The VM subsystem assumes that there are valid memmap entries from
the bank start aligned to MAX_ORDER_NR_PAGES.

On the Ux500 we have a lot of mem=N arguments on the commandline
triggering this bug several times over and causing kernel
oops messages.

Cc: stable@kernel.org
Cc: Michael Bohan <mbohan@codeaurora.org>
Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: NJohan Palsson <johan.palsson@stericsson.com>
Signed-off-by: NRabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

__find_resource() incorrectly returns a resource window which overlaps
an existing allocated window.  This happens when the parent's
resource-window spans 0x00000000 to 0xffffffff and is entirely allocated
to all its children resource-windows.

__find_resource() looks for gaps in resource allocation among the
children resource windows.  When it encounters the last child window it
blindly tries the range next to one allocated to the last child.  Since
the last child's window ends at 0xffffffff the calculation overflows,
leading the algorithm to believe that any window in the range 0x0000000
to 0xfffffff is available for allocation.  This leads to a conflicting
window allocation.

Michal Ludvig reported this issue seen on his platform.  The following
patch fixes the problem and has been verified by Michal.  I believe this
bug has been there for ages.  It got exposed by git commit 2bbc6942
("PCI : ability to relocate assigned pci-resources")
Signed-off-by: NRam Pai <linuxram@us.ibm.com>
Tested-by: NMichal Ludvig <mludvig@logix.net.nz>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'for-linus' of git://github.com/NewDreamNetwork/ceph-client:
  libceph: fix pg_temp mapping update
  libceph: fix pg_temp mapping calculation
  libceph: fix linger request requeuing
  libceph: fix parse options memory leak
  libceph: initialize ack_stamp to avoid unnecessary connection reset

* 'v4l_for_linus' of git://linuxtv.org/mchehab/for_linus:
  [media] omap3isp: Fix build error in ispccdc.c
  [media] uvcvideo: Fix crash when linking entities
  [media] v4l: Make sure we hold a reference to the v4l2_device before using it
  [media] v4l: Fix use-after-free case in v4l2_device_release
  [media] uvcvideo: Set alternate setting 0 on resume if the bus has been reset
  [media] OMAP_VOUT: Fix build break caused by update_mode removal in DSS2

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] cio: fix cio_tpi ignoring adapter interrupts
  [S390] gmap: always up mmap_sem properly
  [S390] Do not clobber personality flags on exec

* git://github.com/davem330/sparc:
  sparc64: Force the execute bit in OpenFirmware's translation entries.
  sparc: Make '-p' boot option meaningful again.
  sparc, exec: remove redundant addr_limit assignment
  sparc64: Future proof Niagara cpu detection.

* 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux:
  drm/i915: FBC off for ironlake and older, otherwise on by default
  drm/i915: Enable SDVO hotplug interrupts for HDMI and DVI
  drm/i915: Enable dither whenever display bpc < frame buffer bpc

Apple Quad G5 has some oddity in it's device-tree which causes the new
generic matching code to fail to relate nodes for PCI-E devices below U4
with their respective struct pci_dev.  This breaks graphics on those
machines among others.

This fixes it using a quirk which copies the node pointer from the host
bridge for the root complex, which makes the generic code work for the
children afterward.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Commit d5767c53 ("bootup: move 'usermodehelper_enable()' to the end
of do_basic_setup()") moved 'usermodehelper_enable()' to end of
do_basic_setup() to after the initcalls.  But then I get failed to let
uvesafb work on my computer, and lose the splash boot.

So maybe we could start usermodehelper_enable a little early to make
some task work that need eary init with the help of user mode.

[ I would *really* prefer that initcalls not call into user space - even
  the real 'init' hasn't been execve'd yet, after all! But for uvesafb
  it really does look like we don't have much choice.

  I considered doing this when we mount the root filesystem, but
  depending on config options that is in multiple places.  We could do
  the usermode helper enable as a rootfs_initcall()..

  So I'm just using wang yanqing's trivial patch.  It's not wonderful,
  but it's simple and should work.  We should revisit this some day,
  though.      - Linus ]
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

In the OF 'translations' property, the template TTEs in the mappings
never specify the executable bit.  This is the case even though some
of these mappings are for OF's code segment.

Therefore, we need to force the execute bit on in every mapping.

This problem can only really trigger on Niagara/sun4v machines and the
history behind this is a little complicated.

Previous to sun4v, the sun4u TTE entries lacked a hardware execute
permission bit.  So OF didn't have to ever worry about setting
anything to handle executable pages.  Any valid TTE loaded into the
I-TLB would be respected by the chip.

But sun4v Niagara chips have a real hardware enforced executable bit
in their TTEs.  So it has to be set or else the I-TLB throws an
instruction access exception with type code 6 (protection violation).

