platform/adaptation/renesas_rcar/renesas_kernel.git
11 years agoqlcnic: Fix typo in logs
Shahed Shaikh [Thu, 18 Apr 2013 08:10:06 +0000 (08:10 +0000)]
qlcnic: Fix typo in logs

o Debug logs were not matching with code functionality.
o Changed dev_info to netdev_err

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: fix TSO race condition
Sritej Velaga [Thu, 18 Apr 2013 08:10:05 +0000 (08:10 +0000)]
qlcnic: fix TSO race condition

When driver receives a packet with gso size > 0 and when TSO is disabled,
it should be transmitted as a TSO packet to prevent Tx timeout and subsequent
firmware reset.

Signed-off-by: Sritej Velaga <sritej.velaga@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: Stop traffic before performing loopback test
Jitendra Kalsaria [Thu, 18 Apr 2013 08:10:04 +0000 (08:10 +0000)]
qlcnic: Stop traffic before performing loopback test

Before conducting loopback test by sending packets, driver should stop transmit
queue and turn off carrier.

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoixgbe: Fix a bug in setting VF VLAN via PF
Greg Rose [Wed, 17 Apr 2013 20:41:35 +0000 (20:41 +0000)]
ixgbe: Fix a bug in setting VF VLAN via PF

The PF driver does not check if the administrator has already set a VF
VLAN via the PF driver before setting the new VLAN.  This results in
the following scenario:

A) Administrator sets VF <n> to VLAN 100
B) Administrator sets VF <x> to VLAN 100
C) Administrator sets VF <n> to VLAN 200
D) The VF <n> driver continues to be able to receive traffic on VLAN
   100 because the VLVFB pool enable bit for that VF was left set
   instead of being cleared as it should be.

This fix ensures that the old VLAN filter for VF <n> is first removed
and the pool bit enable for VF <n> is cleared so that it no longer
receives traffic on VLAN 100.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoigb: Revert support for build_skb in igb
Alexander Duyck [Wed, 17 Apr 2013 20:41:04 +0000 (20:41 +0000)]
igb: Revert support for build_skb in igb

This patch actually reverts:
igb: Support using build_skb in the case that jumbo frames are disabled

The reason for reverting this patch is that it can lead to data corruption.
The following flow was pointed out by Ben Hutchings:

1. skb is forwarded to another device
2. Packet headers are modified and it's put into a queue
3. Second packet is received into the other half of this page
4. Page cannot be reused, so is DMA-unmapped
5. The DMA mapping was non-coherent, so unmap copies or invalidates
cache

The headers added in step 2 get trashed in step 5.

Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge
David S. Miller [Thu, 18 Apr 2013 18:50:38 +0000 (14:50 -0400)]
Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge

Included changes:
- fix MAC address check in case of multiple mesh interfaces

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoregulator: palmas: Fix min_uV for LDO8 tracking mode
Axel Lin [Thu, 18 Apr 2013 16:53:52 +0000 (00:53 +0800)]
regulator: palmas: Fix min_uV for LDO8 tracking mode

When SMPS45 is set to off and LDO8 tracking is enabled, the output voltage can
be set from 0.45 to 1.65 V. Thus set min_uV to be 450000.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: ab8500: Get rid of voltage_shift field from struct ab8500_regulator_info
Axel Lin [Wed, 17 Apr 2013 14:55:45 +0000 (22:55 +0800)]
regulator: ab8500: Get rid of voltage_shift field from struct ab8500_regulator_info

The voltage_shift can be calculated from voltage_mask.
Let's remove voltage_shift fied from struct ab8500_regulator_info, this change
can prevent missing voltage_shift setting issue.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: ab8500: Remove unused voltage_shift field from struct expand_register
Axel Lin [Wed, 17 Apr 2013 14:54:00 +0000 (22:54 +0800)]
regulator: ab8500: Remove unused voltage_shift field from struct expand_register

The voltage_shift field of struct expand_register is not used now, remove it.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: palmas: preserve modes of rails during enable/disable
Laxman Dewangan [Thu, 18 Apr 2013 13:02:48 +0000 (18:32 +0530)]
regulator: palmas: preserve modes of rails during enable/disable

The Palma device like TPS65913 have the mode mask which is also
used for enable/disable the rails. The mode bits are defined as
00: OFF
01: AUTO
10: ECO
11: Forced PWM

and modes are set accordingly as
REGULATOR_MODE_NORMAL: AUTO
REGULATOR_MODE_IDLE: ECO
REGULATOR_MODE_FAST: PWM

Two issue observed:
1. If client calls following sequence:
regulator_enable(),
regulator_set_mode(FAST),
regulator_disable()

and again the regulator_enable() then the mode is reset
to NORMAL inplace of keeping the mode as FAST.

Fixing this by storing the current mode configured by client
and restoring modes when enable() is called after disable().

2. In following sequence, the regulator get enabled:
regulator_disable()
regulator_set_mode(FAST),

Fixing this by updating new mode in register only if it is
enabled.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: palma: add ramp delay support through regulator constraints
Laxman Dewangan [Thu, 18 Apr 2013 13:02:47 +0000 (18:32 +0530)]
regulator: palma: add ramp delay support through regulator constraints

Currently Palma regulator driver support the ramp delay
through rail specific platform data.

As regulator framework support the configuration of ramp
delay through regulator constraint, using the framework
method and removing the platform specific data approach.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoARM: highbank: fix cache flush ordering for cpu hotplug
Rob Herring [Wed, 17 Apr 2013 15:46:52 +0000 (10:46 -0500)]
ARM: highbank: fix cache flush ordering for cpu hotplug

The L1 data cache flush needs to be after highbank_set_cpu_jump call which
pollutes the cache with the l2x0_lock. This causes other cores to deadlock
waiting for the l2x0_lock. Moving the flush of the entire data cache after
highbank_set_cpu_jump fixes the problem. Use flush_cache_louis instead of
flush_cache_all are that is sufficient to flush only the L1 data cache.
flush_cache_louis did not exist when highbank_cpu_die was originally
written.

With PL310 errata 769419 enabled, a wmb is inserted into idle which takes
the l2x0_lock. This makes the problem much more easily hit and causes
reset to hang.

Reported-by: Paolo Pisati <p.pisati@gmail.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
11 years agoRevert "block: add missing block_bio_complete() tracepoint"
Linus Torvalds [Thu, 18 Apr 2013 16:00:26 +0000 (09:00 -0700)]
Revert "block: add missing block_bio_complete() tracepoint"

This reverts commit 3a366e614d0837d9fc23f78cdb1a1186ebc3387f.

Wanlong Gao reports that it causes a kernel panic on his machine several
minutes after boot. Reverting it removes the panic.

Jens says:
 "It's not quite clear why that is yet, so I think we should just revert
  the commit for 3.9 final (which I'm assuming is pretty close).

  The wifi is crap at the LSF hotel, so sending this email instead of
  queueing up a revert and pull request."

Reported-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Requested-by: Jens Axboe <axboe@kernel.dk>
Cc: Tejun Heo <tj@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agox86, hyperv: Handle Xen emulation of Hyper-V more gracefully
K. Y. Srinivasan [Thu, 18 Apr 2013 15:44:46 +0000 (08:44 -0700)]
x86, hyperv: Handle Xen emulation of Hyper-V more gracefully

Install the Hyper-V specific interrupt handler only when needed. This would
permit us to get rid of the Xen check. Note that when the vmbus drivers invokes
the call to register its handler, we are sure to be running on Hyper-V.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Link: http://lkml.kernel.org/r/1366299886-6399-1-git-send-email-kys@microsoft.com
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
11 years agokprobes: Fix a double lock bug of kprobe_mutex
Masami Hiramatsu [Thu, 18 Apr 2013 09:33:18 +0000 (18:33 +0900)]
kprobes: Fix a double lock bug of kprobe_mutex

Fix a double locking bug caused when debug.kprobe-optimization=0.
While the proc_kprobes_optimization_handler locks kprobe_mutex,
wait_for_kprobe_optimizer locks it again and that causes a double lock.
To fix the bug, this introduces different mutex for protecting
sysctl parameter and locks it in proc_kprobes_optimization_handler.
Of course, since we need to lock kprobe_mutex when touching kprobes
resources, that is done in *optimize_all_kprobes().

