8 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Tue, 22 Nov 2011 21:46:55 +0000]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless into for-davem

8 years agoRevert "rt2800pci: handle spurious interrupts"
John W. Linville [Tue, 22 Nov 2011 21:38:19 +0000]
Revert "rt2800pci: handle spurious interrupts"

This reverts commit 4ba7d9997869d25bd223dea7536fc1ce9fab3b3b.

The original patch was a misguided attempt to improve performance on
some hardware that is apparently prone to spurious interrupt generation.

Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agotc: comment spelling fixes
stephen hemminger [Mon, 21 Nov 2011 06:53:46 +0000]
tc: comment spelling fixes

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoRevert "rt2x00: handle spurious pci interrupts"
John W. Linville [Tue, 22 Nov 2011 21:36:35 +0000]
Revert "rt2x00: handle spurious pci interrupts"

This reverts commit 23085d5796561625db4143a671f1de081f66ef08.

The original patch was a misguided attempt to improve performance on
some hardware that is apparently prone to spurious interrupt generation.

Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agonet: correct comments of skb_shift
Feng King [Mon, 21 Nov 2011 01:47:11 +0000]
net: correct comments of skb_shift

when skb_shift, we want to shift paged data from skb to tgt frag area.
Original comments revert the shift order

Signed-off-by: Feng King <kinwin2008@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet-netlink: fix diag to export IPv4 tos for dual-stack IPv6 sockets
Maciej Żenczykowski [Tue, 22 Nov 2011 21:03:10 +0000]
net-netlink: fix diag to export IPv4 tos for dual-stack IPv6 sockets

Signed-off-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agocaif: fix endian conversion in cffrml_transmit()
Dan Carpenter [Mon, 21 Nov 2011 21:46:24 +0000]
caif: fix endian conversion in cffrml_transmit()

The "tmp" variable here is used to store the result of cpu_to_le16()
so it should be an __le16 instead of an int.  We want the high bits
set and the current code works on little endian systems but not on
big endian systems.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agodccp: fix error propagation in dccp_v4_connect
RongQing.Li [Mon, 21 Nov 2011 21:45:26 +0000]
dccp: fix error propagation in dccp_v4_connect

The errcode is not updated when ip_route_newports() fails.

Signed-off-by: RongQing.Li <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet, sja1000: Don't include version.h in peak_pci.c when not needed
Jesper Juhl [Sun, 20 Nov 2011 11:07:09 +0000]
net, sja1000: Don't include version.h in peak_pci.c when not needed

It was pointed out by "make versioncheck" that we do not need to include
version.h in drivers/net/can/sja1000/peak_pci.c
This patch removes the unneeded include.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoxen-netback: use correct index for invalidation in xen_netbk_tx_check_gop()
Jan Beulich [Fri, 18 Nov 2011 05:42:05 +0000]
xen-netback: use correct index for invalidation in xen_netbk_tx_check_gop()

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agostmmac: mask mmc interrupts
Giuseppe CAVALLARO [Fri, 18 Nov 2011 05:00:20 +0000]
stmmac: mask mmc interrupts

We need to mask the MMC irq otherwise if we raise the mmc
interrupts that are not handled the driver loops in the
handler.
In fact, by default all mmc counters (only used for stats)
are managed in SW and registers are cleared on each READ.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoiseries_veth: Fix wrong parameter given to sizeof call
Thomas Jarosch [Thu, 17 Nov 2011 10:33:52 +0000]
iseries_veth: Fix wrong parameter given to sizeof call

"remote_list" is of type

struct dma_chunk remote_list[VETH_MAX_FRAMES_PER_MSG];

Probably a copy'n'paste error.

Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoprism54: potential memory corruption in prism54_get_essid()
Dan Carpenter [Mon, 21 Nov 2011 14:47:13 +0000]
prism54: potential memory corruption in prism54_get_essid()

"dwrq->length" is the capped version of "essid->length".

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agocfg80211: fix regulatory NULL dereference
Johannes Berg [Mon, 21 Nov 2011 09:44:00 +0000]
cfg80211: fix regulatory NULL dereference

By the time userspace returns with a response to
the regulatory domain request, the wiphy causing
the request might have gone away. If this is so,
reject the update but mark the request as having
been processed anyway.

Cc: Luis R. Rodriguez <lrodriguez@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agomac80211: Fix endian bug in radiotap header generation
Helmut Schaa [Fri, 18 Nov 2011 16:02:16 +0000]
mac80211: Fix endian bug in radiotap header generation

I intoduced this bug in commit a2fe81667410723d941a688e1958a49d67ca3346
"mac80211: Build TX radiotap header dynamically"

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agomac80211: Fix AMSDU rate printout in debugfs.
Ben Greear [Thu, 17 Nov 2011 22:53:36 +0000]
mac80211: Fix AMSDU rate printout in debugfs.

It was flipped.  See section 7.3.2.56 of the 802.11n
spec for details.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sun, 20 Nov 2011 22:59:33 +0000]
Merge git://git./linux/kernel/git/davem/net

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (86 commits)
  ipv4: fix redirect handling
  ping: dont increment ICMP_MIB_INERRORS
  sky2: fix hang in napi_disable
  sky2: enforce minimum ring size
  bonding: Don't allow mode change via sysfs with slaves present
  f_phonet: fix page offset of first received fragment
  stmmac: fix pm functions avoiding sleep on spinlock
  stmmac: remove spin_lock in stmmac_ioctl.
  stmmac: parameters auto-tuning through HW cap reg
  stmmac: fix advertising 1000Base capabilties for non GMII iface
  stmmac: use mdelay on timeout of sw reset
  sky2: version 1.30
  sky2: used fixed RSS key
  sky2: reduce default Tx ring size
  sky2: rename up/down functions
  sky2: pci posting issues
  sky2: fix hang on shutdown (and other irq issues)
  r6040: fix check against MCRO_HASHEN bit in r6040_multicast_list
  MAINTAINERS: change email address for shemminger
  pch_gbe: Move #include of module.h
  ...

