Commit Graph

253929 Commits

Author SHA1 Message Date
Linus Torvalds d9cbf022bb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  Revert "HID: magicmouse: ignore 'ivalid report id' while switching modes"
  HID: hid-multitouch: fix broken eGalax
  HID: MAINTAINERS: Update USB HID/HIDBP DRIVERS pattern
  HID: hid-multitouch: add support for Chunghwa multi-touch panel
  HID: hiddev: fix use after free in hiddev_release
  HID: add quirk for HyperPen 10000U
  HID: hiddev: fix potential use-after-free
2011-06-17 10:37:01 -07:00
Chris Mason 7585717f30 Btrfs: fix relocation races
The recent commit to get rid of our trans_mutex introduced
some races with block group relocation.  The problem is that relocation
needs to do some record keeping about each root, and it was relying
on the transaction mutex to coordinate things in subtle ways.

This fix adds a mutex just for the relocation code and makes sure
it doesn't have a big impact on normal operations.  The race is
really fixed in btrfs_record_root_in_trans, which is where we
step back and wait for the relocation code to finish accounting
setup.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-06-17 13:36:58 -04:00
Linus Torvalds 0835619348 Merge branches 'gpio/merge' and 'spi/merge' of git://git.secretlab.ca/git/linux-2.6
* 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6:
  gpio: add GPIOF_ values regardless on kconfig settings
  gpio: include linux/gpio.h where needed
  gpio/omap4: Fix missing interrupts during device wakeup due to IOPAD.

* 'spi/merge' of git://git.secretlab.ca/git/linux-2.6:
  spi/bfin_spi: fix handling of default bits per word setting
2011-06-17 10:36:32 -07:00
Linus Torvalds add794467a Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  OMAP1: PM: register notifiers with generic clock ops even when !PM_RUNTIME
  omap: pandora: fix NAND support
  OMAP: PM: omap_device: fix device power domain callbacks
  OMAP: PM debug: fix section mismatch warnings
2011-06-17 10:35:31 -07:00
David Howells 879669961b KEYS/DNS: Fix ____call_usermodehelper() to not lose the session keyring
____call_usermodehelper() now erases any credentials set by the
subprocess_inf::init() function.  The problem is that commit
17f60a7da1 ("capabilites: allow the application of capability limits
to usermode helpers") creates and commits new credentials with
prepare_kernel_cred() after the call to the init() function.  This wipes
all keyrings after umh_keys_init() is called.

The best way to deal with this is to put the init() call just prior to
the commit_creds() call, and pass the cred pointer to init().  That
means that umh_keys_init() and suchlike can modify the credentials
_before_ they are published and potentially in use by the rest of the
system.

This prevents request_key() from working as it is prevented from passing
the session keyring it set up with the authorisation token to
/sbin/request-key, and so the latter can't assume the authority to
instantiate the key.  This causes the in-kernel DNS resolver to fail
with ENOKEY unconditionally.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Eric Paris <eparis@redhat.com>
Tested-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-17 09:40:48 -07:00
John W. Linville 82362ccbf2 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 into for-davem 2011-06-17 12:40:36 -04:00
Mike Frysinger e479c60456 spi/bfin_spi: fix handling of default bits per word setting
The default bits per word setting should be 8 bits, but since most of our
devices have been explicitly setting this up, we didn't notice when the
default stopped working.