This bug was introduced by commit ad72b3bea744 ("kprobes: fix
wait_for_kprobe_optimizer()")

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agodmaengine: at_hdmac: fix race condition in atc_advance_work()
Ludovic Desroches [Thu, 18 Apr 2013 07:52:59 +0000 (09:52 +0200)]
dmaengine: at_hdmac: fix race condition in atc_advance_work()

The BUG_ON() directive is triggered probably due to a latency
modification following inclusion of commit c10d73671ad3 ("softirq:
reduce latencies").  This condition has not been met before 3.9-rc1 and
doesn't trigger without this patch.

We now make sure that DMA channel is idle before calling
atc_complete_all() which makes the BUG_ON() "protection" useless.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoregulator: core: Add regulator_map_voltage_ascend() API
Axel Lin [Thu, 18 Apr 2013 02:34:49 +0000 (10:34 +0800)]
regulator: core: Add regulator_map_voltage_ascend() API

A lot of regulator hardware has ascendant voltage list.
This patch adds regulator_map_voltage_ascend() and export it.

Drivers that have ascendant voltage list can use this as their map_voltage()
operation, this is more efficient than default regulator_map_voltage_iterate()
function.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch
David S. Miller [Thu, 18 Apr 2013 04:20:57 +0000 (00:20 -0400)]
Merge branch 'fixes' of git://git./linux/kernel/git/jesse/openvswitch

Jesse Gross says:

====================
Two small bug fixes for net/3.9 including the issue previously
discussed where allocation of netlink notifications can fail after
changes have been committed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Linus Torvalds [Wed, 17 Apr 2013 23:12:43 +0000 (16:12 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux

Pull idle patches from Len Brown:
 "A pair of small patches for 3.9-rc7.

  This CPU-id should have been included in the ones that we updated
  earlier in 3.9.  This pair of patches will allow this flavor of
  Haswell to behave like the other flavors."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: additional Haswell CPU-id
  intel_idle: additional Haswell CPU-id

11 years agoMerge branch 'akpm' (fixes from Andrew)
Linus Torvalds [Wed, 17 Apr 2013 23:11:09 +0000 (16:11 -0700)]
Merge branch 'akpm' (fixes from Andrew)

Pull misc fixes from Andrew Morton:
 "Ten fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  kernel/signal.c: stop info leak via the tkill and the tgkill syscalls
  mm/vmscan: fix error return in kswapd_run()
  hfsplus: fix potential overflow in hfsplus_file_truncate()
  avr32: fix build error in atstk1006_defconfig
  hugetlbfs: add swap entry check in follow_hugetlb_page()
  fs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()
  hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)
  checkpatch: fix stringification macro defect
  drivers/video/mmp/core.c: fix use-after-free bug
  thinkpad-acpi: kill hotkey_thread_mutex

11 years agokernel/signal.c: stop info leak via the tkill and the tgkill syscalls
Emese Revfy [Wed, 17 Apr 2013 22:58:36 +0000 (15:58 -0700)]
kernel/signal.c: stop info leak via the tkill and the tgkill syscalls

This fixes a kernel memory contents leak via the tkill and tgkill syscalls
for compat processes.

This is visible in the siginfo_t->_sifields._rt.si_sigval.sival_ptr field
when handling signals delivered from tkill.

The place of the infoleak:

int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
{
        ...
        put_user_ex(ptr_to_compat(from->si_ptr), &to->si_ptr);
        ...
}

Signed-off-by: Emese Revfy <re.emese@gmail.com>
Reviewed-by: PaX Team <pageexec@freemail.hu>
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agomm/vmscan: fix error return in kswapd_run()
Xishi Qiu [Wed, 17 Apr 2013 22:58:34 +0000 (15:58 -0700)]
mm/vmscan: fix error return in kswapd_run()

Fix the error return value in kswapd_run().  The bug was introduced by
commit d5dc0ad928fb ("mm/vmscan: fix error number for failed kthread").

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agohfsplus: fix potential overflow in hfsplus_file_truncate()
Vyacheslav Dubeyko [Wed, 17 Apr 2013 22:58:33 +0000 (15:58 -0700)]
hfsplus: fix potential overflow in hfsplus_file_truncate()

Change a u32 to loff_t hfsplus_file_truncate().

Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoavr32: fix build error in atstk1006_defconfig
Josh Wu [Wed, 17 Apr 2013 22:58:31 +0000 (15:58 -0700)]
avr32: fix build error in atstk1006_defconfig

fixed the following compile error when use avr32 atstk1006_defconfig:

  drivers/mtd/nand/atmel_nand.c: In function 'pmecc_err_location':
  drivers/mtd/nand/atmel_nand.c:639: error: implicit declaration of function 'writel_relaxed'

which was introduced by commit 1c7b874d33b4 ("mtd: at91: atmel_nand: add
Programmable Multibit ECC controller support").  The PMECC for nand
flash code uses writel_relaxed().  But in avr32, there is no macro
"writel_relaxed" defined.

This patch add writex_relaxed macro definitions.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Havard Skinnemoen <havard@skinnemoen.net>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: David Woodhouse <David.Woodhouse@intel.com>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agohugetlbfs: add swap entry check in follow_hugetlb_page()
Naoya Horiguchi [Wed, 17 Apr 2013 22:58:30 +0000 (15:58 -0700)]
hugetlbfs: add swap entry check in follow_hugetlb_page()

With applying the previous patch "hugetlbfs: stop setting VM_DONTDUMP in
initializing vma(VM_HUGETLB)" to reenable hugepage coredump, if a memory
error happens on a hugepage and the affected processes try to access the
error hugepage, we hit VM_BUG_ON(atomic_read(&page->_count) <= 0) in
get_page().

The reason for this bug is that coredump-related code doesn't recognise
"hugepage hwpoison entry" with which a pmd entry is replaced when a memory
error occurs on a hugepage.

In other words, physical address information is stored in different bit
layout between hugepage hwpoison entry and pmd entry, so
follow_hugetlb_page() which is called in get_dump_page() returns a wrong
page from a given address.

The expected behavior is like this:

  absent   is_swap_pte   FOLL_DUMP   Expected behavior
  -------------------------------------------------------------------
   true     false         false       hugetlb_fault
   false    true          false       hugetlb_fault
   false    false         false       return page
   true     false         true        skip page (to avoid allocation)
   false    true          true        hugetlb_fault
   false    false         true        return page

With this patch, we can call hugetlb_fault() and take proper actions (we
wait for migration entries, fail with VM_FAULT_HWPOISON_LARGE for
hwpoisoned entries,) and as the result we can dump all hugepages except
for hwpoisoned ones.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [2.6.34+?]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agofs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()
Naoya Horiguchi [Wed, 17 Apr 2013 22:58:28 +0000 (15:58 -0700)]
fs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()

Documentation/filesystems/proc.txt says about coredump_filter bitmask,

  Note bit 0-4 doesn't effect any hugetlb memory. hugetlb memory are only
  effected by bit 5-6.

However current code can go into the subsequent flag checks of bit 0-4
for vma(VM_HUGETLB). So this patch inserts 'return' and makes it work
as written in the document.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [3.7+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agohugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)
Naoya Horiguchi [Wed, 17 Apr 2013 22:58:27 +0000 (15:58 -0700)]
hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)

Currently we fail to include any data on hugepages into coredump,
because VM_DONTDUMP is set on hugetlbfs's vma.  This behavior was
recently introduced by commit 314e51b9851b ("mm: kill vma flag
VM_RESERVED and mm->reserved_vm counter").