8 years agoMerge branch 'kvm-updates/3.2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sun, 20 Nov 2011 22:57:43 +0000]
Merge branch 'kvm-updates/3.2' of git://git./virt/kvm/kvm

* 'kvm-updates/3.2' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM guest: prevent tracing recursion with kvmclock
  Revert "KVM: PPC: Add support for explicit HIOR setting"
  KVM: VMX: Check for automatic switch msr table overflow
  KVM: VMX: Add support for guest/host-only profiling
  KVM: VMX: add support for switching of PERF_GLOBAL_CTRL
  KVM: s390: announce SYNC_MMU
  KVM: s390: Fix tprot locking
  KVM: s390: handle SIGP sense running intercepts
  KVM: s390: Fix RUNNING flag misinterpretation

8 years agoMerge branch 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur...
Linus Torvalds [Sun, 20 Nov 2011 22:34:58 +0000]
Merge branch 'fixes' of ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm

* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
  ARM: wire up process_vm_writev and process_vm_readv syscalls
  ARM: 7160/1: setup: avoid overflowing {elf,arch}_name from proc_info_list
  ARM: 7158/1: add new MFP implement for NUC900
  ARM: 7157/1: fix a building WARNING for nuc900
  ARM: 7156/1: l2x0: fix compile error on !CONFIG_USE_OF
  ARM: 7155/1: arch.h: Declare 'pt_regs' locally
  ARM: 7154/1: mach-bcmring: fix build error in dma.c
  ARM: 7153/1: mach-bcmring: fix build error in core.c
  ARM: 7152/1: distclean: Remove generated .dtb files
  ARM: 7150/1: Allow kernel unaligned accesses on ARMv6+ processors
  ARM: 7149/1: spi/pl022: Enable clock in probe
  Revert "ARM: 7098/1: kdump: copy kernel relocation code at the kexec prepare stage"

8 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Sun, 20 Nov 2011 22:33:02 +0000]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/linux-pm

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / Suspend: Fix bug in suspend statistics update
  PM / Hibernate: Fix the early termination of test modes
  PM / shmobile: Fix build of sh7372_pm_init() for CONFIG_PM unset
  PM Sleep: Do not extend wakeup paths to devices with ignore_children set
  PM / driver core: disable device's runtime PM during shutdown
  PM / devfreq: correct Kconfig dependency
  PM / devfreq: fix use after free in devfreq_remove_device
  PM / shmobile: Avoid restoring the INTCS state during initialization
  PM / devfreq: Remove compiler error after irq.h update
  PM / QoS: Properly use the WARN() macro in dev_pm_qos_add_request()
  PM / Clocks: Only disable enabled clocks in pm_clk_suspend()
  ARM: mach-shmobile: sh7372 A3SP no_suspend_console fix
  PM / shmobile: Don't skip debugging output in pd_power_up()

8 years agoKVM guest: prevent tracing recursion with kvmclock
Avi Kivity [Tue, 15 Nov 2011 12:59:07 +0000]
KVM guest: prevent tracing recursion with kvmclock

Prevent tracing of preempt_disable() in get_cpu_var() in
kvm_clock_read(). When CONFIG_DEBUG_PREEMPT is enabled,
preempt_disable/enable() are traced and this causes the function_graph
tracer to go into an infinite recursion. By open coding the
preempt_disable() around the get_cpu_var(), we can use the notrace
version which prevents preempt_disable/enable() from being traced and
prevents the recursion.

Based on a similar patch for Xen from Jeremy Fitzhardinge.

Tested-by: Gleb Natapov <gleb@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Sat, 19 Nov 2011 18:56:01 +0000]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (exynos4_tmu) Fix Kconfig dependency

[ Merging code in-flight, just because I can.  What timezone should I
  use?  - Linus ]

8 years agoPM / Suspend: Fix bug in suspend statistics update
Srivatsa S. Bhat [Sat, 19 Nov 2011 13:37:57 +0000]
PM / Suspend: Fix bug in suspend statistics update

After commit 2a77c46de1e3dace73745015635ebbc648eca69c
(PM / Suspend: Add statistics debugfs file for suspend to RAM)
a missing pair of braces inside the state_store() function causes even
invalid arguments to suspend to be wrongly treated as failed suspend
attempts. Fix this.

[rjw: Put the hash/subject of the buggy commit into the changelog.]

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

8 years agoXen: update MAINTAINER info
Jeremy Fitzhardinge [Fri, 18 Nov 2011 23:56:06 +0000]
Xen: update MAINTAINER info

No longer at Citrix, still interested in Xen.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agohugetlb: remove dummy definitions of HPAGE_MASK and HPAGE_SIZE
David Rientjes [Sat, 19 Nov 2011 10:33:57 +0000]
hugetlb: remove dummy definitions of HPAGE_MASK and HPAGE_SIZE

Dummy, non-zero definitions for HPAGE_MASK and HPAGE_SIZE were added in
51c6f666fceb ("mm: ZAP_BLOCK causes redundant work") to avoid a divide
by zero in generic kernel code.

That code has since been removed, but probably should never have been
added in the first place: we don't want HPAGE_SIZE to act like PAGE_SIZE
for code that is working with hugepages, for example, when the
dependency on CONFIG_HUGETLB_PAGE has not been fulfilled.

Because hugepage size can differ from architecture to architecture, each
is required to have their own definitions for both HPAGE_MASK and
HPAGE_SIZE.  This is always done in arch/*/include/asm/page.h.

