+13
The "pgsteal" stat is confusing because it counts both direct reclaim as well as background reclaim. However, we have "kswapd_steal" which also counts background reclaim value. This patch fixes it and also makes it match the existng "pgscan_" stats. Test: pgsteal_kswapd_dma32 447623 pgsteal_kswapd_normal 42272677 pgsteal_kswapd_movable 0 pgsteal_direct_dma32 2801 pgsteal_direct_normal 44353270 pgsteal_direct_movable 0 Signed-off-by: Ying Han <yinghan@google.com> Reviewed-by: Rik van Riel <riel@redhat.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Mel Gorman <mel@csn.ul.ie> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: Hugh Dickins <hughd@google.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Reviewed-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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