This looks to me a serious regression, so let's fix it.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [3.7+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agocheckpatch: fix stringification macro defect
Joe Perches [Wed, 17 Apr 2013 22:58:26 +0000 (15:58 -0700)]
checkpatch: fix stringification macro defect

Fix checkpatch misreporting defect with stringification macros

ERROR: Macros with complex values should be enclosed in parenthesis
  #27: FILE: arch/arm/include/asm/kgdb.h:41:
  +#define ___to_string(X) #X

Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Vincent Stehlé <v-stehle@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agodrivers/video/mmp/core.c: fix use-after-free bug
Andrei Epure [Wed, 17 Apr 2013 22:58:24 +0000 (15:58 -0700)]
drivers/video/mmp/core.c: fix use-after-free bug

Found with coccinelle.

Signed-off-by: Andrei Epure <epure.andrei@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agothinkpad-acpi: kill hotkey_thread_mutex
Oleg Nesterov [Wed, 17 Apr 2013 22:58:23 +0000 (15:58 -0700)]
thinkpad-acpi: kill hotkey_thread_mutex

hotkey_kthread() does try_to_freeze() under hotkey_thread_mutex.

We can simply kill this mutex, hotkey_poll_stop_sync() does not need to
serialize with hotkey_kthread().  When kthread_stop() returns the thread
is already dead, it called do_exit()->complete_vfork_done().

Reported-by: Artem Savkov <artem.savkov@gmail.com>
Reported-by: Maciej Rutecki <maciej.rutecki@gmail.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>
Cc: Aaron Lu <aaron.lu@intel.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agobatman-adv: make is_my_mac() check for the current mesh only
Antonio Quartulli [Wed, 3 Apr 2013 17:10:26 +0000 (19:10 +0200)]
batman-adv: make is_my_mac() check for the current mesh only

On a multi-mesh node (a node running more than one batman-adv
virtual interface) batadv_is_my_mac() has to check MAC
addresses of hard interfaces belonging to the current mesh
only.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Wed, 17 Apr 2013 19:52:02 +0000 (12:52 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

Pull Ceph fix from Sage Weil:
 "It's a simple fix for a hard to hit race, but low-risk and clearly
  correct"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  rbd: do a safe list traversal in rbd_img_request_submit()

11 years agoARM: KVM: fix unbalanced get_cpu() in access_dcsw
Marc Zyngier [Wed, 17 Apr 2013 19:09:09 +0000 (12:09 -0700)]
ARM: KVM: fix unbalanced get_cpu() in access_dcsw

In the very unlikely event where a guest would be foolish enough to
*read* from a write-only cache maintainance register, we end up
with preemption disabled, due to a misplaced get_cpu().

Just move the "is_write" test outside of the critical section.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agokexec: use Crash kernel for Crash kernel low
Yinghai Lu [Tue, 16 Apr 2013 05:23:46 +0000 (22:23 -0700)]
kexec: use Crash kernel for Crash kernel low

We can extend kexec-tools to support multiple "Crash kernel" in /proc/iomem
instead.

So we can use "Crash kernel" instead of "Crash kernel low" in /proc/iomem.

Suggested-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1366089828-19692-3-git-send-email-yinghai@kernel.org
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
11 years agox86, kdump: Change crashkernel_high/low= to crashkernel=,high/low
Yinghai Lu [Tue, 16 Apr 2013 05:23:48 +0000 (22:23 -0700)]
x86, kdump: Change crashkernel_high/low= to crashkernel=,high/low

Per hpa, use crashkernel=X,high crashkernel=Y,low instead of
crashkernel_hign=X crashkernel_low=Y. As that could be extensible.

-v2: according to Vivek, change delimiter to ;
-v3: let hign and low only handle simple form and it conforms to
description in kernel-parameters.txt
     still keep crashkernel=X override any crashkernel=X,high
        crashkernel=Y,low
-v4: update get_last_crashkernel returning and add more strict
     checking in parse_crashkernel_simple() found by HATAYAMA.
-v5: Change delimiter back to , according to HPA.
     also separate parse_suffix from parse_simper according to vivek.
so we can avoid @pos in that path.
-v6: Tight the checking about crashkernel=X,highblahblah,high
     found by HTYAYAMA.

Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1366089828-19692-5-git-send-email-yinghai@kernel.org
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
11 years agox86, kdump: Retore crashkernel= to allocate under 896M
Yinghai Lu [Tue, 16 Apr 2013 05:23:47 +0000 (22:23 -0700)]
x86, kdump: Retore crashkernel= to allocate under 896M

Vivek found old kexec-tools does not work new kernel anymore.

So change back crashkernel= back to old behavoir, and add crashkernel_high=
to let user decide if buffer could be above 4G, and also new kexec-tools will
be needed.

-v2: let crashkernel=X override crashkernel_high=
    update description about _high will be ignored by crashkernel=X
-v3: update description about kernel-parameters.txt according to Vivek.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1366089828-19692-4-git-send-email-yinghai@kernel.org
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
11 years agox86, kdump: Set crashkernel_low automatically
Yinghai Lu [Tue, 16 Apr 2013 05:23:45 +0000 (22:23 -0700)]
x86, kdump: Set crashkernel_low automatically

Chao said that kdump does does work well on his system on 3.8
without extra parameter, even iommu does not work with kdump.
And now have to append crashkernel_low=Y in first kernel to make
kdump work.

We have now modified crashkernel=X to allocate memory beyong 4G (if
available) and do not allocate low range for crashkernel if the user
does not specify that with crashkernel_low=Y.  This causes regression
if iommu is not enabled.  Without iommu, swiotlb needs to be setup in
first 4G and there is no low memory available to second kernel.

Set crashkernel_low automatically if the user does not specify that.

For system that does support IOMMU with kdump properly, user could
specify crashkernel_low=0 to save that 72M low ram.

-v3: add swiotlb_size() according to Konrad.
-v4: add comments what 8M is for according to hpa.
     also update more crashkernel_low= in kernel-parameters.txt
-v5: update changelog according to Vivek.
-v6: Change description about swiotlb referring according to HATAYAMA.

Reported-by: WANG Chao <chaowang@redhat.com>
Tested-by: WANG Chao <chaowang@redhat.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1366089828-19692-2-git-send-email-yinghai@kernel.org
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
11 years agorbd: do a safe list traversal in rbd_img_request_submit()
Alex Elder [Wed, 10 Apr 2013 22:47:46 +0000 (17:47 -0500)]
rbd: do a safe list traversal in rbd_img_request_submit()

It's possible that the reference to the object request dropped
inside the loop in rbd_img_request_submit() will be the last
one, in which case the content of the object pointer can't be
trusted.

Use a safe form of the object request list traversal to avoid
problems.

This resolves:
    http://tracker.ceph.com/issues/4705

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
11 years agoARM: 7698/1: perf: fix group validation when using enable_on_exec
Will Deacon [Fri, 12 Apr 2013 18:04:19 +0000 (19:04 +0100)]
ARM: 7698/1: perf: fix group validation when using enable_on_exec

Events may be created with attr->disabled == 1 and attr->enable_on_exec
== 1, which confuses the group validation code because events with the
PERF_EVENT_STATE_OFF are not considered candidates for scheduling, which
may lead to failure at group scheduling time.

This patch fixes the validation check for ARM, so that events in the
OFF state are still considered when enable_on_exec is true.

Cc: stable@vger.kernel.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Jiri Olsa <jolsa@redhat.com>
Reported-by: Sudeep KarkadaNagesha <Sudeep.KarkadaNagesha@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
11 years agoARM: 7697/1: hw_breakpoint: do not use __cpuinitdata for dbg_cpu_pm_nb
Bastian Hecht [Fri, 12 Apr 2013 18:03:50 +0000 (19:03 +0100)]
ARM: 7697/1: hw_breakpoint: do not use __cpuinitdata for dbg_cpu_pm_nb

We must not declare dbg_cpu_pm_nb as __cpuinitdata as we need it after
system initialization for Suspend and CPUIdle.