So, just remove the dummy and dangerous definitions since they are no
longer needed and reveals the correct dependencies.  Tested on
architectures using the definitions with allyesconfig: x86 (even with
thp), hppa, mips, powerpc, s390, sh3, sh4, sparc, and sparc64, and with
defconfig on ia64.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 19 Nov 2011 11:06:39 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  new helper: mount_subtree()
  switch create_mnt_ns() to saner calling conventions, fix double mntput() in nfs
  btrfs: fix double mntput() in mount_subvol()

8 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Sat, 19 Nov 2011 11:05:17 +0000]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  MAINTAINERS: update XFS maintainer entry
  xfs: use doalloc flag in xfs_qm_dqattach_one()

8 years agoMerge branch 'for-3.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Sat, 19 Nov 2011 00:23:23 +0000]
Merge branch 'for-3.2-fixes' of git://git./linux/kernel/git/tj/cgroup

* 'for-3.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: Replace Paul Menage with Tejun Heo as cgroups maintainer

8 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 19 Nov 2011 00:16:18 +0000]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  random: Fix handing of arch_get_random_long in get_random_bytes()
  x86: Call stop_machine_text_poke() on all CPUs
  x86, ioapic: Only print ioapic debug information for IRQs belonging to an ioapic chip
  x86/mrst: Avoid reporting wrong nmi status
  x86/mrst: Add support for Penwell clock calibration
  x86/apic: Allow use of lapic timer early calibration result
  x86/apic: Do not clear nr_irqs_gsi if no legacy irqs
  x86/platform: Add a wallclock_init func to x86_platforms ops
  x86/mce: Make mce_chrdev_ops 'static const'

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide
Linus Torvalds [Sat, 19 Nov 2011 00:04:12 +0000]
Merge git://git./linux/kernel/git/davem/ide

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
  cy82c693: fix PCI device selection
  icside: DMA support fix
  IDE: Don't powerdown Compaq Triflex IDE device on suspend
  piix: ICH7 MWDMA1 errata

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Linus Torvalds [Sat, 19 Nov 2011 00:03:31 +0000]
Merge git://git./linux/kernel/git/davem/sparc

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Patch sun4v code sequences properly on module load.
  sparc: Kill custom io_remap_pfn_range().
  sparc: Stash orig_i0 into %g6 instead of %g2
  sparc: Fix handling of orig_i0 wrt. debugging when restarting syscalls.
  sparc: sigutil: Include <linux/errno.h>

8 years agocgroup: Replace Paul Menage with Tejun Heo as cgroups maintainer
Paul Menage [Fri, 18 Nov 2011 22:22:09 +0000]
cgroup: Replace Paul Menage with Tejun Heo as cgroups maintainer

As is probably painfully obvious, I don't have time to be a cgroups
maintainer.  Rather than have me continue to hope that I'll magically
find more spare time, instead Tejun has kindly agreed to take over the
role, along with Li Zefan.

-tj: added cgroup tree URL to MAINTAINERS file

Signed-off-by: Paul Menage <paul@paulmenage.org>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
LKML-Reference: <1321320612-57855-1-git-send-email-paul@paulmenage.org>

8 years agoPM / Hibernate: Fix the early termination of test modes
Srivatsa S. Bhat [Fri, 18 Nov 2011 22:02:42 +0000]
PM / Hibernate: Fix the early termination of test modes

Commit 2aede851ddf08666f68ffc17be446420e9d2a056
(PM / Hibernate: Freeze kernel threads after preallocating memory)
postponed the freezing of kernel threads to after preallocating memory
for hibernation. But while doing that, the hibernation test TEST_FREEZER
and the test mode HIBERNATION_TESTPROC were not moved accordingly.

As a result, when using these test modes, it only goes upto the freezing of
userspace and exits, when in fact it should go till the complete end of task
freezing stage, namely the freezing of kernel threads as well.

So, move these points of exit to appropriate places so that freezing of
kernel threads is also tested while using these test harnesses.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

8 years agoipv4: fix redirect handling
Eric Dumazet [Fri, 18 Nov 2011 20:24:32 +0000]
ipv4: fix redirect handling

commit f39925dbde77 (ipv4: Cache learned redirect information in
inetpeer.) introduced a regression in ICMP redirect handling.

It assumed ipv4_dst_check() would be called because all possible routes
were attached to the inetpeer we modify in ip_rt_redirect(), but thats
not true.

commit 7cc9150ebe (route: fix ICMP redirect validation) tried to fix
this but solution was not complete. (It fixed only one route)

So we must lookup existing routes (including different TOS values) and
call check_peer_redir() on them.

Reported-by: Ivan Zahariev <famzah@icdsoft.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoMAINTAINERS: update XFS maintainer entry
Alex Elder [Fri, 18 Nov 2011 17:21:05 +0000]
MAINTAINERS: update XFS maintainer entry

I will no longer be maintaining XFS for SGI.  Ben Myers
(bpm@sgi.com) has agreed to be the primary maintainer
for XFS in my place.  I will continue to be able to push
commits to the SGI XFS tree if required.  As such I will
continue to be a designated XFS maintainer, but plan to
serve in more of a backup role.

Signed-off-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

8 years agoping: dont increment ICMP_MIB_INERRORS
Eric Dumazet [Thu, 17 Nov 2011 04:40:20 +0000]
ping: dont increment ICMP_MIB_INERRORS

ping module incorrectly increments ICMP_MIB_INERRORS if feeded with a
frame not belonging to its own sockets.

RFC 2011 states that ICMP_MIB_INERRORS should count "the number of ICMP
messages which the entiry received but determined as having
ICMP-specific errors (bad ICMP checksums, bad length, etc.)."

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Vasiliy Kulikov <segoon@openwall.com>
Acked-by: Flavio Leitner <fbl@redhat.com>
Acked-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoMerge branch 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Fri, 18 Nov 2011 15:18:07 +0000]
Merge branch 'stable/for-linus-fixes-3.2' of git://git./linux/kernel/git/konrad/xen

* 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen-gntalloc: signedness bug in add_grefs()
  xen-gntalloc: integer overflow in gntalloc_ioctl_alloc()
  xen-gntdev: integer overflow in gntdev_alloc_map()
  xen:pvhvm: enable PVHVM VCPU placement when using more than 32 CPUs.
  xen/balloon: Avoid OOM when requesting highmem
  xen: Remove hanging references to CONFIG_XEN_PLATFORM_PCI
  xen: map foreign pages for shared rings by updating the PTEs directly

8 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 18 Nov 2011 11:34:35 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: add missed trace_block_plug
  paride: fix potential information leak in pg_read()
  bio: change some signed vars to unsigned
  block: avoid unnecessary plug list flush
  cciss: auto engage SCSI mid layer at driver load time
  loop: cleanup set_status interface
  include/linux/bio.h: use a static inline function for bio_integrity_clone()
  loop: prevent information leak after failed read
  block: Always check length of all iov entries in blk_rq_map_user_iov()
  The Windows driver .inf disables ASPM on all cciss devices. Do the same.
  backing-dev: ensure wakeup_timer is deleted
  block: Revert "[SCSI] genhd: add a new attribute "alias" in gendisk"