We've been extremely fortunate to not get bitten by this in the past.

The best I can tell is that the OF's mappings for it's executable code
were mapped using permanent locked mappings on sun4v in the past.
Therefore, the fact that we didn't have the exec bit set in the OF
translations we would use did not matter in practice.

Thanks to Greg Onufer for helping me track this down.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Doing it just before starting to call into cpu_idle() made a sick kind
of sense only because the original bug we fixed (see commit
288d5abe: "Boot up with usermodehelper disabled") was about problems
with some scheduler data structures not being initialized, and they had
better be initialized at that point.

But it really didn't make any other conceptual sense, and doing it after
the initial "schedule()" call for the idle thread actually opened up a
race: what if the main initialization thread did everything without
needing to sleep, and got all the way into user land too? Without
actually having scheduled back to the idle thread?

Now, in normal circumstances that doesn't ever happen, but it looks like
Richard Cochran triggered exactly that on his ARM IXP4xx machines:

  "I have some ARM IXP4xx based machines that use the two on chip MAC
   ports (aka NPEs).  The NPE needs a firmware in order to function.
   Ever since the following commit [that 288d5abe one], it is no
   longer possible to bring up the interfaces during the init scripts."

with a call trace showing an ioctl coming from user space. Richard says:

  "The init is busybox, and the startup script does mount, syslogd, and
   then ifup, so that all can go by quickly."

The fix is to move the usermodehelper_enable() into the main 'init'
thread, and just put it after we've done all our initcalls.  By then,
everything really should be up, but we've obviously not actually started
the user-mode portion of init yet.
Reported-and-tested-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The incremental map updates have a record for each pg_temp mapping that is
to be add/updated (len > 0) or removed (len == 0).  The old code was
written as if the updates were a complete enumeration; that was just wrong.
Update the code to remove 0-length entries and drop the rbtree traversal.

This avoids misdirected (and hung) requests that manifest as server
errors like

[WRN] client4104 10.0.1.219:0/275025290 misdirected client4104.1:129 0.1 to osd0 not [1,0] in e11/11
Signed-off-by: NSage Weil <sage@newdream.net>

We need to apply the modulo pg_num calculation before looking up a pgid in
the pg_temp mapping rbtree.  This fixes pg_temp mappings, and fixes
(some) misdirected requests that result in messages like

[WRN] client4104 10.0.1.219:0/275025290 misdirected client4104.1:129 0.1 to osd0 not [1,0] in e11/11

on the server and stall make the client block without getting a reply (at
least until the pg_temp mapping goes way, but that can take a long long
time).

Reorder calc_pg_raw() a bit to make more sense.
Signed-off-by: NSage Weil <sage@newdream.net>

* git://github.com/davem330/net:
  ipv6-multicast: Fix memory leak in IPv6 multicast.
  ipv6: check return value for dst_alloc
  net: check return value for dst_alloc
  ipv6-multicast: Fix memory leak in input path.
  bnx2x: add missing break in bnx2x_dcbnl_get_cap
  bnx2x: fix WOL by enablement PME in config space
  bnx2x: fix hw attention handling
  net: fix a typo in Documentation/networking/scaling.txt
  ath9k: Fix a dma warning/memory leak
  rtlwifi: rtl8192cu: Fix unitialized struct
  iwlagn: fix dangling scan request
  batman-adv: do_bcast has to be true for broadcast packets only
  cfg80211: Fix validation of AKM suites
  iwlegacy: do not use interruptible waits
  iwlegacy: fix command queue timeout
  ath9k_hw: Fix Rx DMA stuck for AR9003 chips

* git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6:
  [SCSI] 3w-9xxx: fix iommu_iova leak
  [SCSI] cxgb3i: convert cdev->l2opt to use rcu to prevent NULL dereference
  [SCSI] scsi: qla4xxx needs libiscsi.o
  [SCSI] libsas: fix failure to revalidate domain for anything but the first expander child.
  [SCSI] aacraid: reset should disable MSI interrupt

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: Free queue resources at blk_release_queue()

* 'writeback-for-linus' of git://github.com/fengguang/linux:
  writeback: show raw dirtied_when in trace writeback_single_inode

A kernel crash is observed when a mounted ext3/ext4 filesystem is
physically removed. The problem is that blk_cleanup_queue() frees up
some resources eg by calling elevator_exit(), which are not checked for
in normal operation. So we should rather move these calls to the
destructor function blk_release_queue() as at that point all remaining
references are gone. However, in doing so we have to ensure that any
externally supplied queue_lock is disconnected as the driver might free
up the lock after the call of blk_cleanup_queue(),
Signed-off-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJens Axboe <axboe@kernel.dk>

