Instead of always return -ENOMEM, return the real error that should
come from media_create_pad_link().
Signed-off-by: Max Kellermann <max@duempel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

struct ir_raw_event currently has a size of 12 bytes on most (all?)
architectures. This can be reduced to 8 bytes whilst maintaining
full backwards compatibility.
This saves 2KB in size of struct ir_raw_event_ctrl (as element
kfifo is reduced by 512 * 4 bytes) and it allows to copy the
full struct ir_raw_event with a single 64 bit operation.

Successfully tested with the Nuvoton driver and successfully
compile-tested with the ene_ir driver (as it uses the carrier /
duty_cycle elements).
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Add USB ID of SMK RXX6000 series IR receiver. Often branded as
Lenovo receiver.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

New USB ID for Adaptec eHome receiver in some HP laptops.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Access to dev->initialized is atomic and dev->initialized isn't
accessed in any other code protected by this mutex.
Therefore we don't need to get the mutex here.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

2008-02-25 Andre Weidemann added support for TT S2-3600 and noted
that he still gets image distortions every now and then.

It seems to be common knowledge in many projects that changing
the USB parameters seems to help. OpenELEC has included this patch
for a few years, for example. Nobody bothered to report the issue
upstream though, it seems.

https://github.com/OpenELEC/OpenELEC.tv/issues/1957
http://www.vdr-portal.de/board60-linux/board14-betriebssystem/board96-yavdr/p1033458-darstellungsproblem-bei-2-tt-3600-usb/#post1033458 (in German)
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

The ds3000 driver returned 1 as an error code in many places.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Remove the if..else statement from smipcie-ir.c and add the remote
controller map as a configuration parameter for the card.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Modify the printout for MAC address to be more vendor agnostic.
Print also the port number.
Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Add support for TechnoTrend TT-budget S2-4200 Twin DVB-S2 tuner. The
device seems to be rather similar to DVBSky S952 V3. This is a PCIe
card with 2 tuners. SMI PCIe bridge is used and the card has two
Montage M88RS6000 demod/tuners.

The M88RS6000 demod/tuner package needs firmware. You can download
one here:
http://palosaari.fi/linux/v4l-dvb/firmware/M88RS6000/Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Reviewed-by: Max Nibble <nibble.max@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Passing overlapping source and destination to snprintf is
fragile. Replace with a single (mostly) equivalent call. If one wants
to preserve the space preceding udev->product whether or not there was
a manufacturer, just remove udev->manufacturer from the && expression.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Appending to a string by doing snprintf(buf, bufsize, "%s...", buf,
...) is not guaranteed to work.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Used memory mapped eeprom offsets were off-by 8 bytes.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

PX-BCUD has the following components:
   USB interface: Empia EM28178
   Demodulator: Toshiba TC90532 (works by code for TC90522)
   Tuner: Next version of Sharp QM1D1C0042

em28xx_dvb_init(): add init code for PLEX PX-BCUD with calling
px_bcud_init() that does things like pin configuration.

qm1d1c0042_init(): support the next version of QM1D1C0042, change to
choose an appropriate array of initial registers by reading chip id.

[mchehab@osg.samsung.com: fold a fixup patch and fix checkpatch.pl
 errors/warnings, where applicable]
Signed-off-by: Satoshi Nagahama <sattnag@aim.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Another version of Elgato EyeTV Sat USB DVB-S2 adapter needs just
a USB ID addition.
Signed-off-by: Christian Knippel <namerp@gmail.com>
Reported-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

It's been reported that CJC7113 devices are returning
all 1s when reading register 0:

  "1111111111111111" found @ 0x4a (stk1160)

This new device is apparently compatible with SA7113, so let's
add a quirk to allow its autodetection. Given there isn't
any known differences with SAA7113, this commit does not
introduces a new saa711x_model value.
Reported-by: Philippe Desrochers <desrochers.philippe@gmail.com>
Signed-off-by: Kevin Fitch <kfitch42@gmail.com>
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

- Add a check for the case that both the cropcap and g_selection ops
  are NULL. This shouldn't happen, but I feel happier if the code
  guards against this.

- If g_selection exists, then ignore ENOTTY and ENOIOCTLCMD error
  codes from cropcap. Just assume square pixelaspect ratio in that
  case. This situation can happen if the bridge driver's cropcap op
  calls the corresponding subdev's op. So the cropcap ioctl is set,
  but it might return ENOIOCTLCMD anyway. In the past this would
  just return an error which is wrong.

- Call cropcap first and let g_selection overwrite the bounds and
  defrect. This safeguards against subdev cropcap implementations
  that set those rectangles as well. What g_selection returns has
  priority over what such cropcap implementations return.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Some sensors (like the one in Nokia N900) provide metadata in the first
couple of lines. Make that information information available to the
pipeline.

Use u16 instead, this is a 16-bit value.
Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

The devm_gpiod_get() function returns either a valid pointer to
struct gpio_desc or ERR_PTR() error value, check for NULL is bogus.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Right now, dw2102 assumes that the USB IDs will be either at
an external header or defined internally. That doesn't sound
right.