8 years agoMerge branch 'unicore32' of git://github.com/gxt/linux
Linus Torvalds [Fri, 18 Nov 2011 09:51:57 +0000]
Merge branch 'unicore32' of git://github.com/gxt/linux

* 'unicore32' of git://github.com/gxt/linux:
  unicore32, exec: remove redundant set_fs(USER_DS)
  unicore32: Fix typo 'PUV3_I2C'
  unicore32: drop unused Kconfig symbols
  rtc: rtc-puv3: Add __devinit and __devexit markers for probe and remove
  arch/unicore32: do not use EXTRA_AFLAGS or EXTRA_CFLAGS
  unicore32: fix build error for find bitops

8 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Fri, 18 Nov 2011 09:16:10 +0000]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/signal32: Fix sigset_t conversion when copying to user
  powerpc: Fix atomic_xxx_return barrier semantics
  powerpc: Remove buggy 9-year-old test for binutils < 2.12.1
  powerpc/book3e-64: Fix debug support for userspace
  powerpc: Remove extraneous CONFIG_PPC_ADV_DEBUG_REGS define
  powerpc: Revert show_regs() define for readability
  powerpc/ps3: Fix SMP lockdep boot warning
  powerpc/ps3: Fix lost SMP IPIs
  powerpc: Add hvcall.h include to book3s_hv.c
  powerpc/trace: Add a dummy stack frame for trace_hardirqs_off
  powerpc: Copy down exception vectors after feature fixups
  powerpc: panic if we can't instantiate RTAS
  powerpc/4xx: Fix typos in kexec config dependencies
  powerpc/fsl: MCU_MPC8349EMITX wants I2C built-in, modular won't do...
  powerpc/fsl_udc_core: Fix dumb typo
  carma-fpga: Missed switch from of_register_platform_driver()
  powerpc: Fix build breakage in jump_label.c

8 years agoMerge branch 'for-linus' of git://git.selinuxproject.org/~jmorris/linux-security
Linus Torvalds [Fri, 18 Nov 2011 09:14:30 +0000]
Merge branch 'for-linus' of git://git.selinuxproject.org/~jmorris/linux-security

* 'for-linus' of git://git.selinuxproject.org/~jmorris/linux-security:
  encrypted-keys: module build fixes
  encrypted-keys: fix error return code
  Smack: smackfs cipso seq read repair

8 years agosparc64: Patch sun4v code sequences properly on module load.
David S. Miller [Fri, 18 Nov 2011 06:44:58 +0000]
sparc64: Patch sun4v code sequences properly on module load.

Some of the sun4v code patching occurs in inline functions visible
to, and usable by, modules.

Therefore we have to patch them up during module load.

Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosky2: fix hang in napi_disable
stephen hemminger [Thu, 17 Nov 2011 14:37:35 +0000]
sky2: fix hang in napi_disable

If IRQ was never initialized, then calling napi_disable() would hang.
Add more bookkeeping to track whether IRQ was ever initialized.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosky2: enforce minimum ring size
stephen hemminger [Thu, 17 Nov 2011 14:37:23 +0000]
sky2: enforce minimum ring size

The hardware has a restriction that the minimum ring size possible
is 128. The number of elements used is controlled by tx_pending and
the overall number of elements in the ring tx_ring_size, therefore it
is okay to limit the number of elements in use to a small value (63)
but still provide a bigger ring.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosparc: Kill custom io_remap_pfn_range().
David S. Miller [Fri, 18 Nov 2011 02:17:59 +0000]
sparc: Kill custom io_remap_pfn_range().

To handle the large physical addresses, just make a simple wrapper
around remap_pfn_range() like MIPS does.

Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agobonding: Don't allow mode change via sysfs with slaves present
Veaceslav Falico [Tue, 15 Nov 2011 06:44:42 +0000]
bonding: Don't allow mode change via sysfs with slaves present

When changing mode via bonding's sysfs, the slaves are not initialized
correctly. Forbid to change modes with slaves present to ensure that every
slave is initialized correctly via bond_enslave().

Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Acked-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoMerge branch 'encrypted-key-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
James Morris [Fri, 18 Nov 2011 00:17:23 +0000]
Merge branch 'encrypted-key-fixes' of git://git./linux/kernel/git/zohar/linux-integrity into for-linus

8 years agoMerge branch 'for-1111' of git://gitorious.org/smack-next/kernel into for-linus
James Morris [Fri, 18 Nov 2011 00:17:06 +0000]
Merge branch 'for-1111' of git://gitorious.org/smack-next/kernel into for-linus

8 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Thu, 17 Nov 2011 22:31:49 +0000]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless

8 years agof_phonet: fix page offset of first received fragment
Rémi Denis-Courmont [Thu, 17 Nov 2011 02:58:55 +0000]
f_phonet: fix page offset of first received fragment

We pull one byte (the MAC header) from the first fragment before the
fragment is actually appended. So the socket buffer length is 1, not 0.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoPM / shmobile: Fix build of sh7372_pm_init() for CONFIG_PM unset
Rafael J. Wysocki [Thu, 17 Nov 2011 20:39:55 +0000]
PM / shmobile: Fix build of sh7372_pm_init() for CONFIG_PM unset

Fix build regression introduced by commit 056879d2f244001b2888cdc8cf
(ARM: mach-shmobile: sh7372 A3SP no_suspend_console fix) by moving
the intialization of the A3SP domain to a separate function and
providing an empty definition of it for CONFIG_PM unset.

Reported-and-tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

8 years agoPM Sleep: Do not extend wakeup paths to devices with ignore_children set
Rafael J. Wysocki [Thu, 17 Nov 2011 20:39:33 +0000]
PM Sleep: Do not extend wakeup paths to devices with ignore_children set

Commit 4ca46ff3e0d8c234cb40ebb6457653b59584426c (PM / Sleep: Mark
devices involved in wakeup signaling during suspend) introduced
the power.wakeup_path field in struct dev_pm_info to mark devices
whose children are enabled to wake up the system from sleep states,
so that power domains containing the parents that provide their
children with wakeup power and/or relay their wakeup signals are not
turned off.  Unfortunately, that introduced a PM regression on SH7372
whose power consumption in the system "memory sleep" state increased
as a result of it, because it prevented the power domain containing
the I2C controller from being turned off when some children of that
controller were enabled to wake up the system, although the
controller was not necessary for them to signal wakeup.