* 'for-linus' of git://github.com/tiwai/sound:
  ASoC: ssm2602: Re-enable oscillator after suspend
  ALSA: usb-audio: Check for possible chip NULL pointer before clearing probing flag
  ALSA: hda/realtek - Don't detect LO jack when identical with HP
  ALSA: hda/realtek - Avoid bogus HP-pin assignment
  ALSA: HDA: No power nids on 92HD93
  ASoC: omap-mcbsp: Do not attempt to change DAI sysclk if stream is active

* 'pm-fixes' of git://github.com/rjwysocki/linux-pm:
  PM / Clocks: Do not acquire a mutex under a spinlock

If reg_vif_xmit cannot find a routing entry, be sure to
free the skb before returning the error.
Signed-off-by: NBen Greear <greearb@candelatech.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

return value of dst_alloc must be checked before use
Signed-off-by: NMadalin Bucur <madalin.bucur@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

return value of dst_alloc must be checked before use
Signed-off-by: NMadalin Bucur <madalin.bucur@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Have to free the skb before returning if we fail
the fib lookup.
Signed-off-by: NBen Greear <greearb@candelatech.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use register name to initialize attention mask
Signed-off-by: NDmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NJason Wang <jasowang@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

That flag no longer makes sense, since we don't look up automount points
as eagerly any more.  Additionally, it turns out that the NO_AUTOMOUNT
handling was buggy to begin with: it would avoid automounting even for
cases where we really *needed* to do the automount handling, and could
return ENOENT for autofs entries that hadn't been instantiated yet.

With our new non-eager automount semantics, one discussion has been
about adding a AT_AUTOMOUNT flag to vfs_fstatat (and thus the
newfstatat() and fstatat64() system calls), but it's probably not worth
it: you can always force at least directory automounting by simply
adding the final '/' to the filename, which works for *all* of the stat
family system calls, old and new.

So AT_NO_AUTOMOUNT (and thus LOOKUP_NO_AUTOMOUNT) really were just a
result of our bad default behavior.
Acked-by: NIan Kent <raven@themaw.net>
Acked-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Currently the the internal oscillator is powered down when entering BIAS_OFF
state, but not re-enabled when going back to BIAS_STANDBY. As a result the
CODEC will stop working after suspend if the internal oscillator is used to
generate the sysclock signal. This patch fixes it by clearing the appropriate
bit in the power down register when the CODEC is re-enabled.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org

The concensus seems to be that system calls such as stat() etc should
not trigger an automount.  Neither should the l* versions.

This patch therefore adds a LOOKUP_AUTOMOUNT flag to tag those lookups
that _should_ trigger an automount on the last path element.
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
[ Edited to leave out the cases that are already covered by LOOKUP_OPEN,
  LOOKUP_DIRECTORY and LOOKUP_CREATE - all of which also fundamentally
  force automounting for their own reasons   - Linus ]
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Since we've now turned around and made LOOKUP_FOLLOW *not* force an
automount, we want to add the ability to force an automount event on
lookup even if we don't happen to have one of the other flags that force
it implicitly (LOOKUP_OPEN, LOOKUP_DIRECTORY, LOOKUP_PARENT..)

Most cases will never want to use this, since you'd normally want to
delay automounting as long as possible, which usually implies
LOOKUP_OPEN (when we open a file or directory, we really cannot avoid
the automount any more).

But Trond argued sufficiently forcefully that at a minimum bind mounting
a file and quotactl will want to force the automount lookup.  Some other
cases (like nfs_follow_remote_path()) could use it too, although
LOOKUP_DIRECTORY would work there as well.

This commit just adds the flag and logic, no users yet, though.  It also
doesn't actually touch the LOOKUP_NO_AUTOMOUNT flag that is related, and
was made irrelevant by the same change that made us not follow on
LOOKUP_FOLLOW.

Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Ian Kent <raven@themaw.net>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: David Howells <dhowells@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'samsung-fixes-3' of git://github.com/kgene/linux-samsung:
  ARM: EXYNOS4: Rename sclk_cam clocks for FIMC driver
  ARM: S5PV210: Rename sclk_cam clocks for FIMC media driver
  ARM: S5P: fix incorrect loop iterator usage on gpio-interrupt
  ARM: S3C2443: Fix bit-reset in setrate of clk_armdiv

The sclk_cam clocks are now controlled by the top level FIMC media
device driver bound to "s5p-fimc-md" platform device.
Rename sclk_cam clocks so they accessible by the corresponding
driver.
Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

The sclk_cam clocks are now controlled by the top level FIMC media
device driver bound to "s5p-fimc-md" platform device.
Rename sclk_cam clocks so they accessible by the corresponding
driver.
Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>