At the moment, any default transfers without an explicit bit size setting
error out with:
bfin-spi bfin-spi.0: transfer: unsupported bits_per_word

So in the transfer logic, have a bits_per_word setting of 0 fall into the
8 bit transfer logic.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-17 08:27:27 -06:00
Takashi Iwai ad2409413d ALSA: hda - Fix no NID error with VIA codecs
The via driver spews warnigs like
	hda-codec: no NID for mapping control Independent HP:0:0
with some codecs because snd_hda_add_nid() is called with nid=0.
This patch fixes it by skipping the call when no corresponding widget
is found.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-17 14:23:46 +02:00
Clemens Ladisch cf6f1ff17f ALSA: isight: adjust for new queueing API
Since commit 13882a82ee (optimize iso queueing by setting
wake only after the last packet), drivers are required to call
fw_iso_context_queue_flush() after queueing a batch of packets.
The missing call would have an effect only if the controller
queue underruns, but then the DMA would stop completely.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-17 11:37:29 +02:00
Takao Indoh d8ad7d1123 generic-ipi: Fix kexec boot crash by initializing call_single_queue before enabling interrupts
There is a problem that kdump(2nd kernel) sometimes hangs up due
to a pending IPI from 1st kernel. Kernel panic occurs because IPI
comes before call_single_queue is initialized.

To fix the crash, rename init_call_single_data() to call_function_init()
and call it in start_kernel() so that call_single_queue can be
initialized before enabling interrupts.

The details of the crash are:

 (1) 2nd kernel boots up

 (2) A pending IPI from 1st kernel comes when irqs are first enabled
     in start_kernel().

 (3) Kernel tries to handle the interrupt, but call_single_queue
     is not initialized yet at this point. As a result, in the
     generic_smp_call_function_single_interrupt(), NULL pointer
     dereference occurs when list_replace_init() tries to access
     &q->list.next.

Therefore this patch changes the name of init_call_single_data()
to call_function_init() and calls it before local_irq_enable()
in start_kernel().

Signed-off-by: Takao Indoh <indou.takao@jp.fujitsu.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Milton Miller <miltonm@bga.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: kexec@lists.infradead.org
Link: http://lkml.kernel.org/r/D6CBEE2F420741indou.takao@jp.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-06-17 10:17:12 +02:00
Sonic Zhang 118133e658 netdev: bfin_mac: fix memory leak when freeing dma descriptors
The size of the desc array is not the size of the desc structure, so
when we try to free up things, we leak some parts.

Reported-by: Regis Dargent <rdargent@edevice.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-17 00:19:09 -04:00
Antoine Reversat e3cb78c772 vlan: don't call ndo_vlan_rx_register on hardware that doesn't have vlan support
This patch removes the call to ndo_vlan_rx_register if the underlying
device doesn't have hardware support for VLAN.
Signed-off-by: Antoine Reversat <a.reversat@gmail.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-17 00:12:51 -04:00
sjur.brandeland@stericsson.com a1b7f85e4f caif: Bugfix - XOFF removed channel from caif-mux
XOFF was mixed up with DOWN indication, causing causing CAIF channel to be
removed from mux and all incoming traffic to be lost after receiving flow-off.
Fix this by replacing FLOW_OFF with DOWN notification.

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:59:09 -04:00
Neil Horman bebd097a0a tun: teach the tun/tap driver to support netpoll
Commit 8d8fc29d02 changed the behavior of slave
devices in regards to netpoll.  Specifically it created a mutually exclusive
relationship between being a slave and a netpoll-capable device.  This creates
problems for KVM because guests relied on needing netconsole active on a slave
device to a bridge.  Ideally libvirtd could just attach netconsole to the bridge
device instead, but thats currently infeasible, because while the bridge device
supports netpoll, it requires that all slave interface also support it, but the
tun/tap driver currently does not.  The most direct solution is to teach tun/tap
to support netpoll, which is implemented by the patch below.

I've not tested this yet, but its pretty straightforward.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Rik van Riel <riel@redhat.com>
CC: Rik van Riel <riel@redhat.com>
CC: Maxim Krasnyansky <maxk@qualcomm.com>
CC: Cong Wang <amwang@redhat.com>
CC: "David S. Miller" <davem@davemloft.net>
Reviewed-by: Rik van Riel <riel@redhat.com>
Tested-by: Rik van Riel <riel@redhat.com>
Reviewed-by: WANG Cong <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:53:10 -04:00
Richard Cochran ae6e86b7fb dp83640: drop PHY status frames in the driver.
The dp83640 PHY provides time stamp and other information via special
PHY status frames. Previously, the driver decoded the frames and then
let the network stack drop them. This works fine when the PTP messages
come over UDP.