To fix this issue use the observation that devices whose
power.ignore_children flag is set for runtime PM should be treated
analogously during system suspend.  Namely, they shouldn't be
included in wakeup paths going through their children.  Since the
SH7372 I2C controller's power.ignore_children flag is set, doing so
will restore the previous behavior of that SOC.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>

8 years agop54spi: Fix workqueue deadlock
Michael Büsch [Wed, 16 Nov 2011 22:55:46 +0000]
p54spi: Fix workqueue deadlock

priv->work must not be synced while priv->mutex is locked, because
the mutex is taken in the work handler.
Move cancel_work_sync down to after the device shutdown code.
This is safe, because the work handler checks fw_state and bails out
early in case of a race.

Signed-off-by: Michael Buesch <m@bues.ch>
Cc: <stable@vger.kernel.org>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agop54spi: Add missing spin_lock_init
Michael Büsch [Wed, 16 Nov 2011 22:48:31 +0000]
p54spi: Add missing spin_lock_init

The tx_lock is not initialized properly. Add spin_lock_init().

Signed-off-by: Michael Buesch <m@bues.ch>
Cc: <stable@vger.kernel.org>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agort2x00: Fix efuse EEPROM reading on PPC32.
Gertjan van Wingerde [Wed, 16 Nov 2011 22:16:15 +0000]
rt2x00: Fix efuse EEPROM reading on PPC32.

Fix __le32 to __le16 conversion of the first word of an 8-word block
of EEPROM read via the efuse method.

Reported-and-tested-by: Ingvar Hagelund <ingvar@redpill-linpro.com>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
CC: <stable@vger.kernel.org>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agort2x00: handle spurious pci interrupts
Stanislaw Gruszka [Wed, 16 Nov 2011 12:58:42 +0000]
rt2x00: handle spurious pci interrupts

We have documented case of very bad performance issue on rt2800pci
device, because it generate spurious interrupt, what cause irq line
is disabled: https://bugzilla.redhat.com/show_bug.cgi?id=658451

We already address that problem in separate patch by returning
IRQ_HANDLED from interrupt handler. We think similar fix is needed for
other rt2x00 PCI devices, because users report performance problems on
these devices too.

Cc: stable@vger.kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agort2800pci: handle spurious interrupts
Stanislaw Gruszka [Wed, 16 Nov 2011 10:09:17 +0000]
rt2800pci: handle spurious interrupts

Some devices may generate spurious interrupts, we have to handle them
otherwise interrupt line will be disabled with below message and driver
will not work:

[ 2052.114334] irq 17: nobody cared (try booting with the "irqpoll" option)
[ 2052.114339] Pid: 0, comm: swapper Tainted: P           2.6.35.6-48.fc14.x86_64 #1
[ 2052.114341] Call Trace:
[ 2052.114342]  <IRQ>  [<ffffffff810a6e2b>] __report_bad_irq.clone.1+0x3d/0x8b
[ 2052.114349]  [<ffffffff810a6f93>] note_interrupt+0x11a/0x17f
[ 2052.114352]  [<ffffffff810a7a73>] handle_fasteoi_irq+0xa8/0xce
[ 2052.114355]  [<ffffffff8100c2ea>] handle_irq+0x88/0x90
[ 2052.114357]  [<ffffffff8146f034>] do_IRQ+0x5c/0xb4
[ 2052.114360]  [<ffffffff81469593>] ret_from_intr+0x0/0x11
[ 2052.114361]  <EOI>  [<ffffffff8102b7f9>] ? native_safe_halt+0xb/0xd
[ 2052.114366]  [<ffffffff81010f03>] ? need_resched+0x23/0x2d
[ 2052.114367]  [<ffffffff8101102a>] default_idle+0x34/0x4f
[ 2052.114370]  [<ffffffff81008325>] cpu_idle+0xaa/0xcc
[ 2052.114373]  [<ffffffff81461f2a>] start_secondary+0x24d/0x28e
[ 2052.114374] handlers:
[ 2052.114375] [<ffffffff81332944>] (usb_hcd_irq+0x0/0x7c)
[ 2052.114378] [<ffffffffa00697da>] (rt2800pci_interrupt+0x0/0x18d [rt2800pci])
[ 2052.114384] Disabling IRQ #17

Resolve:
https://bugzilla.redhat.com/show_bug.cgi?id=658451

Reported-and-tested-by: Amir Hedayaty <hedayaty@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

8 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Thu, 17 Nov 2011 19:15:47 +0000]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless into for-davem

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Thu, 17 Nov 2011 17:28:54 +0000]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] hpsa: Disable ASPM
  [SCSI] aacraid: controller hangs if kernel uses non-default ASPM policy
  [SCSI] mpt2sas: add missing allocation.
  [SCSI] Silencing 'killing requests for dead queue'
  [SCSI] fix WARNING: at drivers/scsi/scsi_lib.c:1704

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Thu, 17 Nov 2011 17:13:37 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix the connection selection of ADCs on Cirrus codecs
  ALSA: hda - Update URLs in document
  ALSA: hda - move eld->spk_alloc fixup to hdmi_update_eld()
  ALSA: hda - delayed ELD repoll
  ALSA: hda - fix ELD memory leak
  ALSA: hda/realtek: remove redundant semicolon
  ALSA: hda - pwr_nids cleanup for IDT codecs

8 years agoARM: wire up process_vm_writev and process_vm_readv syscalls
Russell King [Thu, 17 Nov 2011 16:58:00 +0000]
ARM: wire up process_vm_writev and process_vm_readv syscalls

These two syscalls were introduced during the last merge window.
Add the entries into the ARM call tables for them.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

8 years agoRevert "KVM: PPC: Add support for explicit HIOR setting"
Alexander Graf [Thu, 17 Nov 2011 14:26:35 +0000]
Revert "KVM: PPC: Add support for explicit HIOR setting"

This reverts commit a15bd354f083f20f257db450488db52ac27df439.

