Commit Graph

287660 Commits

Author SHA1 Message Date
Linus Torvalds
d9142025f5 arm-soc fixes for 3.3-rc
* A series of OMAP regression fixes for merge window fallout
 * Two patches for Davinci, one removes some misdefined clocks, the other
   is a regression fix for merge window fallout
 * Two patches that makes Broadcom bcmring build again (and removes a
   bunch of unused code in the process)
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

arm-soc fixes for 3.3-rc

* A series of OMAP regression fixes for merge window fallout
* Two patches for Davinci, one removes some misdefined clocks, the other
  is a regression fix for merge window fallout
* Two patches that makes Broadcom bcmring build again (and removes a
  bunch of unused code in the process)

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: bcmring: fix build failure in mach-bcmring/arch.c
  ARM: bcmring: remove unused DMA map code
  ARM: davinci: update mdio bus name
  ARM: OMAP2+: arch/arm/mach-omap2/smartreflex.c: add missing iounmap
  ARM: OMAP2+: arch/arm/mach-omap2/devices.c: introduce missing kfree
  ARM: OMAP: fix MMC2 loopback clock handling
  ARM: OMAP: fix erroneous mmc2 clock change on mmc3 setup
  ARM: OMAP2+: GPMC: fix device size setup
  ARM: OMAP2+: timer: Fix crash due to wrong arg to __omap_dm_timer_read_counter
  ARM: OMAP3: hwmod data: register dss hwmods after dss_core
  ARM: OMAP2/3: PRM: fix missing plat/irqs.h build breakage
  ARM: OMAP2+: io: fix compilation breakage on 2420-only configs
  ARM: OMAP4: hwmod data: Add names for DMIC memory address space
  ARM: OMAP3: hwmod data: add SYSC_HAS_ENAWAKEUP for dispc
  ARM: OMAP2+: hwmod data: split omap2/3 dispc hwmod class
  ARM: davinci: DA850: remove non-existing pll1_sysclk4-7 clocks
  ARM: OMAP2: fix regulator warnings
  ARM: OMAP2: fix omap3 touchbook kconfig warning
  i2c: OMAP: Fix OMAP1 build error
2012-02-04 12:11:40 -08:00
Paul Gortmaker
ca43784daa ARM: bcmring: fix build failure in mach-bcmring/arch.c
Upstream commit d1fce9c115

   "ARM: restart: bcmring: use new restart hook"

breaks building of this platform, since what used to be the
last field of the MACHINE_START/END block didn't have a
trailing comma.  Once another field was added below, we get:

arch/arm/mach-bcmring/arch.c:198: error: request for member 'restart' in something not a structure or union

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Jiandong Zheng <jdzheng@broadcom.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-04 11:38:20 -08:00
JD Zheng
864e5e360e ARM: bcmring: remove unused DMA map code
Remove BCMRING DMA map code which is no longer used.

This also fixes a build error with dma.c introduced by
bfcd2ea6a4.