However, when receiving PTP messages via L2 packets, this creates a
problem. The status frames use the official PTP destination MAC address,
and so they are delivered to user space along with the "real" frames,
causing confusion for applications.

This commit fixes the issue by simply dropping the PHY status frames
in the driver.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:48:12 -04:00
Richard Cochran 2331038a96 dp83640: fix phy status frame event parsing
If two eternal time stamp events occur at nearly the same time, the
phyter will add an extra word into the status frame. This commit fixes
the parsing code to recognize and skip over the extra word.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:48:12 -04:00
Ralf Baechle f1dc045e68 phylib: Allow BCM63XX PHY to be selected only on BCM63XX.
This PHY is available integrated into BCM63xx series SOCs only.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 drivers/net/phy/Kconfig |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
Acked-by: Florian Fainelli <ffainelli@freebox.fr>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:45:01 -04:00
Changli Gao e6539e2b7a ppp: use PPP_TRANS instead of the magic number 0x20
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:43:55 -04:00
Joe Perches d3ab6fde14 MAINTAINERS: Update EBTABLES mailing list
It moved to netfilter-devel@vger.kernel.org.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:27:49 -04:00
Fernando Luis Vázquez Cao fc2af6c73f IGMP snooping: set mrouters_only flag for IPv6 traffic properly
Upon reception of a MGM report packet the kernel sets the mrouters_only flag
in a skb that is a clone of the original skb, which means that the bridge
loses track of MGM packets (cb buffers are tied to a specific skb and not
shared) and it ends up forwading join requests to the bridge interface.

This can cause unexpected membership timeouts and intermitent/permanent loss
of connectivity as described in RFC 4541 [2.1.1. IGMP Forwarding Rules]:

    A snooping switch should forward IGMP Membership Reports only to
    those ports where multicast routers are attached.
    [...]
    Sending membership reports to other hosts can result, for IGMPv1
    and IGMPv2, in unintentionally preventing a host from joining a
    specific multicast group.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:14:13 -04:00
Fernando Luis Vázquez Cao 62b2bcb49c IGMP snooping: set mrouters_only flag for IPv4 traffic properly
Upon reception of a IGMP/IGMPv2 membership report the kernel sets the
mrouters_only flag in a skb that may be a clone of the original skb, which
means that sometimes the bridge loses track of membership report packets (cb
buffers are tied to a specific skb and not shared) and it ends up forwading
join requests to the bridge interface.

This can cause unexpected membership timeouts and intermitent/permanent loss
of connectivity as described in RFC 4541 [2.1.1. IGMP Forwarding Rules]:

    A snooping switch should forward IGMP Membership Reports only to
    those ports where multicast routers are attached.
    [...]
    Sending membership reports to other hosts can result, for IGMPv1
    and IGMPv2, in unintentionally preventing a host from joining a
    specific multicast group.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Tested-by: Hayato Kakuta <kakuta.hayato@oss.ntt.co.jp>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 23:14:12 -04:00
Marius B. Kotsbak d40261236e net/usb: Add Samsung Kalmia driver for Samsung GT-B3730
Introducing driver for the network port of Samsung Kalmia based USB LTE modems.
It has also an ACM interface that previous patches associates with the "option"
module. To access those interfaces, the modem must first be switched from modem
mode using a tool like usb_modeswitch.

As the proprietary protocol has been discovered by watching the MS Windows driver
behavior, there might be errors in the protocol handling, but stable and fast
connection has been established for hours with Norwegian operator NetCom that
distributes this modem with their LTE/4G subscription.