It exceeded the padding on the SREGS struct, rendering the ABI
backwards-incompatible.

Conflicts:

arch/powerpc/kvm/powerpc.c
include/linux/kvm.h

Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agoKVM: VMX: Check for automatic switch msr table overflow
Gleb Natapov [Wed, 5 Oct 2011 12:01:24 +0000]
KVM: VMX: Check for automatic switch msr table overflow

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agoKVM: VMX: Add support for guest/host-only profiling
Gleb Natapov [Wed, 5 Oct 2011 12:01:23 +0000]
KVM: VMX: Add support for guest/host-only profiling

Support guest/host-only profiling by switch perf msrs on
a guest entry if needed.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agoKVM: VMX: add support for switching of PERF_GLOBAL_CTRL
Gleb Natapov [Wed, 5 Oct 2011 12:01:22 +0000]
KVM: VMX: add support for switching of PERF_GLOBAL_CTRL

Some cpus have special support for switching PERF_GLOBAL_CTRL msr.
Add logic to detect if such support exists and works properly and extend
msr switching code to use it if available. Also extend number of generic
msr switching entries to 8.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agoKVM: s390: announce SYNC_MMU
Christian Borntraeger [Thu, 17 Nov 2011 10:00:44 +0000]
KVM: s390: announce SYNC_MMU

KVM on s390 always had a sync mmu. Any mapping change in userspace
mapping was always reflected immediately in the guest mapping.
- In older code the guest mapping was just an offset
- In newer code the last level page table is shared

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agoKVM: s390: Fix tprot locking
Christian Borntraeger [Thu, 17 Nov 2011 10:00:43 +0000]
KVM: s390: Fix tprot locking

There is a potential host deadlock in the tprot intercept handling.
We must not hold the mmap semaphore while resolving the guest
address. If userspace is remapping, then the memory detection in
the guest is broken anyway so we can safely separate the
address translation from walking the vmas.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agoKVM: s390: handle SIGP sense running intercepts
Cornelia Huck [Thu, 17 Nov 2011 10:00:42 +0000]
KVM: s390: handle SIGP sense running intercepts

SIGP sense running may cause an intercept on higher level
virtualization, so handle it by checking the CPUSTAT_RUNNING flag.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agoKVM: s390: Fix RUNNING flag misinterpretation
Cornelia Huck [Thu, 17 Nov 2011 10:00:41 +0000]
KVM: s390: Fix RUNNING flag misinterpretation

CPUSTAT_RUNNING was implemented signifying that a vcpu is not stopped.
This is not, however, what the architecture says: RUNNING should be
set when the host is acting on the behalf of the guest operating
system.

CPUSTAT_RUNNING has been changed to be set in kvm_arch_vcpu_load()
and to be unset in kvm_arch_vcpu_put().

For signifying stopped state of a vcpu, a host-controlled bit has
been used and is set/unset basically on the reverse as the old
CPUSTAT_RUNNING bit (including pushing it down into stop handling
proper in handle_stop()).

Cc: stable@kernel.org
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 17 Nov 2011 13:46:26 +0000]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Fix irqfixup, irqpoll regression

8 years agofix typo/thinko in get_random_bytes()
Luck, Tony [Wed, 16 Nov 2011 18:50:56 +0000]
fix typo/thinko in get_random_bytes()

If there is an architecture-specific random number generator we use it
to acquire randomness one "long" at a time.  We should put these random
words into consecutive words in the result buffer - not just overwrite
the first word again and again.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoplatform/x86: fix dell-laptop function prototypes
Randy Dunlap [Thu, 17 Nov 2011 02:20:51 +0000]
platform/x86: fix dell-laptop function prototypes

Fix build warnings:
  drivers/platform/x86/dell-laptop.c:592:13: warning: function declaration isn't a prototype
  drivers/platform/x86/dell-laptop.c:599:13: warning: function declaration isn't a prototype

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agomedia/staging: fix allyesconfig build error
Randy Dunlap [Thu, 17 Nov 2011 02:17:03 +0000]
media/staging: fix allyesconfig build error

Fix x86 allyesconfig builds.  Builds fail due to a non-static variable
named 'debug' in drivers/staging/media/as102:

  arch/x86/built-in.o:arch/x86/kernel/entry_32.S:1296: first defined here
  ld: Warning: size of symbol `debug' changed from 90 in arch/x86/built-in.o to 4 in drivers/built-in.o

Thou shalt have no non-static identifiers that are named 'debug'.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Pierrick Hascoet <pierrick.hascoet@abilis.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agohwmon: (exynos4_tmu) Fix Kconfig dependency
Donggeun Kim [Thu, 17 Nov 2011 10:33:05 +0000]
hwmon: (exynos4_tmu) Fix Kconfig dependency

Rename dependency of EXYNOS4_TMU in Kconfig to the existing one.

Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>

8 years agostmmac: fix pm functions avoiding sleep on spinlock
Francesco Virlinzi [Wed, 16 Nov 2011 21:58:02 +0000]
stmmac: fix pm functions avoiding sleep on spinlock

This patch fixes the pm functions to avoid the system
sleeps while a spinlock is taken.

Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agostmmac: remove spin_lock in stmmac_ioctl.
Srinivas Kandagatla [Wed, 16 Nov 2011 21:58:01 +0000]
stmmac: remove spin_lock in stmmac_ioctl.

This patch removes un-needed spin_lock in stmmac_ioctl while reading and
writing mdio registers. While holding spin_lock the code must be
atomic, which is not true in this case as both mdiobus_read and writes
have mutex locks.