Signed-off-by: Jiandong Zheng <jdzheng@broadcom.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-04 11:27:13 -08:00
Linus Torvalds
31c150a11c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - add Lenovo Ideapad U455 to 'reset' blacklist
  Input: serio_raw - return proper result when serio_raw_read fails
  Input: document device properties
  Input: twl4030_keypad - fix comment (trivial)
  Input: gpio_keys - fix struct device declared inside parameter list
  Input: evdev - fix variable initialisation
2012-02-04 10:57:42 -08:00
Linus Torvalds
4554c135a0 Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  i.MX SDMA: Fix burstsize settings
  ARM: mach-shmobile: both USB DMAC instances on sh7372 are slave-only
  dma: sh_dma: not all SH DMAC implementations support MEMCPY
  at_hdmac: bugfix for enabling channel irq
  dmaengine: fix missing 'cnt' in ?: in dmatest
2012-02-04 10:54:26 -08:00
Linus Torvalds
82bdc843c2 Merge branch 'akpm'
* akpm:
  mm: compaction: check pfn_valid when entering a new MAX_ORDER_NR_PAGES block during isolation for migration
  readahead: fix pipeline break caused by block plug
  kprobes: fix a memory leak in function pre_handler_kretprobe()
  drivers/tty/vt/vt_ioctl.c: fix KDFONTOP 32bit compatibility layer
  lkdtm: avoid calling lkdtm_do_action() with spinlock held
  mm/filemap_xip.c: fix race condition in xip_file_fault()
  mm/memcontrol.c: fix warning with CONFIG_NUMA=n
  avr32: select generic atomic64_t support
  mm: postpone migrated page mapping reset
  xtensa: fix memscan()
  MAINTAINERS: update lguest F: patterns
  MAINTAINERS: remove staging sections
  MAINTAINERS: remove iMX5 section
  MAINTAINERS: update partitions block F: patterns
2012-02-04 10:51:54 -08:00
Linus Torvalds
71b1b20b8a - Fix a regression in 16-bit Atmel NAND flash which was introduced in 3.1
- Fix breakage with MTD suspend caused by the API rework
  - Fix a problem with resetting the MX28 BCH module
  - A couple of other trivial fixes
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Merge tag 'for-linus-3.3' of git://git.infradead.org/~dwmw2/mtd-3.3

 - Fix a regression in 16-bit Atmel NAND flash which was introduced in 3.1
 - Fix breakage with MTD suspend caused by the API rework
 - Fix a problem with resetting the MX28 BCH module
 - A couple of other trivial fixes

* tag 'for-linus-3.3-20120204' of git://git.infradead.org/~dwmw2/mtd-3.3:
  Revert "mtd: atmel_nand: optimize read/write buffer functions"
  mtd: fix MTD suspend
  jffs2: do not initialize variable unnecessarily
  mtd: gpmi-nand bugfix: reset the BCH module when it is not MX23
  mtd: nand: fix typo in comment
2012-02-04 07:17:47 -08:00
Artem Bityutskiy
500823195d Revert "mtd: atmel_nand: optimize read/write buffer functions"
This reverts commit fb5427508a.

The reason is that it breaks 16 bits NAND flash as it was reported by
Nikolaus Voss and confirmed by Eric Bénard.

Nicolas Ferre <nicolas.ferre@atmel.com> alco confirmed:
"After double checking with designers, I must admit that I misunderstood
the way of optimizing accesses to SMC. 16 bit nand is not so common
those days..."

Reported-by: Nikolaus Voss <n.voss@weinmann.de>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org [3.1+]
2012-02-04 08:04:57 +00:00
Linus Torvalds
d12566674c Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7314/1: kuser: consistently use usr_ret for returning from helpers
  ARM: 7302/1: Add TLB flushing for both entries in a PMD
  ARM: 7303/1: perf: add empty NODE event definitions for Cortex-A5 and Cortex-A15
  ARM: 7308/1: vfp: flush thread hwstate before copying ptrace registers
  ARM: 7307/1: vfp: fix ptrace regset modification race
  ARM: 7306/1: vfp: flush thread hwstate before restoring context from sigframe
  Revert "ARM: 7304/1: ioremap: fix boundary check when reusing static mapping"
2012-02-03 16:57:40 -08:00
Mel Gorman
0bf380bc70 mm: compaction: check pfn_valid when entering a new MAX_ORDER_NR_PAGES block during isolation for migration
When isolating for migration, migration starts at the start of a zone
which is not necessarily pageblock aligned.  Further, it stops isolating
when COMPACT_CLUSTER_MAX pages are isolated so migrate_pfn is generally
not aligned.  This allows isolate_migratepages() to call pfn_to_page() on
an invalid PFN which can result in a crash.  This was originally reported
against a 3.0-based kernel with the following trace in a crash dump.