This was done in commit 9a6eb310eaa5 ("ARM: hw_breakpoint: Debug powerdown
support for self-hosted debug").

Cc: stable@vger.kernel.org
Cc: Dietmar Eggemann <Dietmar.Eggemann@arm.com>
Signed-off-by: Bastian Hecht <hechtb+renesas@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
11 years agoARM: 7696/1: Fix kexec by setting outer_cache.inv_all for Feroceon
Illia Ragozin [Wed, 10 Apr 2013 18:43:34 +0000 (19:43 +0100)]
ARM: 7696/1: Fix kexec by setting outer_cache.inv_all for Feroceon

On Feroceon the L2 cache becomes non-coherent with the CPU
when the L1 caches are disabled. Thus the L2 needs to be invalidated
after both L1 caches are disabled.

On kexec before the starting the code for relocation the kernel,
the L1 caches are disabled in cpu_froc_fin (cpu_v7_proc_fin for Feroceon),
but after L2 cache is never invalidated, because inv_all is not set
in cache-feroceon-l2.c.
So kernel relocation and decompression may has (and usually has) errors.
Setting the function enables L2 invalidation and fixes the issue.

Cc: <stable@vger.kernel.org>
Signed-off-by: Illia Ragozin <illia.ragozin@grapecom.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
11 years agoARM: 7694/1: ARM, TCM: initialize TCM in paging_init(), instead of setup_arch()
Joonsoo Kim [Fri, 5 Apr 2013 02:16:51 +0000 (03:16 +0100)]
ARM: 7694/1: ARM, TCM: initialize TCM in paging_init(), instead of setup_arch()

tcm_init() call iotable_init() and it use early_alloc variants which
do memblock allocation. Directly using memblock allocation after
initializing bootmem should not permitted, because bootmem can't know
where are additinally reserved.
So move tcm_init() to a safe place before initalizing bootmem.

(On the U300)

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
11 years agoARM: 7692/1: iop3xx: move IOP3XX_PERIPHERAL_VIRT_BASE
Aaro Koskinen [Wed, 3 Apr 2013 21:28:41 +0000 (22:28 +0100)]
ARM: 7692/1: iop3xx: move IOP3XX_PERIPHERAL_VIRT_BASE

Currently IOP3XX_PERIPHERAL_VIRT_BASE conflicts with PCI_IO_VIRT_BASE:

address         size
PCI_IO_VIRT_BASE                0xfee00000      0x200000
IOP3XX_PERIPHERAL_VIRT_BASE     0xfeffe000      0x2000

Fix by moving IOP3XX_PERIPHERAL_VIRT_BASE below PCI_IO_VIRT_BASE.

The patch fixes the following kernel panic with 3.9-rc1 on iop3xx boards:

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 3.9.0-rc1-iop32x (aaro@blackmetal) (gcc version 4.7.2 (GCC) ) #20 PREEMPT Tue Mar 5 16:44:36 EET 2013
[    0.000000] bootconsole [earlycon0] enabled
[    0.000000] ------------[ cut here ]------------
[    0.000000] kernel BUG at mm/vmalloc.c:1145!
[    0.000000] Internal error: Oops - BUG: 0 [#1] PREEMPT ARM
[    0.000000] Modules linked in:
[    0.000000] CPU: 0    Not tainted  (3.9.0-rc1-iop32x #20)
[    0.000000] PC is at vm_area_add_early+0x4c/0x88
[    0.000000] LR is at add_static_vm_early+0x14/0x68
[    0.000000] pc : [<c03e74a8>]    lr : [<c03e1c40>]    psr: 800000d3
[    0.000000] sp : c03ffee4  ip : dfffdf88  fp : c03ffef4
[    0.000000] r10: 00000002  r9 : 000000cf  r8 : 00000653
[    0.000000] r7 : c040eca8  r6 : c03e2408  r5 : dfffdf60  r4 : 00200000
[    0.000000] r3 : dfffdfd8  r2 : feffe000  r1 : ff000000  r0 : dfffdf60
[    0.000000] Flags: Nzcv  IRQs off  FIQs off  Mode SVC_32  ISA ARM  Segment kernel
[    0.000000] Control: 0000397f  Table: a0004000  DAC: 00000017
[    0.000000] Process swapper (pid: 0, stack limit = 0xc03fe1b8)
[    0.000000] Stack: (0xc03ffee4 to 0xc0400000)
[    0.000000] fee0:          00200000 c03fff0c c03ffef8 c03e1c40 c03e7468 00200000 fee00000
[    0.000000] ff00: c03fff2c c03fff10 c03e23e4 c03e1c38 feffe000 c0408ee4 ff000000 c0408f04
[    0.000000] ff20: c03fff3c c03fff30 c03e2434 c03e23b4 c03fff84 c03fff40 c03e2c94 c03e2414
[    0.000000] ff40: c03f8878 c03f6410 ffff0000 000bffff 00001000 00000008 c03fff84 c03f6410
[    0.000000] ff60: c04227e8 c03fffd4 a0008000 c03f8878 69052e30 c02f96eb c03fffbc c03fff88
[    0.000000] ff80: c03e044c c03e268c 00000000 0000397f c0385130 00000001 ffffffff c03f8874
[    0.000000] ffa0: dfffffff a0004000 69052e30 a03f61a0 c03ffff4 c03fffc0 c03dd5cc c03e0184
[    0.000000] ffc0: 00000000 00000000 00000000 00000000 00000000 c03f8878 0000397d c040601c
[    0.000000] ffe0: c03f8874 c0408674 00000000 c03ffff8 a0008040 c03dd558 00000000 00000000
[    0.000000] Backtrace:
[    0.000000] [<c03e745c>] (vm_area_add_early+0x0/0x88) from [<c03e1c40>] (add_static_vm_early+0x14/0x68)

Tested-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 17 Apr 2013 15:50:59 +0000 (08:50 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix erroneous netfilter drop of SIP packets generated by some Cisco
    phones, from Patrick McHardy.

 2) Fix netfilter IPSET refcounting in list_set_add(), from Jozsef
    Kadlecsik.

 3) Fix TCP syncookies route lookup key, we don't use the same values we
    would use for the usual SYN receive processing, from Dmitry Popov.

 4) Fix NULL deref in bond_slave_netdev_event(), from Nikolay
    Aleksandrov.

 5) When bonding enslave fails, we can forget to clear the IFF_BONDING
    bit, fix also from Nikolay Aleksandrov.

 6) skb->csum_start is 16-bits, which is almost always just fine.  But
    if we reallocate the headroom of an SKB this can push the
    skb->csum_start value outside of it's valid range.  This can easily
    happen when collapsing multiple SKBs from the retransmit queue
    together.

    Fix from Thomas Graf.

 7) Fix NULL deref in be2net driver due to missing check of
    __vlan_put_tag() return value, from Ivan Vecera.

 8) tun_set_iff() returns zero instead of error code on failure, fix
    from Wei Yongjun.

 9) Like GARP, 802 MRP needs to hold the app->lock when adding MAD
    events and queueing PDUs.  Fix from David Ward.

10) Build fix, MVMDIO needs PHYLIB, from Thomas Petazzoni..

11) Fix mac80211 static with ipv6 modular build, from Cong Wang.

12) If userland specifies a path cost explicitly, do not override it
    when the carrier state changes.  From Stephen Hemminger.

13) mvnets calculates the TX queue to use incorrectly resulting in
    garbage pointer derefs and crashes, fix from Willy Tarreau.

14) cdc_mbim does erroneous sizeof(ETH_HLEN).  Fix from Bjorn Mork.