So, let's move the definitions to just one place.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Add entries for all supported chip variants into the of_match list, so that
the matching driver_info can be selected when using dt.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Add device tree binding documentation for the adv7180 video decoder family.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Detect if firmware is running run-time and download / start it only
when needed. Detection is done by reading IF frequency value.
Garbage value is returned by firmware when it is not running,
otherwise correct value is returned.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Using div_u64() instead of do_div() makes the code slightly more
readable by humans.

[mchehab@osg.samsung.org: originally, this patch was proposed as a bug
 fix for a gcc bug. This was solved already, but it is still better to
 use div_u64, instead of do_div, so I'm applying it, removing the
 comments about the gcc bug]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

Linux 4.6-rc6

* tag 'v4.6-rc6': (762 commits)
  Linux 4.6-rc6
  EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback
  Documentation/sysctl/vm.txt: update numa_zonelist_order description
  lib/stackdepot.c: allow the stack trace hash to be zero
  rapidio: fix potential NULL pointer dereference
  mm/memory-failure: fix race with compound page split/merge
  ocfs2/dlm: return zero if deref_done message is successfully handled
  Ananth has moved
  kcov: don't profile branches in kcov
  kcov: don't trace the code coverage code
  mm: wake kcompactd before kswapd's short sleep
  .mailmap: add Frank Rowand
  mm/hwpoison: fix wrong num_poisoned_pages accounting
  mm: call swap_slot_free_notify() with page lock held
  mm: vmscan: reclaim highmem zone if buffer_heads is over limit
  numa: fix /proc/<pid>/numa_maps for THP
  mm/huge_memory: replace VM_NO_THP VM_BUG_ON with actual VMA check
  mailmap: fix Krzysztof Kozlowski's misspelled name
  thp: keep huge zero page pinned until tlb flush
  mm: exclude HugeTLB pages from THP page_mapped() logic
  ...

Pull thermal fixes from Eduardo Valentin:
 "A couple of minor fixes for the thermal subsystem.

  Specifics in this pull request:

   - Fixes in hisilicon thermal driver
   - More fixes of unsigned to int type change in thermal_core.c"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
  thermal: use %d to print S32 parameters
  thermal: hisilicon: increase temperature resolution

Pull powerpc fixes from Michael Ellerman:
 "A few more powerpc fixes for 4.6:

   - cxl: Keep IRQ mappings on context teardown from Michael Neuling

   - cxl: Poll for outstanding IRQs when detaching a context from
     Michael Neuling

   - Wire up preadv2 and pwritev2 syscalls from Rui Salvaterra"

* tag 'powerpc-4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: wire up preadv2 and pwritev2 syscalls
  cxl: Poll for outstanding IRQs when detaching a context
  cxl: Keep IRQ mappings on context teardown

Pull EDAC fix from Borislav Petkov:
 "Make sure sb_edac and i7core_edac do not terminate MCE processing on
  the decoding callchain prematurely"

* tag 'edac_fix_for_4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback

Pull power management fixes from Rafael Wysocki:
 "One revert of a recent cpufreq commit that introduced a regression and
  a fix for intel_pstate's Turbo Activation Ratio handling code.

  Specifics:

   - Revert cpufreq commit that attempted to fix a problem in the
     ondemand/conservative governor code, but did that incorrectly and
     introduced another problem instead (Rafael Wysocki).

   - Fix incorrect decoding of MSR contents related to the Turbo
     Activation Ratio (TAR) handling in the intel_pstate driver
     (Srinivas Pandruvada)"

* tag 'pm+acpi-4.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Fix processing for turbo activation ratio
  Revert "cpufreq: governor: Fix negative idle_time when configured with CONFIG_HZ_PERIODIC"

Pull MMC fixes from Ulf Hansson:
 "Here are a two MMC host fixes:

  - sdhci-acpi: Reduce Baytrail eMMC/SD/SDIO hangs

  - sunxi: Disable eMMC HS-DDR for Allwinner A80"

* tag 'mmc-v4.6-rc4' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: sunxi: Disable eMMC HS-DDR (MMC_CAP_1_8V_DDR) for Allwinner A80
  mmc: sdhci-acpi: Reduce Baytrail eMMC/SD/SDIO hangs

Pull drm fixes from Dave Airlie:
 "A few fixes all over the place:

  radeon is probably the biggest standout, it's a fix for screen
  corruption or hung black outputs so I thought it was worth pulling in.

  Otherwise some amdgpu power control fixes, some misc vmwgfx fixes, one
  etnaviv fix, one virtio-gpu fix, two DP MST fixes, and a single TTM
  fix"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/vmwgfx: Fix order of operation
  drm/vmwgfx: use vmw_cmd_dx_cid_check for query commands.
  drm/vmwgfx: Enable SVGA_3D_CMD_DX_SET_PREDICATION
  drm/amdgpu: disable vm interrupts with vm_fault_stop=2
  drm/amdgpu: print a message if ATPX dGPU power control is missing
  Revert "drm/amdgpu: disable runtime pm on PX laptops without dGPU power control"
  drm/radeon: fix vertical bars appear on monitor (v2)
  drm/ttm: fix kref count mess in ttm_bo_move_to_lru_tail
  drm/virtio: send vblank event after crtc updates
  drm/dp/mst: Restore primary hub guid on resume
  drm/dp/mst: Get validated port ref in drm_dp_update_payload_part1()
  drm/etnaviv: don't move linear memory window on 3D cores without MC2.0

Pull rdma fixes from Doug Ledford:
 "Final set of -rc fixes for 4.6.