PID: 9902   TASK: d47aecd0  CPU: 0   COMMAND: "memcg_process_s"
 #0 [d72d3ad0] crash_kexec at c028cfdb
 #1 [d72d3b24] oops_end at c05c5322
 #2 [d72d3b38] __bad_area_nosemaphore at c0227e60
 #3 [d72d3bec] bad_area at c0227fb6
 #4 [d72d3c00] do_page_fault at c05c72ec
 #5 [d72d3c80] error_code (via page_fault) at c05c47a4
    EAX: 00000000  EBX: 000c0000  ECX: 00000001  EDX: 00000807  EBP: 000c0000
    DS:  007b      ESI: 00000001  ES:  007b      EDI: f3000a80  GS:  6f50
    CS:  0060      EIP: c030b15a  ERR: ffffffff  EFLAGS: 00010002
 #6 [d72d3cb4] isolate_migratepages at c030b15a
 #7 [d72d3d14] zone_watermark_ok at c02d26cb
 #8 [d72d3d2c] compact_zone at c030b8de
 #9 [d72d3d68] compact_zone_order at c030bba1
#10 [d72d3db4] try_to_compact_pages at c030bc84
#11 [d72d3ddc] __alloc_pages_direct_compact at c02d61e7
#12 [d72d3e08] __alloc_pages_slowpath at c02d66c7
#13 [d72d3e78] __alloc_pages_nodemask at c02d6a97
#14 [d72d3eb8] alloc_pages_vma at c030a845
#15 [d72d3ed4] do_huge_pmd_anonymous_page at c03178eb
#16 [d72d3f00] handle_mm_fault at c02f36c6
#17 [d72d3f30] do_page_fault at c05c70ed
#18 [d72d3fb0] error_code (via page_fault) at c05c47a4
    EAX: b71ff000  EBX: 00000001  ECX: 00001600  EDX: 00000431
    DS:  007b      ESI: 08048950  ES:  007b      EDI: bfaa3788
    SS:  007b      ESP: bfaa36e0  EBP: bfaa3828  GS:  6f50
    CS:  0073      EIP: 080487c8  ERR: ffffffff  EFLAGS: 00010202

It was also reported by Herbert van den Bergh against 3.1-based kernel
with the following snippet from the console log.

BUG: unable to handle kernel paging request at 01c00008
IP: [<c0522399>] isolate_migratepages+0x119/0x390
*pdpt = 000000002f7ce001 *pde = 0000000000000000

It is expected that it also affects 3.2.x and current mainline.

The problem is that pfn_valid is only called on the first PFN being
checked and that PFN is not necessarily aligned.  Lets say we have a case
like this

H = MAX_ORDER_NR_PAGES boundary
| = pageblock boundary
m = cc->migrate_pfn
f = cc->free_pfn
o = memory hole

H------|------H------|----m-Hoooooo|ooooooH-f----|------H

The migrate_pfn is just below a memory hole and the free scanner is beyond
the hole.  When isolate_migratepages started, it scans from migrate_pfn to
migrate_pfn+pageblock_nr_pages which is now in a memory hole.  It checks
pfn_valid() on the first PFN but then scans into the hole where there are
not necessarily valid struct pages.

This patch ensures that isolate_migratepages calls pfn_valid when
necessary.

Reported-by: Herbert van den Bergh <herbert.van.den.bergh@oracle.com>
Tested-by: Herbert van den Bergh <herbert.van.den.bergh@oracle.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:41 -08:00
Shaohua Li
3deaa7190a readahead: fix pipeline break caused by block plug
Herbert Poetzl reported a performance regression since 2.6.39.  The test
is a simple dd read, but with big block size.  The reason is:

T1: ra (A, A+128k), (A+128k, A+256k)
T2: lock_page for page A, submit the 256k
T3: hit page A+128K, ra (A+256k, A+384). the range isn't submitted
because of plug and there isn't any lock_page till we hit page A+256k
because all pages from A to A+256k is in memory
T4: hit page A+256k, ra (A+384, A+ 512). Because of plug, the range isn't
submitted again.
T5: lock_page A+256k, so (A+256k, A+512k) will be submitted. The task is
waitting for (A+256k, A+512k) finish.