15) IP fragmentation can leak a refcount-less route out from an RCU
    protected section.  This results in crashes and all sorts of hard to
    diagnose behavior.  Fix from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (24 commits)
  qlcnic: fix beaconing test for 82xx adapter
  net: drop dst before queueing fragments
  net: fec: fix regression in link change accounting
  net: cdc_mbim: remove bogus sizeof()
  drivers: net: ethernet: cpsw: get slave VLAN id from slave node instead of cpsw node
  net: mvneta: fix improper tx queue usage in mvneta_tx()
  esp4: fix error return code in esp_output()
  bridge: make user modified path cost sticky
  ipv6: statically link register_inet6addr_notifier()
  net: mvmdio: add select PHYLIB
  net/802/mrp: fix possible race condition when calling mrp_pdu_queue()
  tuntap: fix error return code in tun_set_iff()
  be2net: take care of __vlan_put_tag return value
  can: sja1000: fix handling on dt properties on little endian systems
  can: mcp251x: add missing IRQF_ONESHOT to request_threaded_irq
  netfilter: nf_nat: fix race when unloading protocol modules
  tcp: Reallocate headroom if it would overflow csum_start
  stmmac: prevent interrupt loop with MMC RX IPC Counter
  bonding: IFF_BONDING is not stripped on enslave failure
  bonding: fix netdev event NULL pointer dereference
  ...

11 years agos390: move dummy io_remap_pfn_range() to asm/pgtable.h
Linus Torvalds [Wed, 17 Apr 2013 15:46:19 +0000 (08:46 -0700)]
s390: move dummy io_remap_pfn_range() to asm/pgtable.h

Commit b4cbb197c7e7 ("vm: add vm_iomap_memory() helper function") added
a helper function wrapper around io_remap_pfn_range(), and every other
architecture defined it in <asm/pgtable.h>.

The s390 choice of <asm/io.h> may make sense, but is not very convenient
for this case, and gratuitous differences like that cause unexpected errors like this:

   mm/memory.c: In function 'vm_iomap_memory':
   mm/memory.c:2439:2: error: implicit declaration of function 'io_remap_pfn_range' [-Werror=implicit-function-declaration]

Glory be the kbuild test robot who noticed this, bisected it, and
reported it to the guilty parties (ie me).

Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agox86,efi: Implement efi_no_storage_paranoia parameter
Richard Weinberger [Tue, 16 Apr 2013 23:00:53 +0000 (01:00 +0200)]
x86,efi: Implement efi_no_storage_paranoia parameter

Using this parameter one can disable the storage_size/2 check if
he is really sure that the UEFI does sane gc and fulfills the spec.

This parameter is useful if a devices uses more than 50% of the
storage by default.
The Intel DQSW67 desktop board is such a sucker for exmaple.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
11 years agoregulator: ab8500: Fix set voltage for AB8540_LDO_AUX3
Axel Lin [Tue, 16 Apr 2013 16:50:20 +0000 (00:50 +0800)]
regulator: ab8500: Fix set voltage for AB8540_LDO_AUX3

When setting voltage for AB8540_LDO_AUX3, current code only updates one of
info->voltage_reg and info->expand_register registers which is wrong.
To ensure we set to correct voltage, it always needs to clear or set
expand_register.voltage_mask bit of expand_register.

The function of the expand register bit is the following (from the user manual):
0: VAUX3 output voltage is determined by Vaux3Sel bit settings in register
   VldoCVaux3Sel
1: VAUX3 output voltage is set to 3.05V regardless of Vaux3Sel settings in
   register VldoCVaux3Sel (VldoCVaux3Sel is the register at 0x0421)

So when going to 3.05V, set the expand register bit.
When leaving 3.05V for another voltage, set the target voltage before clearing
the expand register bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: ab8500-ext: Remove enable() and disable() functions
Axel Lin [Tue, 16 Apr 2013 15:33:00 +0000 (23:33 +0800)]
regulator: ab8500-ext: Remove enable() and disable() functions

Both enable() and disable() functions have only one caller, thus remove them.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: ab8500-ext: Don't update info->update_val if set_mode() fails
Axel Lin [Tue, 16 Apr 2013 15:29:12 +0000 (23:29 +0800)]
regulator: ab8500-ext: Don't update info->update_val if set_mode() fails

This ensures info->update_val status is still correct if set_mode() call fails.
Otherwise, get_mode() may return wrong status if a set_mode() call fails.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: ab8500: Don't update lp_mode_req flag in set_mode() error paths
Axel Lin [Tue, 9 Apr 2013 12:17:15 +0000 (20:17 +0800)]
regulator: ab8500: Don't update lp_mode_req flag in set_mode() error paths

Currently, set invalid mode setting for shared mode regulators may change
sm->lp_mode_req flag. This patch ensures we don't set lp_mode_req flag to wrong
status if set_mode() fails.

This patch includes some clean up, and these changes makes this patch looks like
code refactor. The clean up is mainly to avoid adding ugly code to handle
failure paths.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: ab8500: Don't update info->update_val if write to register fails
Axel Lin [Tue, 9 Apr 2013 12:15:06 +0000 (20:15 +0800)]
regulator: ab8500: Don't update info->update_val if write to register fails

This patch ensures info->update_val is consistent with current register value.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: palmas: add support for LDO8 tracking mode
Laxman Dewangan [Wed, 17 Apr 2013 09:43:13 +0000 (15:13 +0530)]
regulator: palmas: add support for LDO8 tracking mode

LDO8 of Palma device like tps65913 support the tracking mode
on which LDO8 track the SMPS45 voltage when SMPS45 is ON
and use the LDO8.VOLTAGE_SEL register when SMPS45 is OFF.

On track mode, the steps of voltage change for LDO8 is 25mV
where in non-tracking mode it is 50mV. Set the steps accordingly.
Number of voltage count is still same for both the cases.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: palmas: support for external regulator through control outputs
Laxman Dewangan [Wed, 17 Apr 2013 09:43:12 +0000 (15:13 +0530)]
regulator: palmas: support for external regulator through control outputs

Palmas device have control outputs like REGEN1, REGEN2, REGEN3,
SYSEN1 and SYSEN2. These control outputs can be used for controlling
external voltage switches to enabled/disable voltage outputs.

Add support of these control outputs through regulator framework.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: palmas: clear sleep bits if not selected
Laxman Dewangan [Wed, 17 Apr 2013 09:43:11 +0000 (15:13 +0530)]
regulator: palmas: clear sleep bits if not selected

Clear the sleep/warm reset bits when it is not selected through
regulator platform data. This will make sure that configuration
is inline with the platform data regardless of boot/POR
configuration.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: core: return err value for regulator_get if there is no DT binding
Nishanth Menon [Tue, 16 Apr 2013 21:45:16 +0000 (16:45 -0500)]
regulator: core: return err value for regulator_get if there is no DT binding

commit 6d191a5fc7a969d972f1681e1c23781aecb06a61
(regulator: core: Don't defer probe if there's no DT binding for a supply)

Attempted to differentiate between regulator_get() with an actual
DT binding for the supply and when there is none to avoid unnecessary
deferal.
However, ret value supplied by regulator_dev_lookup() is being
ignored by regulator_get(). So, exit with the appropriate return value.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: as3711: Use a static of_regulator_match table for of_regulator_match
Axel Lin [Wed, 17 Apr 2013 08:01:22 +0000 (16:01 +0800)]
regulator: as3711: Use a static of_regulator_match table for of_regulator_match

The same table can be used for multiple instance of pdev, so we don't need to
allocate memory for of_regulator_match table per pdev.

match->driver_data points to the corresponding entry of as3711_reg_info,
however it is not used in current code, thus this patch does not set
driver_data in the of_regulator_match table.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agofuse: fix type definitions in uapi header
Miklos Szeredi [Wed, 17 Apr 2013 10:30:40 +0000 (12:30 +0200)]
fuse: fix type definitions in uapi header

Commit 7e98d53086d18c877cb44e9065219335184024de (Synchronize fuse header with
one used in library) added #ifdef __linux__ around defines if it is not set.
The kernel build is self-contained and can be built on non-Linux toolchains.
After the mentioned commit builds on non-Linux toolchains will try to include
stdint.h and fail due to -nostdinc, and then fail with a bunch of undefined type
errors.