More and updated information about how to use this driver is available here:

http://www.draisberghof.de/usb_modeswitch/bb/viewtopic.php?t=465
https://github.com/mkotsbak/Samsung-GT-B3730-linux-driver

Signed-off-by: Marius B. Kotsbak <marius@kotsbak.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-16 21:57:49 -04:00
David S. Miller 3009adf5ac Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6 2011-06-16 21:38:01 -04:00
Linus Torvalds eb96c92515 Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: use helper functions for fence read/write
  drm/radeon/kms: set DP link config properly for DP bridges
  drm/radeon/kms/atom: AdjustPixelClock fixes for DP bridges
  drm/radeon/kms: fix handling of DP to LVDS bridges
  drm/radeon/kms: issue blank/unblank commands for ext encoders
  drm/radeon/kms: fix support for DDC on dp bridges
  drm/radeon/kms: add support for load detection on dp bridges
  drm/radeon/kms: add missing external encoder action
  drm/radeon/kms: rework atombios_get_encoder_mode()
  drm/radeon/kms: fix num crtcs for Cedar and Caicos
  Revert "drm/i915: Enable GMBUS for post-gen2 chipsets"
  drivers/gpu/drm: use printk_ratelimited instead of printk_ratelimit
  drm/radeon: workaround a hw bug on some radeon chipsets with all-0 EDIDs.
  drm: make debug levels match in edid failure code.
  drm/radeon/kms: clear wb memory by default
  drm/radeon/kms: be more pedantic about the g5 quirk (v2)
  drm/radeon/kms: signed fix for evergreen thermal
  drm: populate irq_by_busid-member for pci
2011-06-16 17:54:41 -07:00
Alex Deucher b81157d016 drm/radeon/kms: use helper functions for fence read/write
The existing code assumed scratch registers in a number
of places while in most cases we are be using writeback
and events rather than scratch registers.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:30:04 +10:00
Alex Deucher 11b0a5b89a drm/radeon/kms: set DP link config properly for DP bridges
DP clock and lanes were not set properly for DP bridges.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:28:11 +10:00
Alex Deucher cc9f67a0a0 drm/radeon/kms/atom: AdjustPixelClock fixes for DP bridges
Need to set the external transmitter type properly in
AdjustPixelClock to get the properly output.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:28:10 +10:00
Alex Deucher f89931f345 drm/radeon/kms: fix handling of DP to LVDS bridges
They need to be treated like eDP rather than DP.

May fix:
https://bugzilla.kernel.org/show_bug.cgi?id=34822

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:28:07 +10:00
Alex Deucher d6c669528a drm/radeon/kms: issue blank/unblank commands for ext encoders
Required for DPMS on some systems.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:28:05 +10:00
Alex Deucher 591a10e16c drm/radeon/kms: fix support for DDC on dp bridges
Need to set up the bridge for DDC prior to the
i2c over aux transaction.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:28:03 +10:00
Alex Deucher d629a3ceb4 drm/radeon/kms: add support for load detection on dp bridges
dp to vga bridges for example.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:28:02 +10:00
Alex Deucher 7ec478f835 drm/radeon/kms: add missing external encoder action
required for ddc.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:28:01 +10:00
Alex Deucher fbb8777365 drm/radeon/kms: rework atombios_get_encoder_mode()
This should give us more reliable results if the table
is called before an active device is set.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:27:59 +10:00
Alex Deucher ba7e05e958 drm/radeon/kms: fix num crtcs for Cedar and Caicos
Only support 4 rather than 6.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:24:29 +10:00
Jean Delvare 826c7e4147 Revert "drm/i915: Enable GMBUS for post-gen2 chipsets"
Revert commit 8f9a3f9b63. This fixes a
hang when loading the eeprom driver (see bug #35572.) GMBUS will be
re-enabled later, differently.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Reported-by: Marek Otahal <markotahal@gmail.com>
Tested-by: Yermandu Patapitafious <yermandu.dev@gmail.com>
Tested-by: Andrew Lutomirski <luto@mit.edu>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-17 09:22:01 +10:00
Paul E. McKenney f8b7fc6b51 rcu: Move RCU_BOOST #ifdefs to header file
The commit "use softirq instead of kthreads except when RCU_BOOST=y"
just applied #ifdef in place.  This commit is a cleanup that moves
the newly #ifdef'ed code to the header file kernel/rcutree_plugin.h.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2011-06-16 16:12:05 -07:00
Linus Torvalds 8b97b21e0f Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfd
* git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/linux-2.6-nsfd:
  proc: Fix Oops on stat of /proc/<zombie pid>/ns/net
2011-06-16 15:02:20 -07:00
Andrea Arcangeli 99a15e21d9 migrate: don't account swapcache as shmem
swapcache will reach the below code path in migrate_page_move_mapping,
and swapcache is accounted as NR_FILE_PAGES but it's not accounted as
NR_SHMEM.