Without this patch reading mdio registers via mii-tool results in below
BUG:
mii-tool -vvv eth0"
Using SIOCGMIIPHY=0x8947
BUG: sleeping function called from invalid context at kernel/mutex.c:287
in_atomic(): 1, irqs_disabled(): 0, pid: 614, name: mii-tool
2 locks held by mii-tool/614:
 #0:  (rtnl_mutex){......}, at: [<c01fd80c>] dev_ioctl+0x550/0x674
 #1:  (&priv->lock){......}, at: [<c01b34ec>] stmmac_ioctl+0x4c/0x78
[<c002ea14>] (unwind_backtrace+0x0/0xcc) from [<c0272c38>]
(mutex_lock_nested+0x24/0x35c)
[<c0272c38>] (mutex_lock_nested+0x24/0x35c) from [<c01b237c>]
(mdiobus_read+0x44/0x70)
[<c01b237c>] (mdiobus_read+0x44/0x70) from [<c01b0c64>]
(phy_mii_ioctl+0x4c/0x138)
[<c01b0c64>] (phy_mii_ioctl+0x4c/0x138) from [<c01b34fc>]
(stmmac_ioctl+0x5c/0x78)
[<c01b34fc>] (stmmac_ioctl+0x5c/0x78) from [<c01fcec8>]
(dev_ifsioc+0x2a4/0x2c8)
[<c01fcec8>] (dev_ifsioc+0x2a4/0x2c8) from [<c01fd81c>]
(dev_ioctl+0x560/0x674)
[<c01fd81c>] (dev_ioctl+0x560/0x674) from [<c00c36e0>]
(vfs_ioctl+0x2c/0x8c)
[<c00c36e0>] (vfs_ioctl+0x2c/0x8c) from [<c00c4130>]
(do_vfs_ioctl+0x530/0x578)
[<c00c4130>] (do_vfs_ioctl+0x530/0x578) from [<c00c41ac>]
(sys_ioctl+0x34/0x54)
[<c00c41ac>] (sys_ioctl+0x34/0x54) from [<c0028aa0>]
(ret_fast_syscall+0x0/0x2c)

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agostmmac: parameters auto-tuning through HW cap reg
Giuseppe CAVALLARO [Wed, 16 Nov 2011 21:58:00 +0000]
stmmac: parameters auto-tuning through HW cap reg

New GMAC devices (newer than the databook 3.50a) have the
HW capability register that provides which features are actually
supported by the hardware.

On old devices many information have to be passed through the
platform, for example: enhanced descriptor structure,
TX COE etc. These are mandatory to properly configure the driver.
This remains still valid because the driver has to support old
Synopsys devices but now it's also able to override them using the
values from the HW capability register if supported.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agostmmac: fix advertising 1000Base capabilties for non GMII iface
Srinivas Kandagatla [Wed, 16 Nov 2011 21:57:59 +0000]
stmmac: fix advertising 1000Base capabilties for non GMII iface

This patch fixes the way to stop the 1000Base advertising
capabilties for non GMII interfaces.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agostmmac: use mdelay on timeout of sw reset
Francesco Virlinzi [Wed, 16 Nov 2011 21:57:58 +0000]
stmmac: use mdelay on timeout of sw reset

This patch uses an mdelay to manage the timeout on
sw reset to be independant of cpu_clk.

Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com>
Reviewed-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agopowerpc/signal32: Fix sigset_t conversion when copying to user
Will Deacon [Tue, 8 Nov 2011 04:51:19 +0000]
powerpc/signal32: Fix sigset_t conversion when copying to user

On PPC64, put_sigset_t converts a sigset_t to a compat_sigset_t
before copying it to userspace. There is a typo in the case that
we have 4 words to copy, meaning that we corrupt the compat_sigset_t.

It appears that _NSIG_WORDS can't be greater than 2 at the moment
so this code is probably always optimised away anyway.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

8 years agopowerpc: Fix atomic_xxx_return barrier semantics
Benjamin Herrenschmidt [Tue, 15 Nov 2011 17:11:27 +0000]
powerpc: Fix atomic_xxx_return barrier semantics

The Documentation/memory-barriers.txt document requires that atomic
operations that return a value act as a memory barrier both before
and after the actual atomic operation.

Our current implementation doesn't guarantee this. More specifically,
while a load following the isync can not be issued before stwcx. has
completed, that completion doesn't architecturally means that the
result of stwcx. is visible to other processors (or any previous stores
for that matter) (typically, the other processors L1 caches can still
hold the old value).

This has caused an actual crash in RCU torture testing on Power 7

This fixes it by changing those atomic ops to use new macros instead
of RELEASE/ACQUIRE barriers, called ATOMIC_ENTRY and ATMOIC_EXIT barriers,
which are then defined respectively to lwsync and sync.

I haven't had a chance to measure the performance impact (or rather
what I measured with kernel compiles is in the noise, I yet have to
find a more precise benchmark)

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

8 years agopowerpc: Remove buggy 9-year-old test for binutils < 2.12.1
Kyle Moffett [Mon, 7 Nov 2011 13:30:43 +0000]
powerpc: Remove buggy 9-year-old test for binutils < 2.12.1

Recent binutils refuses to assemble AltiVec opcodes when in e500/SPE
mode, as some of those opcodes alias the "SPE" instructions.  This
triggers an ancient binutils version check even when building a kernel
with CONFIG_ALTIVEC disabled.

In theory, the check could be conditionalized on CONFIG_ALTIVEC, but in
practice it has long outlived its utility.  It is virtually impossible
to find binutils older than 2.12.1 (released 2002) in the wild anymore.
Even ancient RedHat Enterprise Linux 4 has binutils-2.14.

To fix the kernel build when done natively on e500 systems with this new
binutils, the test is simply removed.

Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

8 years agopowerpc/book3e-64: Fix debug support for userspace
Kumar Gala [Thu, 6 Oct 2011 02:53:40 +0000]
powerpc/book3e-64: Fix debug support for userspace

With the introduction of CONFIG_PPC_ADV_DEBUG_REGS user space debug is
broken on Book-E 64-bit parts that support delayed debug events.  When
switch_booke_debug_regs() sets DBCR0 we'll start getting debug events as
MSR_DE is also set and we aren't able to handle debug events from kernel
space.

We can remove the hack that always enables MSR_DE and loads up DBCR0 and
just utilize switch_booke_debug_regs() to get user space debug working
again.

