Merge tag 'v3.18-rc1' into for_next

Linux 3.18-rc1
xtensa: re-wire umount syscall to sys_oldumount

Userspace actually passes single parameter (path name) to the umount
syscall, so new umount just fails. Fix it by requesting old umount
syscall implementation and re-wiring umount to it.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: xtfpga: add generic KC705 board config

This config enables most important features, NFS or FLASH rootfs and
minimal debug.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
xtensa: xtfpga: add lx200 SMP DTS and defconfig

This config allows running SMP-enabled bitstream on LX200 board.
NFS or FLASH rootfs, minimal debug, up to 4 cores.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Merge tag 'v3.18-rc1' into v4l_for_linus

Linux 3.18-rc1

* tag 'v3.18-rc1': (9167 commits)
  Linux 3.18-rc1
  MAINTAINERS: corrected bcm2835 search
  Net: DSA: Fix checking for get_phy_flags function
  sparc64: Do not define thread fpregs save area as zero-length array.
  sparc64: Fix corrupted thread fault code.
  MAINTAINERS: Become the docs maintainer
  x86,kvm,vmx: Preserve CR4 across VM entry
  ipv6: fix a potential use after free in sit.c
  ipv6: fix a potential use after free in ip6_offload.c
  ipv4: fix a potential use after free in gre_offload.c
  tcp: fix build error if IPv6 is not enabled
  futex: Ensure get_futex_key_refs() always implies a barrier
  bna: fix skb->truesize underestimation
  net: dsa: add includes for ethtool and phy_fixed definitions
  openvswitch: Set flow-key members.
  netrom: use linux/uaccess.h
  dsa: Fix conversion from host device to mii bus
  tipc: fix bug in bundled buffer reception
  ipv6: introduce tcp_v6_iif()
  sfc: add support for skb->xmit_more
  ...
[media] v4l: DocBook: fix media build error

Fix media DocBook build errors by re-adding the orderedlist tag
and putting back the section tags lost during merge.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] af9035: make sure loading modules is const

Make sure that loaded modules are const char strings so we don't
load arbitrary modules in the future, nor allow for format string
leaks in the module request call.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] anysee: make sure loading modules is const

Make sure that loaded modules are const char strings so we don't
load arbitrary modules in the future, nor allow for format string
leaks in the module request call.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] vivid: fix Kconfig FB dependency

The vivid driver depends on FB, update the Kconfig accordingly.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] em28xx: fix uninitialized variable warning

Fix this daily build warning:

In file included from build/media_build/v4l/em28xx-core.c:35:0:
build/media_build/v4l/em28xx-core.c: In function 'em28xx_audio_setup':
build/media_build/v4l/em28xx.h:798:2: warning: 'vid' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printk(KERN_INFO "%s: "fmt,\
  ^
build/media_build/v4l/em28xx-core.c:507:6: note: 'vid' was declared here
  u32 vid;
      ^

As far as I can tell 'vid' can not really be used uninitialized here, but the code
is sufficiently complex that apparently gcc can't figure that out.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] saa7146: Create a device name before it's used

request_irq() uses it, tries to create a procfs file with an empty name
otherwise.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=83771

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] vivid: fix buffer overrun

The random_line buffer must be twice the maximum width, but it only allocated
the maximum width, so it was only half the size it needed to be.

Surprisingly I never saw the kernel fail on this, but the same TPG code used in
qv4l2 crashed and valgrind helped me track this bug down.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] v4l: uvcvideo: Fix buffer completion size check

Commit e93e7fd9f5a3fffec7792dbcc4c3574653effda7 ("v4l2: uvcvideo: Allow
using larger buffers") reworked the buffer size sanity check at buffer
completion time to use the frame size instead of the allocated buffer
size. However, it introduced two bugs in doing so:

- it assigned the allocated buffer size to the frame_size field, instead
  of assigning the correct frame size

- it performed the assignment in the S_FMT handler, resulting in the
  frame_size field being uninitialized if the userspace application
  doesn't call S_FMT.

Fix both issues by removing the frame_size field and validating the
buffer size against the UVC video control dwMaxFrameSize.

Fixes: e93e7fd9f5a3 ("v4l2: uvcvideo: Allow using larger buffers")

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] cx23885: initialize config structs for T9580

The config structs used for DVBSky T9580 were not initialized. This patch fixes that.

Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
[media] hackrf: harmless off by one in debug code

My static checker complains that "i" could be one element beyond the end
of the array.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
nfsd4: fix response size estimation for OP_SEQUENCE

We added this new estimator function but forgot to hook it up.  The
effect is that NFSv4.1 (and greater) won't do zero-copy reads.

The estimate was also wrong by 8 bytes.

Fixes: ccae70a9ee41 "nfsd4: estimate sequence response size"
Cc: stable@vger.kernel.org
Reported-by: Chuck Lever <chucklever@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
dm raid: ensure superblock's size matches device's logical block size

The dm-raid superblock (struct dm_raid_superblock) is padded to 512
bytes and that size is being used to read it in from the metadata
device into one preallocated page.

Reading or writing this on a 512-byte sector device works fine but on
a 4096-byte sector device this fails.

Set the dm-raid superblock's size to the logical block size of the
metadata device, because IO at that size is guaranteed too work.  Also
add a size check to avoid silent partial metadata loss in case the
superblock should ever grow past the logical block size or PAGE_SIZE.

[includes pointer math fix from Dan Carpenter]
Reported-by: "Liuhua Wang" <lwang@suse.com>
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Documentation/ABI/testing/sysfs-ibft: fix a typo

Correct a sentence in Documentation/ABI/testing/sysfs-ibft.

Signed-off-by: WANG Chao <chaowang@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Documentation: dt-bindings: Explain order in patch series

When posting a patch series that includes both code implementing a
Device Tree binding and its associated documentation, the DT docs
should come in the series before the implementation.

This not only avoids checkpatch.pl to complain about undocumented
bindings but also makes the review process easier.

Document this convention since it may not be obvious.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Documentation: fix vdso_standalone_test_x86 on 32-bit

vdso_standalone_test_x86 needs -lgcc_s to build succesfully on 32bit.

Signed-off-by: Peter Foley <pefoley2@pefoley.com>
[ Fixed missing separator issue reported by Paul Bolle <pebolle@tiscali.nl> ]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>