There is no request to disk in T3 and T4, so readahead pipeline breaks.

We really don't need block plug for generic_file_aio_read() for buffered
I/O.  The readahead already has plug and has fine grained control when I/O
should be submitted.  Deleting plug for buffered I/O fixes the regression.

One side effect is plug makes the request size 256k, the size is 128k
without it.  This is because default ra size is 128k and not a reason we
need plug here.

Vivek said:

: We submit some readahead IO to device request queue but because of nested
: plug, queue never gets unplugged.  When read logic reaches a page which is
: not in page cache, it waits for page to be read from the disk
: (lock_page_killable()) and that time we flush the plug list.
:
: So effectively read ahead logic is kind of broken in parts because of
: nested plugging.  Removing top level plug (generic_file_aio_read()) for
: buffered reads, will allow unplugging queue earlier for readahead.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Reported-by: Herbert Poetzl <herbert@13thfloor.at>
Tested-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:41 -08:00
Jiang Liu
55ca6140e9 kprobes: fix a memory leak in function pre_handler_kretprobe()
In function pre_handler_kretprobe(), the allocated kretprobe_instance
object will get leaked if the entry_handler callback returns non-zero.
This may cause all the preallocated kretprobe_instance objects exhausted.

This issue can be reproduced by changing
samples/kprobes/kretprobe_example.c to probe "mutex_unlock".  And the fix
is straightforward: just put the allocated kretprobe_instance object back
onto the free_instances list.

[akpm@linux-foundation.org: use raw_spin_lock/unlock]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Jim Keniston <jkenisto@us.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:41 -08:00
Samuel Thibault
cbcb834605 drivers/tty/vt/vt_ioctl.c: fix KDFONTOP 32bit compatibility layer
KDFONTOP(GET) currently fails with EIO when being run in a 32bit userland
with a 64bit kernel if the font width is not 8.

This is because of the setting of the KD_FONT_FLAG_OLD flag, which makes
con_font_get return EIO in such case.

This flag should *not* be set for KDFONTOP, since it's actually the whole
point of this flag (see comment in con_font_set for instance).

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Arthur Taylor <art@ified.ca>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:41 -08:00
Cong Wang
92618184cb lkdtm: avoid calling lkdtm_do_action() with spinlock held
lkdtm_do_action() may call sleeping functions like kmalloc(), so do not
call it with spin lock held.

Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:41 -08:00
Carsten Otte
99f02ef1f1 mm/filemap_xip.c: fix race condition in xip_file_fault()
Fix a race condition that shows in conjunction with xip_file_fault() when
two threads of the same user process fault on the same memory page.

In this case, the race winner will install the page table entry and the
unlucky loser will cause an oops: xip_file_fault calls vm_insert_pfn (via
vm_insert_mixed) which drops out at this check:

	retval = -EBUSY;
	if (!pte_none(*pte))
		goto out_unlock;

The resulting -EBUSY return value will trigger a BUG_ON() in
xip_file_fault.

This fix simply considers the fault as fixed in this case, because the
race winner has successfully installed the pte.

[akpm@linux-foundation.org: use conventional (and consistent) comment layout]
Reported-by: David Sadler <dsadler@us.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reported-by: Louis Alex Eisner <leisner@cs.ucsd.edu>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:41 -08:00
Andrew Morton
82b3f2a717 mm/memcontrol.c: fix warning with CONFIG_NUMA=n
mm/memcontrol.c: In function 'memcg_check_events':
mm/memcontrol.c:779: warning: unused variable 'do_numainfo'

Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Hiroyuki KAMEZAWA <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:40 -08:00
Fabio Baltieri
31e0017e6f avr32: select generic atomic64_t support
Enable use of the generic atomic64 implementation on AVR32 platforms.
Without this the kernel fails to build as the architecture does not
provide its version.

Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:40 -08:00
Konstantin Khlebnikov
35512ecaef mm: postpone migrated page mapping reset
Postpone resetting page->mapping until the final remove_migration_ptes().
Otherwise the expression PageAnon(migration_entry_to_page(entry)) does not
work.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:40 -08:00
Akinobu Mita
a1b58c237b xtensa: fix memscan()
Defining memscan() as memchr() is wrong, because the return values of
memscan() and memchr() are different when the character is not found.  So
use the generic memscan() implementation to fix this.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:40 -08:00
Joe Perches
070f420b35 MAINTAINERS: update lguest F: patterns
commit 07fe9977b6 ("lguest: move the lguest tool to the tools
directory") moved the files, update the patterns.  Sort F: patterns
alphabetically too.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:40 -08:00
Joe Perches
cdb7232b29 MAINTAINERS: remove staging sections
Two commits moved files from staging to drivers/media/

commit d6ce55de3a ("[media] move cx25821 out of staging")
commit be30497085 ("[media] move tm6000 to drivers/media/video")

Remove the sections.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:40 -08:00
Joe Perches
0960e7d13f MAINTAINERS: remove iMX5 section
commit 784a90c0a7 ("ARM i.MX: Merge i.MX5 support into mach-imx")
merged the files, remove the iMX5 section.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Amit Kucheria <amit.kucheria@canonical.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:40 -08:00
Joe Perches
20d16fef95 MAINTAINERS: update partitions block F: patterns
Commit 9be96f3fd1 ("move fs/partitions to block/") moved the files,
update the patterns.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-03 16:16:40 -08:00
Jan Beulich
a43a5ccdfa xenbus_dev: add missing error check to watch handling
So far only the watch path was checked to be zero terminated, while
the watch token was merely assumed to be.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-02-03 16:07:05 -05:00
Konrad Rzeszutek Wilk
e4de866a83 xen/pci[front|back]: Use %d instead of %1x for displaying PCI devfn.
.. as the rest of the kernel is using that format.

Suggested-by: Марк Коренберг <socketpair@gmail.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-02-03 16:06:57 -05:00
Stefano Stabellini
207d543f47 xen pvhvm: do not remap pirqs onto evtchns if !xen_have_vector_callback
CC: stable@kernel.org #2.6.37 and onwards
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-02-03 16:06:27 -05:00
Konrad Rzeszutek Wilk
41bd956de3 xen/smp: Fix CPU online/offline bug triggering a BUG: scheduling while atomic.
When a user offlines a VCPU and then onlines it, we get:

NMI watchdog disabled (cpu2): hardware events not enabled
BUG: scheduling while atomic: swapper/2/0/0x00000002
Modules linked in: dm_multipath dm_mod xen_evtchn iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi scsi_mod libcrc32c crc32c radeon fbco
 ttm bitblit softcursor drm_kms_helper xen_blkfront xen_netfront xen_fbfront fb_sys_fops sysimgblt sysfillrect syscopyarea xen_kbdfront xenfs [last unloaded:

Pid: 0, comm: swapper/2 Tainted: G           O 3.2.0phase15.1-00003-gd6f7f5b-dirty #4
Call Trace:
 [<ffffffff81070571>] __schedule_bug+0x61/0x70
 [<ffffffff8158eb78>] __schedule+0x798/0x850
 [<ffffffff8158ed6a>] schedule+0x3a/0x50
 [<ffffffff810349be>] cpu_idle+0xbe/0xe0
 [<ffffffff81583599>] cpu_bringup_and_idle+0xe/0x10

The reason for this should be obvious from this call-chain:
cpu_bringup_and_idle:
 \- cpu_bringup
  |   \-[preempt_disable]
  |
  |- cpu_idle
       \- play_dead [assuming the user offlined the VCPU]
       |     \
       |     +- (xen_play_dead)
       |          \- HYPERVISOR_VCPU_off [so VCPU is dead, once user
       |          |                       onlines it starts from here]
       |          \- cpu_bringup [preempt_disable]
       |
       +- preempt_enable_no_reschedule()
       +- schedule()
       \- preempt_enable()