We still need to handle critical/debug exception stacks & proper
save/restore of state for those exception levles to support debug events
from kernel space like we have on 32-bit.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

8 years agopowerpc: Remove extraneous CONFIG_PPC_ADV_DEBUG_REGS define
Kumar Gala [Thu, 6 Oct 2011 02:53:39 +0000]
powerpc: Remove extraneous CONFIG_PPC_ADV_DEBUG_REGS define

All of DebugException is already protected by CONFIG_PPC_ADV_DEBUG_REGS
there is no need to have another such ifdef inside the function.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

8 years agopowerpc: Revert show_regs() define for readability
Kumar Gala [Thu, 6 Oct 2011 02:53:38 +0000]
powerpc: Revert show_regs() define for readability

We had an existing ifdef for 4xx & BOOKE processors that got changed to
CONFIG_PPC_ADV_DEBUG_REGS.  The define has nothing to do with
CONFIG_PPC_ADV_DEBUG_REGS.  The define really should be:

 #if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)

and not

 #ifdef CONFIG_PPC_ADV_DEBUG_REGS

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

8 years agonew helper: mount_subtree()
Al Viro [Thu, 17 Nov 2011 02:43:59 +0000]
new helper: mount_subtree()

takes vfsmount and relative path, does lookup within that vfsmount
(possibly triggering automounts) and returns the result as root
of subtree suitable for return by ->mount() (i.e. a reference to
dentry and an active reference to its superblock grabbed, superblock
locked exclusive).

btrfs and nfs switched to it instead of open-coding the sucker.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

8 years agosky2: version 1.30
stephen hemminger [Wed, 16 Nov 2011 13:43:00 +0000]
sky2: version 1.30

Update version number.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosky2: used fixed RSS key
stephen hemminger [Wed, 16 Nov 2011 13:42:59 +0000]
sky2: used fixed RSS key

Rather than generating a different RSS key on each boot, just use
a predetermined value that will map same flow to same value on
every device.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosky2: reduce default Tx ring size
stephen hemminger [Wed, 16 Nov 2011 13:42:58 +0000]
sky2: reduce default Tx ring size

The default Tx ring size for the sky2 driver is quite large and could
cause excess buffer bloat for many users. The minimum ring size
possible and still allow handling  the worst case packet on 64bit platforms
is 38 which gets rounded up to a power of 2. But most packets only require
a couple of ring elements.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosky2: rename up/down functions
stephen hemminger [Wed, 16 Nov 2011 13:42:57 +0000]
sky2: rename up/down functions

The code is clearer if the up/down functions are renamed to
open/close like other drivers.  Purely syntax change.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosky2: pci posting issues
stephen hemminger [Wed, 16 Nov 2011 13:42:56 +0000]
sky2: pci posting issues

A couple of the reset and setup paths have possible PCI posting issues.
When setting registers, a read is necessary to force the writes to complete.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agosky2: fix hang on shutdown (and other irq issues)
stephen hemminger [Wed, 16 Nov 2011 13:42:55 +0000]
sky2: fix hang on shutdown (and other irq issues)

There are several problems with recent change to how IRQ's are setup.
   * synchronize_irq in sky2_shutdown would hang because there
     was no IRQ setup.
   * when device was set to down, some IRQ bits left enabled so a
     hardware error would produce IRQ with no handler
   * quick link on Optima chip set was enabled without handler
   * suspend/resume would leave IRQ on with no handler if device
     was down

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agor6040: fix check against MCRO_HASHEN bit in r6040_multicast_list
Florian Fainelli [Wed, 16 Nov 2011 06:00:08 +0000]
r6040: fix check against MCRO_HASHEN bit in r6040_multicast_list

We are checking whether the MCR0_HASHEN bit is set using a logical and
instead of bitwise and, fix that.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agorandom: Fix handing of arch_get_random_long in get_random_bytes()
Luck, Tony [Wed, 16 Nov 2011 18:50:56 +0000]
random: Fix handing of arch_get_random_long in get_random_bytes()

If there is an architecture-specific random number generator we use
it to acquire randomness one "long" at a time. We should put these
random words into consecutive words in the result buffer - not just
overwrite the first word again and again.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/4ec4061010261a4cb0@agluck-desktop.sc.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

8 years agoMAINTAINERS: change email address for shemminger
Stephen Hemminger [Wed, 16 Nov 2011 22:58:46 +0000]
MAINTAINERS: change email address for shemminger

My old email account at linux-foundation is no longer usable after
the LF breakin.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agopch_gbe: Move #include of module.h
Joe Perches [Tue, 15 Nov 2011 13:56:14 +0000]
pch_gbe: Move #include of module.h

The first #include must be pch_gbe.h as it
does a #define of pr_fmt.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agobnx2x: cache-in compressed fw image
Dmitry Kravkov [Tue, 15 Nov 2011 12:07:33 +0000]
bnx2x: cache-in compressed fw image

Re-request fw from fs may fail for different reasons, once the fw was
loaded we won't release it until driver is removed.

This also resolves the boot problem when initial fw is located on initrd,
but rootfs is still unavailable, in this case device reset will fail due
to absence of fw files.

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agonet/cadence: enable by default NET_ATMEL
Jean-Christophe PLAGNIOL-VILLARD [Tue, 15 Nov 2011 09:36:30 +0000]
net/cadence: enable by default NET_ATMEL

so the defconfig of the atmel continue to have the support of the network
as before

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agobridge: correct IPv6 checksum after pull
stephen hemminger [Tue, 15 Nov 2011 08:09:14 +0000]
bridge: correct IPv6 checksum after pull

Bridge multicast snooping of ICMPv6 would incorrectly report a checksum problem
when used with Ethernet devices like sky2 that use CHECKSUM_COMPLETE.
When bytes are removed from skb, the computed checksum needs to be adjusted.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Tested-by: Martin Volf <martin.volf.42@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8 years agoqeth: Reduce CPU consumption through less SIGA-r calls
Einar Lueck [Tue, 15 Nov 2011 02:31:16 +0000]
qeth: Reduce CPU consumption through less SIGA-r calls

Patch avoids SIGA-r calls in case of SIGA-r required. It only calls
SIGA-r if a threshold of free buffer is reached. CPU consumption is
reduced as a consequence.

Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>