Fix by checking for __KERNEL__ instead of __linux__ and using the standard int
types instead of the linux specific ones.

Reported-by: Arve Hjønnevåg <arve@android.com>
Reported-by: Colin Cross <ccross@android.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
11 years agoMerge branch 'for-rmk/740t' of git://git.kernel.org/pub/scm/linux/kernel/git/will...
Russell King [Wed, 17 Apr 2013 09:35:23 +0000 (10:35 +0100)]
Merge branch 'for-rmk/740t' of git://git./linux/kernel/git/will/linux into fixes

11 years agoqlcnic: fix beaconing test for 82xx adapter
Himanshu Madhani [Tue, 16 Apr 2013 18:11:10 +0000 (18:11 +0000)]
qlcnic: fix beaconing test for 82xx adapter

o Commit 319ecf121e1da3d75dd1bde32fed255532e61797
  ("qlcnic: 83xx sysfs routines") introduced regression
  for beaconing test while refactoring 82xx code. This patch is to
  revert code to fix beaconing test for 82xx adapter.

Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: drop dst before queueing fragments
Eric Dumazet [Tue, 16 Apr 2013 12:55:41 +0000 (12:55 +0000)]
net: drop dst before queueing fragments

Commit 4a94445c9a5c (net: Use ip_route_input_noref() in input path)
added a bug in IP defragmentation handling, as non refcounted
dst could escape an RCU protected section.

Commit 64f3b9e203bd068 (net: ip_expire() must revalidate route) fixed
the case of timeouts, but not the general problem.

Tom Parkin noticed crashes in UDP stack and provided a patch,
but further analysis permitted us to pinpoint the root cause.

Before queueing a packet into a frag list, we must drop its dst,
as this dst has limited lifetime (RCU protected)

When/if a packet is finally reassembled, we use the dst of the very
last skb, still protected by RCU and valid, as the dst of the
reassembled packet.

Use same logic in IPv6, as there is no need to hold dst references.

Reported-by: Tom Parkin <tparkin@katalix.com>
Tested-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Wed, 17 Apr 2013 02:49:03 +0000 (19:49 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fix from Russell King:
 "A build fix for an incomplete change to the ARM cpu suspend code"

* branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: Do 15e0d9e37c (ARM: pm: let platforms select cpu_suspend support) properly

11 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 17 Apr 2013 02:46:14 +0000 (19:46 -0700)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Marcelo Tosatti:
 "PPC and ARM KVM fixes"

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  ARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write
  ARM: KVM: fix KVM_CAP_ARM_SET_DEVICE_ADDR reporting
  kvm/ppc/e500: eliminate tlb_refs
  kvm/ppc/e500: g2h_tlb1_map: clear old bit before setting new bit
  kvm/ppc/e500: h2g_tlb1_rmap: esel 0 is valid
  kvm/powerpc/e500mc: fix tlb invalidation on cpu migration

11 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixes
Linus Torvalds [Wed, 17 Apr 2013 02:45:15 +0000 (19:45 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/sfr/next-fixes

Pull powerpc fixes from Stephen Rothwell:
 "Three regresions in the PowerPC code.  One from v3.7 the others from
  this merge window."

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixes:
  powerpc: add a missing label in resume_kernel
  powerpc: Fix audit crash due to save/restore PPR changes
  powerpc: fix compiling CONFIG_PPC_TRANSACTIONAL_MEM when CONFIG_ALTIVEC=n

11 years agoMerge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Linus Torvalds [Wed, 17 Apr 2013 02:44:10 +0000 (19:44 -0700)]
Merge branch 'rc-fixes' of git://git./linux/kernel/git/mmarek/kbuild

Pull kbuild fix from Michal Marek:
 "Fix for a missing dependency when generating scripts/mod/devicetable-offsets.h.
  This dependency got introduced in v3.9-rc1."

* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: generate generic headers before recursing into scripts

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Wed, 17 Apr 2013 02:43:30 +0000 (19:43 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:
 "Two small fixups to the Wacom driver"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wacom - correct reported resolution for Intuos4 Wireless
  Input: wacom - fix "can not retrieve extra class descriptor" for 24HDT

11 years agoMerge branch 'kvm-arm-fixes-3.9' of git://github.com/columbia/linux-kvm-arm
Marcelo Tosatti [Tue, 16 Apr 2013 23:49:47 +0000 (20:49 -0300)]
Merge branch 'kvm-arm-fixes-3.9' of git://github.com/columbia/linux-kvm-arm

* 'kvm-arm-fixes-3.9' of git://github.com/columbia/linux-kvm-arm:
  ARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write
  ARM: KVM: fix KVM_CAP_ARM_SET_DEVICE_ADDR reporting

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
11 years agovm: add vm_iomap_memory() helper function
Linus Torvalds [Tue, 16 Apr 2013 20:45:37 +0000 (13:45 -0700)]
vm: add vm_iomap_memory() helper function

Various drivers end up replicating the code to mmap() their memory
buffers into user space, and our core memory remapping function may be
very flexible but it is unnecessarily complicated for the common cases
to use.

Our internal VM uses pfn's ("page frame numbers") which simplifies
things for the VM, and allows us to pass physical addresses around in a
denser and more efficient format than passing a "phys_addr_t" around,
and having to shift it up and down by the page size.  But it just means
that drivers end up doing that shifting instead at the interface level.

It also means that drivers end up mucking around with internal VM things
like the vma details (vm_pgoff, vm_start/end) way more than they really
need to.

So this just exports a function to map a certain physical memory range
into user space (using a phys_addr_t based interface that is much more
natural for a driver) and hides all the complexity from the driver.
Some drivers will still end up tweaking the vm_page_prot details for
things like prefetching or cacheability etc, but that's actually
relevant to the driver, rather than caring about what the page offset of
the mapping is into the particular IO memory region.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write
Marc Zyngier [Fri, 12 Apr 2013 13:00:16 +0000 (14:00 +0100)]
ARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write

Looks like our L_PTE_S2_RDWR definition is slightly wrong,
and is actually write only (see ARM ARM Table B3-9, Stage 2 control
of access permissions). Didn't make a difference for normal pages,
as we OR the flags together, but I'm still wondering how it worked
for Stage-2 mapped devices, such as the GIC.

Brown paper bag time, again.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
11 years agoARM: KVM: fix KVM_CAP_ARM_SET_DEVICE_ADDR reporting
Marc Zyngier [Wed, 3 Apr 2013 09:43:13 +0000 (10:43 +0100)]
ARM: KVM: fix KVM_CAP_ARM_SET_DEVICE_ADDR reporting

Commit 3401d54696f9 (KVM: ARM: Introduce KVM_ARM_SET_DEVICE_ADDR
ioctl) added support for the KVM_CAP_ARM_SET_DEVICE_ADDR capability,
but failed to add a break in the relevant case statement, returning
the number of CPUs instead.

Luckilly enough, the CONFIG_NR_CPUS=0 patch hasn't been merged yet
(https://lkml.org/lkml/diff/2012/3/31/131/1), so the bug wasn't
noticed.

Just give it a break!

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
11 years agonet: fec: fix regression in link change accounting
Lucas Stach [Tue, 16 Apr 2013 00:42:42 +0000 (00:42 +0000)]
net: fec: fix regression in link change accounting

A link-down isn't properly saved in the FEC state, so we wouldn't restart the
FEC after a repeated link-up.