Hugh pointed out we must use PageSwapCache instead of comparing
mapping to &swapper_space, to avoid build failure with CONFIG_SWAP=n.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-16 15:01:24 -07:00
Konrad Rzeszutek Wilk fbb5b89eab [CPUFREQ] powernow-k8: Don't try to transition if the pstate is incorrect
This patch augments the pstate transition code to error out
(instead of returning 0) when an incorrect pstate is provided.

Suggested-by: Borislav Petkov <bp@alien8.de>
CC: andre.przywara@amd.com
CC: Mark.Langsdorf@amd.com
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2011-06-16 16:31:13 -04:00
Konrad Rzeszutek Wilk a9d3d20680 [CPUFREQ] powernow-k8: Don't notify of successful transition if we failed (vid case).
Before this patch if we failed the vid transition would still try to
submit the "new" frequencies to cpufreq.
That is incorrect - also we could submit a non-existing frequency value
which would cause cpufreq to crash. The ultimate fix is in cpufreq
to deal with incorrect values, but this patch improves the error
recovery in the AMD powernowk8 driver.

The failure that was reported was as follows:

powernow-k8: Found 1 AMD Athlon(tm) 64 Processor 3700+ (1 cpu cores) (version 2.20.00)
powernow-k8: fid 0x2 (1000 MHz), vid 0x12
powernow-k8: fid 0xa (1800 MHz), vid 0xa
powernow-k8: fid 0xc (2000 MHz), vid 0x8
powernow-k8: fid 0xe (2200 MHz), vid 0x8
Marking TSC unstable due to cpufreq changes
powernow-k8: fid trans failed, fid 0x2, curr 0x0
BUG: unable to handle kernel paging request at ffff880807e07b78
IP: [<ffffffff81479163>] cpufreq_stats_update+0x46/0x5b
...

And transition fails and data->currfid ends up with 0. Since
the machine does not support 800Mhz value when the calculation is
done ('find_khz_freq_from_fid(data->currfid);') it reports the
new frequency as 800000 which is bogus. This patch fixes
the issue during target setting.

The patch however does not fix the issue in 'powernowk8_cpu_init'
where the pol->cur can also be set with the 800000 value:

          pol->cur = find_khz_freq_from_fid(data->currfid);
  dprintk("policy current frequency %d kHz\n", pol->cur);

  /* min/max the cpu is capable of */
  if (cpufreq_frequency_table_cpuinfo(pol, data->powernow_table)) {

The fix for that looks to update cpufreq_frequency_table_cpuinfo to
check pol->cur.... but that would cause an regression in how the
acpi-cpufreq driver works (it sets cpu->cur after calling
cpufreq_frequency_table_cpuinfo). Instead the fix will be to let
cpufreq gracefully handle bogus data (another patch).