So we have two preempt_disble() and one preempt_enable(). Calling
preempt_enable() after the cpu_bringup() in the xen_play_dead
fixes the imbalance.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-02-03 16:05:42 -05:00
Konrad Rzeszutek Wilk
5b02aa1e6e xen/bootup: During bootup suppress XENBUS: Unable to read cpu state
When the initial domain starts, it prints (depending on the
amount of CPUs) a slew of
XENBUS: Unable to read cpu state
XENBUS: Unable to read cpu state
XENBUS: Unable to read cpu state
XENBUS: Unable to read cpu state

which provide no useful information - as the error is a valid
issue - but not on the initial domain. The reason is that the
XenStore is not accessible at that time (it is after all the
first guest) so the CPU hotplug watch cannot parse "availability/cpu"
attribute.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-02-03 16:05:30 -05:00
Linus Torvalds
7c7ed8ec33 Trivial kmemleak bug-fixes:
- Early logging doesn't stop when kmemleak is off by default.
 - Zero-size scanning areas should be ignored (currently it prints a warning).
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Merge tag 'kmemleak-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux

Trivial kmemleak bug-fixes:

 - Early logging doesn't stop when kmemleak is off by default.
 - Zero-size scanning areas should be ignored (currently it prints a
   warning).

* tag 'kmemleak-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux:
  kmemleak: Disable early logging when kmemleak is off by default
  kmemleak: Only scan non-zero-size areas
2012-02-03 12:41:31 -08:00
Cong Wang
e7c9bba799 tty: fix a build failure on sparc
On sparc, there is a build failure:

drivers/tty/serial/8250/8250.c:48:21: error: suncore.h: No such file or directory
drivers/tty/serial/8250/8250.c:3275: error: implicit declaration of function 'sunserial_register_minors'
drivers/tty/serial/8250/8250.c:3305: error: implicit declaration of function 'sunserial_unregister_minors'

this is due to commit 9bef3d4197
(serial: group all the 8250 related code together) moved these files
into 8250/ subdirectory, but forgot to change the reference
to drivers/tty/serial/suncore.h.

Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-03 11:26:07 -08:00
Milan Kocian
90451e6973 USB: usbserial: add new PID number (0xa951) to the ftdi driver
Signed-off-by: Milan Kocian <milon@wq.cz>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-03 11:22:44 -08:00
Mohammed Shafi Shajakhan
07445f6882 ath9k: Fix kernel panic during driver initilization
all works need to be initialized before ieee80211_register_hw
to prevent mac80211 call backs such as drv_start, drv_config
getting started. otherwise we would queue/cancel works before
initializing them and it leads to kernel panic.
this issue can be recreated with the following script
in Chrome laptops with AR928X cards, with background scan
running (or) Network manager is running