Regression was introduced with commit
d97e7497 "net: fec: restart the FEC when PHY speed changes"

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: cdc_mbim: remove bogus sizeof()
Bjørn Mork [Tue, 16 Apr 2013 00:17:07 +0000 (00:17 +0000)]
net: cdc_mbim: remove bogus sizeof()

The intention was to test against the constant, not the size of
the constant.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoefi: Export efi_query_variable_store() for efivars.ko
Sergey Vlasov [Tue, 16 Apr 2013 14:31:09 +0000 (18:31 +0400)]
efi: Export efi_query_variable_store() for efivars.ko

Fixes build with CONFIG_EFI_VARS=m which was broken after the commit
"x86, efivars: firmware bug workarounds should be in platform code".

Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
11 years agox86/Kconfig: Make EFI select UCS2_STRING
Sergey Vlasov [Tue, 16 Apr 2013 14:31:08 +0000 (18:31 +0400)]
x86/Kconfig: Make EFI select UCS2_STRING

The commit "efi: Distinguish between "remaining space" and actually used
space" added usage of ucs2_*() functions to arch/x86/platform/efi/efi.c,
but the only thing which selected UCS2_STRING was EFI_VARS, which is
technically optional and can be built as a module.

Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
11 years agoperf/x86: Fix offcore_rsp valid mask for SNB/IVB
Stephane Eranian [Tue, 16 Apr 2013 11:51:43 +0000 (13:51 +0200)]
perf/x86: Fix offcore_rsp valid mask for SNB/IVB

The valid mask for both offcore_response_0 and
offcore_response_1 was wrong for SNB/SNB-EP,
IVB/IVB-EP. It was possible to write to
reserved bit and cause a GP fault crashing
the kernel.

This patch fixes the problem by correctly marking the
reserved bits in the valid mask for all the processors
mentioned above.

A distinction between desktop and server parts is introduced
because bits 24-30 are only available on the server parts.

This version of the  patch is just a rebase to perf/urgent tree
and should apply to older kernels as well.

Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: peterz@infradead.org
Cc: jolsa@redhat.com
Cc: gregkh@linuxfoundation.org
Cc: security@kernel.org
Cc: ak@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agoregulator: ab8500: Optimize ab8540_aux3_regulator_get_voltage_sel
Axel Lin [Wed, 10 Apr 2013 06:46:20 +0000 (14:46 +0800)]
regulator: ab8500: Optimize ab8540_aux3_regulator_get_voltage_sel

We can save a register read operation in some case if read
expand_register first.
If info->expand_register.voltage_mask bit is set, no need to read
voltage_reg.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoregulator: rc5t583: Remove unused fields from struct rc5t583_regulator_info
Axel Lin [Fri, 12 Apr 2013 17:25:38 +0000 (01:25 +0800)]
regulator: rc5t583: Remove unused fields from struct rc5t583_regulator_info

The *dev and *mfd of struct rc5t583_regulator_info are not used after convert
to use regmap, remove them.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoefi: Distinguish between "remaining space" and actually used space
Matthew Garrett [Mon, 15 Apr 2013 20:09:47 +0000 (13:09 -0700)]
efi: Distinguish between "remaining space" and actually used space

EFI implementations distinguish between space that is actively used by a
variable and space that merely hasn't been garbage collected yet. Space
that hasn't yet been garbage collected isn't available for use and so isn't
counted in the remaining_space field returned by QueryVariableInfo().

Combined with commit 68d9298 this can cause problems. Some implementations
don't garbage collect until the remaining space is smaller than the maximum
variable size, and as a result check_var_size() will always fail once more
than 50% of the variable store has been used even if most of that space is
marked as available for garbage collection. The user is unable to create
new variables, and deleting variables doesn't increase the remaining space.

The problem that 68d9298 was attempting to avoid was one where certain
platforms fail if the actively used space is greater than 50% of the
available storage space. We should be able to calculate that by simply
summing the size of each available variable and subtracting that from
the total storage space. With luck this will fix the problem described in
https://bugzilla.kernel.org/show_bug.cgi?id=55471 without permitting
damage to occur to the machines 68d9298 was attempting to fix.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
11 years agoefi: Pass boot services variable info to runtime code
Matthew Garrett [Mon, 15 Apr 2013 20:09:46 +0000 (13:09 -0700)]
efi: Pass boot services variable info to runtime code

EFI variables can be flagged as being accessible only within boot services.
This makes it awkward for us to figure out how much space they use at
runtime. In theory we could figure this out by simply comparing the results
from QueryVariableInfo() to the space used by all of our variables, but
that fails if the platform doesn't garbage collect on every boot. Thankfully,
calling QueryVariableInfo() while still inside boot services gives a more
reliable answer. This patch passes that information from the EFI boot stub
up to the efi platform code.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
11 years agoMove utf16 functions to kernel core and rename
Matthew Garrett [Mon, 15 Apr 2013 20:09:45 +0000 (13:09 -0700)]
Move utf16 functions to kernel core and rename

We want to be able to use the utf16 functions that are currently present
in the EFI variables code in platform-specific code as well. Move them to
the kernel core, and in the process rename them to accurately describe what
they do - they don't handle UTF16, only UCS2.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
11 years agodrivers: net: ethernet: cpsw: get slave VLAN id from slave node instead of cpsw node
Mugunthan V N [Mon, 15 Apr 2013 07:31:28 +0000 (07:31 +0000)]
drivers: net: ethernet: cpsw: get slave VLAN id from slave node instead of cpsw node

Dual EMAC slave VLAN id must be got from slave node instead of cpsw node as
VLAN id for each slave will be different.

Reported-by: Mark Jackson <mpfj-list@mimc.co.uk>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: mvneta: fix improper tx queue usage in mvneta_tx()
Willy Tarreau [Thu, 11 Apr 2013 21:00:37 +0000 (23:00 +0200)]
net: mvneta: fix improper tx queue usage in mvneta_tx()

mvneta_tx() was using a static tx queue number causing crashes as
soon as a little bit of traffic was sent via the interface, because
it is normally expected that the same queue should be used as in
dev_queue_xmit().

As suggested by Ben Hutchings, let's use skb_get_queue_mapping() to
get the proper Tx queue number, and use alloc_etherdev_mqs() instead
of alloc_etherdev_mq() to create the queues.

Both my Mirabox and my OpenBlocks AX3 used to crash without this patch
and don't anymore with it. The issue appeared in 3.8 but became more
visible after the fix allowing GSO to be enabled.

Original work was done by Dmitri Epshtein and Thomas Petazzoni. I
just adapted it to take care of Ben's comments.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Cc: Dmitri Epshtein <dima@marvell.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoesp4: fix error return code in esp_output()
Wei Yongjun [Sat, 13 Apr 2013 15:49:03 +0000 (15:49 +0000)]
esp4: fix error return code in esp_output()

Fix to return a negative error code from the error handling
case instead of 0, as returned elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobridge: make user modified path cost sticky
stephen hemminger [Sat, 13 Apr 2013 14:06:07 +0000 (14:06 +0000)]
bridge: make user modified path cost sticky

Keep a STP port path cost value if it was set by a user.
Don't replace it with the link-speed based path cost
whenever the link goes down and comes back up.