Acked-by: Borislav Petkov <bp@alien8.de>
CC: andre.przywara@amd.com
CC: Mark.Langsdorf@amd.com
Reported-by: Tobias Diedrich <ranma+xen@tdiedrich.de>
Tested-by: Tobias Diedrich <ranma+xen@tdiedrich.de>
[v1: Rebased on v3.0-rc2, reduced patch to deal with vid case]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2011-06-16 16:31:13 -04:00
Konrad Rzeszutek Wilk 46a310b80b [CPUFREQ] Don't set stat->last_index to -1 if the pol->cur has incorrect value.
If the driver submitted an non-existing pol>cur value (say it
used the default initialized value of zero), when the cpufreq
stats tries to setup its initial values it incorrectly sets
stat->last_index to -1 (or 0xfffff...). And cpufreq_stats_update
tries to update at that index location and fails.

This can be caused by:

stat->last_index = freq_table_get_index(stat, policy->cur);

not finding the appropiate frequency in the table (b/c the policy->cur
is wrong) and we end up crashing. The fix however is
concentrated in the 'cpufreq_stats_update' as the last_index
(and old_index) are updated there. Which means it can reset
the last_index to -1 again and on the next iteration cause a crash.

Without this patch, the following crash is observed:

powernow-k8: Found 1 AMD Athlon(tm) 64 Processor 3700+ (1 cpu cores) (version 2.20.00)
powernow-k8: fid 0x2 (1000 MHz), vid 0x12
powernow-k8: fid 0xa (1800 MHz), vid 0xa
powernow-k8: fid 0xc (2000 MHz), vid 0x8
powernow-k8: fid 0xe (2200 MHz), vid 0x8
Marking TSC unstable due to cpufreq changes
powernow-k8: fid trans failed, fid 0x2, curr 0x0
BUG: unable to handle kernel paging request at ffff880807e07b78
IP: [<ffffffff81479163>] cpufreq_stats_update+0x46/0x5b
.. snip..
Pid: 1, comm: swapper Not tainted 3.0.0-rc2 #45 MICRO-STAR INTERNATIONAL CO., LTD MS-7094/MS-7094
..snip..
Call Trace:
 [<ffffffff81479248>] cpufreq_stat_notifier_trans+0x48/0x7c
 [<ffffffff81095d68>] notifier_call_chain+0x32/0x5e
 [<ffffffff81095e6b>] __srcu_notifier_call_chain+0x47/0x63
 [<ffffffff81095e96>] srcu_notifier_call_chain+0xf/0x11
 [<ffffffff81477e7a>] cpufreq_notify_transition+0x111/0x134
 [<ffffffff8147b0d4>] powernowk8_target+0x53b/0x617
 [<ffffffff8147723a>] __cpufreq_driver_target+0x2e/0x30
 [<ffffffff8147a127>] cpufreq_governor_dbs+0x339/0x356
 [<ffffffff81477394>] __cpufreq_governor+0xa8/0xe9
 [<ffffffff81477525>] __cpufreq_set_policy+0x132/0x13e
 [<ffffffff8147848d>] cpufreq_add_dev_interface+0x272/0x28c

Reported-by: Tobias Diedrich <ranma+xen@tdiedrich.de>
Tested-by: Tobias Diedrich <ranma+xen@tdiedrich.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2011-06-16 16:31:12 -04:00
Torsten Schenk 0ec5258d68 ALSA: 6fire - Fix signedness bug
Fixed remaining issues of the signedness bug discovered by Dan Carpenter.
A check was remaining that tests if unsigned rt->rate is >= 0.
Changed that so that rt->rate now consistently uses ARRAY_SIZE(rates)
as invalid rate value and not -1.

Signed-off-by: Torsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-06-16 21:31:33 +02:00
Konrad Rzeszutek Wilk acd049c6e9 xen/setup: Fix for incorrect xen_extra_mem_start.
The earlier attempts (24bdb0b62c)
at fixing this problem caused other problems to surface (PV guests
with no PCI passthrough would have SWIOTLB turned on - which meant
64MB of precious contingous DMA32 memory being eaten up per guest).
The problem was: "on xen we add an extra memory region at the end of
the e820, and on this particular machine this extra memory region
would start below 4g and cross over the 4g boundary:

[0xfee01000-0x192655000)

Unfortunately e820_end_of_low_ram_pfn does not expect an
e820 layout like that so it returns 4g, therefore initial_memory_mapping
will map [0 - 0x100000000), that is a memory range that includes some
reserved memory regions."