while true
do
sudo modprobe -v ath9k
sleep 3
sudo modprobe -r ath9k
sleep 3
done

	 EIP: [<81040a47>] __cancel_work_timer+0xb8/0xe1 SS:ESP 0068:f6be9d70
	 ---[ end trace 4f86d6139a9900ef ]---
	 Registered led device: ath9k-phy0
	 ieee80211 phy0: Atheros AR9280 Rev:2 mem=0xf88a0000,
	 irq=16
	 Kernel panic - not syncing: Fatal exception
	 Pid: 456, comm: wpa_supplicant Tainted: G      D
	 3.0.13 #1
	Call Trace:
	 [<81379e21>] panic+0x53/0x14a
	 [<81004a30>] oops_end+0x73/0x81
	 [<81004b53>] die+0x4c/0x55
	 [<81002710>] do_trap+0x7c/0x83
	 [<81002855>] ? do_bounds+0x58/0x58
	 [<810028cc>] do_invalid_op+0x77/0x81
	 [<81040a47>] ? __cancel_work_timer+0xb8/0xe1
	 [<810489ec>] ? sched_clock_cpu+0x81/0x11f
	 [<8103f809>] ? wait_on_work+0xe2/0xf7
	 [<8137f807>] error_code+0x67/0x6c
	 [<810300d8>] ? wait_consider_task+0x4ba/0x84c
	 [<81040a47>] ? __cancel_work_timer+0xb8/0xe1
	 [<810380c9>] ? try_to_del_timer_sync+0x5f/0x67
	 [<81040a91>] cancel_work_sync+0xf/0x11
	 [<f88d7b7c>] ath_set_channel+0x62/0x25c [ath9k]
	 [<f88d67d1>] ? ath9k_tx_last_beacon+0x26a/0x85c [ath9k]
	 [<f88d8899>] ath_radio_disable+0x3f1/0x68e [ath9k]
	 [<f90d0edb>] ieee80211_hw_config+0x111/0x116 [mac80211]
	 [<f90dd95c>] __ieee80211_recalc_idle+0x919/0xa37 [mac80211]
	 [<f90dda76>] __ieee80211_recalc_idle+0xa33/0xa37 [mac80211]
	 [<812dbed8>] __dev_open+0x82/0xab

Cc: <stable@vger.kernel.org>
Cc: Gary Morain <gmorain@google.com>
Cc: Paul Stewart <pstew@google.com>
Cc: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Tested-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-03 14:18:02 -05:00
Amitkumar Karwar
b7097eb75f mwifiex: handle association failure case correctly
Currently even if association is failed "iw link" shows some
information about connected BSS and "Tx timeout" error is seen in
dmesg log.

This patch fixes below issues in the code to handle assoc failure
case correctly.
1) "status" variable in mwifiex_wait_queue_complete() is not
correctly updated. Hence driver doesn't inform cfg80211 stack
about association failure.
2) During association network queues are stopped but carrier is
not cleared, which gives Tx timeout error in failure case

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-03 14:17:12 -05:00
John W. Linville
8149415efa ath9k: use WARN_ON_ONCE in ath_rc_get_highest_rix
The device seems to survive the issue, so no need to flood the logs
about it...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-03 14:17:12 -05:00
Greg Kroah-Hartman
8739348391 Few fixes for 3.3-rc3, nothing major. Mostly build fixes
introduced recently.
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Merge tag 'for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus

Few fixes for 3.3-rc3, nothing major. Mostly build fixes
introduced recently.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-03 11:15:23 -08:00
John W. Linville
157ca9eae9 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2012-02-03 14:14:07 -05:00
Linus Torvalds
7f06db34e5 sound fixes for 3.3-rc3
Most of commits are either regression fixes for varioud HD-audio
 codecs or small ASoC fixes.  Also a trivial build fix is included.
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Merge tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

sound fixes for 3.3-rc3

Most of commits are either regression fixes for varioud HD-audio
codecs or small ASoC fixes.  Also a trivial build fix is included.

* tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Disable dynamic-power control for VIA as default
  ALSA: hda - Allow analog low-current mode when dynamic power-control is on
  ALSA: hda - Fix the logic to detect VIA analog low-current mode
  ALSA: hda - Check power-state before changing in patch_via.c
  ALSA: HDA: Fix duplicated output to more than one codec
  ALSA: hda - Fix calling cs_automic twice for Cirrus codecs.
  ALSA: HDA: Remove quirk for Toshiba Qosmio G50
  ALSA: HDA: Fix jack creation for codecs with front and rear Line In
  ALSA: hda - Apply 0x0f-VREF fix to all ASUS laptops with ALC861/660
  ASoC: neo1973_wm8753: remove references to the neo1973-gta01 machine
  ALSA: Add #ifdef CONFIG_PCI guard for snd_pci_quirk_* functions
  ASoC: wm_hubs: fix wrong bits for LINEOUT2 N/P mixer
  ALSA: HDA: Remove quirk for Asus N53Jq
  ASoC: wm_hubs: Enable line out VMID buffer for single ended line outputs
  ASoC: wm5100: Mark register cache as dirty when regulators are disabled
  ASoC: wm8962: Mark register cache as dirty when regulators are disabled
  ASoC: wm8996: Mark register cache as dirty when regulators are disabled
  ASoC: wm5100: Fix microphone configuration
  ASoC: wm5100: Make sure we switch to button reporting mode
2012-02-03 10:06:15 -08:00
Peter Ujfalusi
2bd05db718 mfd: Avoid twl6040-codec PLL reconfiguration when not needed
Do not reconfigure the PLL in case it has been configured already
with the requested parameters.
In case of different PLL configuration do only the needed changes.
This can save considerable amount of time since we can avoid the
defined protocol (with delays) for the PLL configuration.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-02-03 19:03:50 +01:00
Peter Ujfalusi
f8447d6c21 mfd: Store twl6040-codec mclk configuration
Store the last used mclk configuration for the PLL.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-02-03 19:03:44 +01:00
Dan Carpenter
3af336376f IB/srpt: Fix ERR_PTR() vs. NULL checking confusion
transport_init_session() and target_fabric_configfs_init() don't
return NULL pointers, they only return ERR_PTRs or valid pointers.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-02-03 09:07:00 -08:00
Will Deacon
5a97d0ae5b ARM: 7314/1: kuser: consistently use usr_ret for returning from helpers
__kuser_cmpxchg64 has a return path using bx lr to get back to the caller.
This is actually ok since the code in question is predicated on
CONFIG_CPU_32v6K, but for the sake of consistency using the usr_ret
macro is probably better.

Acked-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-03 15:58:46 +00:00
Takashi Iwai
b544d1e0e2 ALSA: hda/realtek - Add missing Bass and CLFE as vmaster slaves
The recent changes in Realtek auto-parser added the new "Bass Speaker"
and "CLFE" mixer elements which should be tracked as vmaster slaves,
too.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=42720

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-02-03 14:04:11 +01:00
Masanari Iida
542a398080 ixgbe: Fix typo in ixgbe_common.h
Correct spelling "packtetbuf_num" to "packetbuf_num" in
drivers/net/ethernet/intel/ixgbe/ixgbe_common.h

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
2012-02-03 03:10:25 -08:00
Mitch A Williams
2a06ed9297 igbvf: change copyright date
Change copyright date to 2012 in the source files.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Robert E Garrett <robertX.e.garrett@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03 03:07:15 -08:00
Greg Rose
5c47a2b621 ixgbevf: Update copyright notices
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Robert E Garrett <robertX.e.garrett@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03 03:07:09 -08:00
Greg Rose
3a2c40336b ixgbevf: Fix mailbox interrupt ack bug
Remove jump to out label that was skipping over code to replace the
ack bit in the mailbox cache variable.  This was causing driver mailbox
routines that poll for the PF to ack a message to time out which would
in turn cause all other mailbox messages to fail.  Also replace the
mailbox cache variable message indication bit when a message is found
so that other functions that choose to poll for a mailbox message from
the PF won't miss it.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Robert E Garrett <robertX.e.garrett@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03 03:05:49 -08:00
Stephen Hemminger
1bba2e81f5 ixgbe: make ethtool strings table const
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03 03:05:43 -08:00
Greg Rose
68d6d4ab9a ixgbe: Add warning when no space left for more MAC filters
Send message to system log when the VF requests another MAC filter
but there is no space left on the device for it.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Robert E Garrett <robertX.e.garrett@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03 03:05:36 -08:00
Don Skidmore
9497182051 ixgbe: update copyright to 2012
New year so bump the copyright date.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03 03:05:30 -08:00
Matthijs Kooijman
3fe89a0c79 drm/radeon: do not continue after error from r600_ib_test
This return statement got dropped while fixing the conflicts introduced
in 7a7e8734ac.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-03 10:15:03 +00:00