Reported-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'v3.9-rc7' into regulator-fix-core
Mark Brown [Mon, 15 Apr 2013 16:27:12 +0000 (17:27 +0100)]
Merge tag 'v3.9-rc7' into regulator-fix-core

Linux 3.9-rc7

Trivial context overlap conflicts:
MAINTAINERS

11 years agoregulator: max8997: Test pdata by NULL checking instead of IS_ERR_OR_NULL
Axel Lin [Sat, 13 Apr 2013 14:05:43 +0000 (22:05 +0800)]
regulator: max8997: Test pdata by NULL checking instead of IS_ERR_OR_NULL

pdata is either a valid pointer or NULL, use NULL checking rather than
IS_ERR_OR_NULL macro.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoInput: wacom - correct reported resolution for Intuos4 Wireless
Jason Gerecke [Mon, 15 Apr 2013 16:10:34 +0000 (09:10 -0700)]
Input: wacom - correct reported resolution for Intuos4 Wireless

Reported-by: Przemo Firszt <przemo@firszt.eu>
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Przemo Firszt <przemo@firszt.eu>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
11 years agoregulator: ab8500: Fix voltage_shift setting for AB8540_LDO_DMIC
Axel Lin [Mon, 15 Apr 2013 08:36:51 +0000 (16:36 +0800)]
regulator: ab8500: Fix voltage_shift setting for AB8540_LDO_DMIC

The voltage_mask is 0xc0, thus we need to set voltage_shift = 6 to get correct
selector in get_voltage_sel and set_voltage_sel.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoMerge branches 'timers-urgent-for-linus', 'irq-urgent-for-linus' and 'core-urgent...
Linus Torvalds [Mon, 15 Apr 2013 14:03:01 +0000 (07:03 -0700)]
Merge branches 'timers-urgent-for-linus', 'irq-urgent-for-linus' and 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull {timer,irq,core} fixes from Thomas Gleixner:

 - timer: bug fix for a cpu hotplug race.

 - irq: single bugfix for a wrong return value, which prevents the
   calling function to invoke the software fallback.

 - core: bugfix which plugs two race confitions which can cause hotplug
   per cpu threads to end up on the wrong cpu.

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  hrtimer: Don't reinitialize a cpu_base lock on CPU_UP

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip: gic: fix irq_trigger return

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kthread: Prevent unpark race which puts threads on the wrong cpu

11 years agoperf: Treat attr.config as u64 in perf_swevent_init()
Tommi Rantala [Sat, 13 Apr 2013 19:49:14 +0000 (22:49 +0300)]
perf: Treat attr.config as u64 in perf_swevent_init()

Trinity discovered that we fail to check all 64 bits of
attr.config passed by user space, resulting to out-of-bounds
access of the perf_swevent_enabled array in
sw_perf_event_destroy().

Introduced in commit b0a873ebb ("perf: Register PMU
implementations").

Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: davej@redhat.com
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Link: http://lkml.kernel.org/r/1365882554-30259-1-git-send-email-tt.rantala@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agopowerpc: add a missing label in resume_kernel
Kevin Hao [Tue, 9 Apr 2013 22:31:24 +0000 (22:31 +0000)]
powerpc: add a missing label in resume_kernel

A label 0 was missed in the patch a9c4e541 (powerpc/kprobe: Complete
kprobe and migrate exception frame). This will cause the kernel
branch to an undetermined address if there really has a conflict when
updating the thread flags.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Cc: stable@vger.kernel.org
Acked-By: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
11 years agopowerpc: Fix audit crash due to save/restore PPR changes
Alistair Popple [Mon, 15 Apr 2013 01:44:14 +0000 (11:44 +1000)]
powerpc: Fix audit crash due to save/restore PPR changes

The current mainline crashes when hitting userspace with the following:

kernel BUG at kernel/auditsc.c:1769!
cpu 0x1: Vector: 700 (Program Check) at [c000000023883a60]
    pc: c0000000001047a8: .__audit_syscall_entry+0x38/0x130
    lr: c00000000000ed64: .do_syscall_trace_enter+0xc4/0x270
    sp: c000000023883ce0
   msr: 8000000000029032
  current = 0xc000000023800000
  paca    = 0xc00000000f080380   softe: 0        irq_happened: 0x01
    pid   = 1629, comm = start_udev
kernel BUG at kernel/auditsc.c:1769!
enter ? for help
[c000000023883d80c00000000000ed64 .do_syscall_trace_enter+0xc4/0x270
[c000000023883e30c000000000009b08 syscall_dotrace+0xc/0x38
 --- Exception: c00 (System Call) at 0000008010ec50dc

Bisecting found the following patch caused it:

commit 44e9309f1f357794b7ae93d5f3e3e6f11d2b8a7f
Author: Haren Myneni <haren@linux.vnet.ibm.com>
powerpc: Implement PPR save/restore

It was found this patch corrupted r9 when calling
SET_DEFAULT_THREAD_PPR()

Using r10 as a scratch register instead of r9 solved the problem.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
11 years agouserns: Changing any namespace id mappings should require privileges
Andy Lutomirski [Sun, 14 Apr 2013 18:44:04 +0000 (11:44 -0700)]
userns: Changing any namespace id mappings should require privileges

Changing uid/gid/projid mappings doesn't change your id within the
namespace; it reconfigures the namespace.  Unprivileged programs should
*not* be able to write these files.  (We're also checking the privileges
on the wrong task.)

Given the write-once nature of these files and the other security
checks, this is likely impossible to usefully exploit.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
11 years agouserns: Check uid_map's opener's fsuid, not the current fsuid
Andy Lutomirski [Sun, 14 Apr 2013 23:28:19 +0000 (16:28 -0700)]
userns: Check uid_map's opener's fsuid, not the current fsuid

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
11 years agouserns: Don't let unprivileged users trick privileged users into setting the id_map
Eric W. Biederman [Sun, 14 Apr 2013 20:47:02 +0000 (13:47 -0700)]
userns: Don't let unprivileged users trick privileged users into setting the id_map

When we require privilege for setting /proc/<pid>/uid_map or
/proc/<pid>/gid_map no longer allow an unprivileged user to
open the file and pass it to a privileged program to write
to the file.

Instead when privilege is required require both the opener and the
writer to have the necessary capabilities.

I have tested this code and verified that setting /proc/<pid>/uid_map
fails when an unprivileged user opens the file and a privielged user
attempts to set the mapping, that unprivileged users can still map
their own id, and that a privileged users can still setup an arbitrary
mapping.

Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
11 years agoLinux 3.9-rc7
Linus Torvalds [Mon, 15 Apr 2013 00:45:16 +0000 (17:45 -0700)]
Linux 3.9-rc7

11 years agoipv6: statically link register_inet6addr_notifier()
Cong Wang [Sun, 14 Apr 2013 15:18:43 +0000 (23:18 +0800)]
ipv6: statically link register_inet6addr_notifier()

Tomas reported the following build error:

net/built-in.o: In function `ieee80211_unregister_hw':
(.text+0x10f0e1): undefined reference to `unregister_inet6addr_notifier'
net/built-in.o: In function `ieee80211_register_hw':
(.text+0x10f610): undefined reference to `register_inet6addr_notifier'
make: *** [vmlinux] Error 1

when built IPv6 as a module.

So we have to statically link these symbols.

Reported-by: Tomas Melin <tomas.melin@iki.fi>
Cc: Tomas Melin <tomas.melin@iki.fi>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: YOSHIFUJI Hidaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:13:24 +0000 (11:13 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set
  x86/mm/cpa/selftest: Fix false positive in CPA self test
  x86/mm/cpa: Convert noop to functional fix
  x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
  x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates

11 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:12:17 +0000 (11:12 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixlets"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/cputime: Fix accounting on multi-threaded processes
  sched/debug: Fix sd->*_idx limit range avoiding overflow
  sched_clock: Prevent 64bit inatomicity on 32bit systems
  sched: Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s

11 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:10:44 +0000 (11:10 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixlets"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix error return code
  ftrace: Fix strncpy() use, use strlcpy() instead of strncpy()
  perf: Fix strncpy() use, use strlcpy() instead of strncpy()
  perf: Fix strncpy() use, always make sure it's NUL terminated
  perf: Fix ring_buffer perf_output_space() boundary calculation
  perf/x86: Fix uninitialized pt_regs in intel_pmu_drain_bts_buffer()

11 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sun, 14 Apr 2013 17:55:20 +0000 (10:55 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "One fix for a hotplug locking regressions, and one fix for an oops if
  you unplug the monitor at an inopportune moment on the udl device."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/fb-helper: Fix locking in drm_fb_helper_hotplug_event
  udl: handle EDID failure properly.