The memory range was the IOAPIC regions, and with the 1-1 mapping
turned on, it would map them as RAM, not as MMIO regions. This caused
the hypervisor to complain. Fortunately this is experienced only under
the initial domain so we guard for it.

Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-06-16 13:51:32 -04:00
Thomas Gleixner b5199515c2 clocksource: Make watchdog robust vs. interruption
The clocksource watchdog code is interruptible and it has been
observed that this can trigger false positives which disable the TSC.

The reason is that an interrupt storm or a long running interrupt
handler between the read of the watchdog source and the read of the
TSC brings the two far enough apart that the delta is larger than the
unstable treshold. Move both reads into a short interrupt disabled
region to avoid that.

Reported-and-tested-by: Vernon Mauery <vernux@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@kernel.org
2011-06-16 19:30:53 +02:00
Linus Torvalds 7cc2ed0589 Merge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  kbuild: Call depmod.sh via shell
  perf: clear out make flags when calling kernel make kernelver
2011-06-16 10:26:58 -07:00
Linus Torvalds 8dac6bee32 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  AFS: Use i_generation not i_version for the vnode uniquifier
  AFS: Set s_id in the superblock to the volume name
  vfs: Fix data corruption after failed write in __block_write_begin()
  afs: afs_fill_page reads too much, or wrong data
  VFS: Fix vfsmount overput on simultaneous automount
  fix wrong iput on d_inode introduced by e6bc45d65d
  Delay struct net freeing while there's a sysfs instance refering to it
  afs: fix sget() races, close leak on umount
  ubifs: fix sget races
  ubifs: split allocation of ubifs_info into a separate function
  fix leak in proc_set_super()
2011-06-16 10:21:59 -07:00
Linus Torvalds f8f44f09ea Merge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x
* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x:
  sh: sh7724: Add USBHS DMAEngine support
  sh: ecovec: Add renesas_usbhs support
  sh, exec: remove redundant set_fs(USER_DS)
  drivers: sh: resume enabled clocks fix
  dmaengine: shdma: SH_DMAC_MAX_CHANNELS message fix
  sh: Fix up xchg/cmpxchg corruption with gUSA RB.
  sh: Remove compressed kernel libgcc dependency.
  sh: fix wrong icache/dcache address-array start addr in cache-debugfs.
2011-06-16 09:46:24 -07:00
Linus Torvalds f49cc57cc9 Merge branch 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x
* 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x:
  ARM: mach-shmobile: mackerel: tidyup usbhs driver settings
  ARM: mach-shmobile: Correct SCIF port types for SH7367.
  ARM: mach-shmobile: sh73a0 gic_arch_extn.irq_set_wake() fix
  ARM: mach-shmobile: Mackerel USB platform data update
  ARM: mach-shmobile: AG5EVM SDHI1 platform data update
2011-06-16 09:46:08 -07:00
Linus Torvalds f4ef084226 Merge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-3.x
* 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-3.x:
  fbdev: sh_mobile_hdmi: fix regression: statically enable RTPM
  fbdev/atyfb: Fix 2 defined-but-not-used warnings
  efifb: Fix call to wrong unregister function
  video: s3c-fb: move enabling channel for window
  video: s3c-fb: fix virtual resolution checking
  video: s3c-fb: fix misleading kfree in remove function
2011-06-16 09:45:47 -07:00
Linus Torvalds df9d030c13 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  SELinux: skip file_name_trans_write() when policy downgraded.
  selinux: fix case of names with whitespace/multibytes on /selinux/create
2011-06-16 09:44:20 -07:00