  I've collected up a number of patches that are all pretty small with
  the exception of only a couple.  The hfi1 driver has a number of
  important patches, and it is what really drives the line count of this
  pull request up.  These are all small and I've got this kernel built
  and running in the test lab (I have most of the hardware, I think nes
  is the only thing in this patch set that I can't say I've personally
  tested and have up and running).

  Summary:

   - A number of collected fixes for oopses, memory corruptions,
     deadlocks, etc.  All of these fixes are small (many only 5-10
     lines), obvious, and tested.

   - Fix for the security issue related to the use of write for
     bi-directional communications"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  RDMA/nes: don't leak skb if carrier down
  IB/security: Restrict use of the write() interface
  IB/hfi1: Use kernel default llseek for ui device
  IB/hfi1: Don't attempt to free resources if initialization failed
  IB/hfi1: Fix missing lock/unlock in verbs drain callback
  IB/rdmavt: Fix send scheduling
  IB/hfi1: Prevent unpinning of wrong pages
  IB/hfi1: Fix deadlock caused by locking with wrong scope
  IB/hfi1: Prevent NULL pointer deferences in caching code
  MAINTAINERS: Update iser/isert maintainer contact info
  IB/mlx5: Expose correct max_sge_rd limit
  RDMA/iw_cxgb4: Fix bar2 virt addr calculation for T4 chips
  iw_cxgb4: handle draining an idle qp
  iw_cxgb3: initialize ibdev.iwcm->ifname for port mapping
  iw_cxgb4: initialize ibdev.iwcm->ifname for port mapping
  IB/core: Don't drain non-existent rq queue-pair
  IB/core: Fix oops in ib_cache_gid_set_default_gid

Merge fixes from Andrew Morton:
 "20 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  Documentation/sysctl/vm.txt: update numa_zonelist_order description
  lib/stackdepot.c: allow the stack trace hash to be zero
  rapidio: fix potential NULL pointer dereference
  mm/memory-failure: fix race with compound page split/merge
  ocfs2/dlm: return zero if deref_done message is successfully handled
  Ananth has moved
  kcov: don't profile branches in kcov
  kcov: don't trace the code coverage code
  mm: wake kcompactd before kswapd's short sleep
  .mailmap: add Frank Rowand
  mm/hwpoison: fix wrong num_poisoned_pages accounting
  mm: call swap_slot_free_notify() with page lock held
  mm: vmscan: reclaim highmem zone if buffer_heads is over limit
  numa: fix /proc/<pid>/numa_maps for THP
  mm/huge_memory: replace VM_NO_THP VM_BUG_ON with actual VMA check
  mailmap: fix Krzysztof Kozlowski's misspelled name
  thp: keep huge zero page pinned until tlb flush
  mm: exclude HugeTLB pages from THP page_mapped() logic
  kexec: export OFFSET(page.compound_head) to find out compound tail page
  kexec: update VMCOREINFO for compound_order/dtor

Both of these drivers can return NOTIFY_BAD, but this terminates
processing other callbacks that were registered later on the chain.
Since the driver did nothing to log the error it seems wrong to prevent
other interested parties from seeing it. E.g. neither of them had even
bothered to check the type of the error to see if it was a memory error
before the return NOTIFY_BAD.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/72937355dd92318d2630979666063f8a2853495b.1461864507.git.tony.luck@intel.comSigned-off-by: Borislav Petkov <bp@suse.de>

* pm-cpufreq-fixes:
  cpufreq: intel_pstate: Fix processing for turbo activation ratio
  Revert "cpufreq: governor: Fix negative idle_time when configured with CONFIG_HZ_PERIODIC"

Add description of ENOLINK error
Signed-off-by: Helen Mae Koike Fornazier <helen.koike@collabora.co.uk>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

According to the V4L2 API, the VIDIOC_STREAMON ioctl should return EPIPE
if there is a format mismatch in the pipeline configuration.

As the .vidioc_streamon in the v4l2_ioctl_ops usually forwards the error
caused by the v4l2_subdev_link_validate_default (if it is in use), it
should return -EPIPE when it detect the mismatch.

When an entity is connected to a non enabled link,
media_entity_pipeline_start should return -ENOLINK, as the link does not
exist.
Signed-off-by: Helen Mae Koike Fornazier <helen.koike@collabora.co.uk>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

A few fixes for 4.6.
- revert amdgpu PX commit that was previously reverted on the radeon side
- cleaned up version of the NI+ MC update display fix for radeon
- TTM kref fix

* 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: disable vm interrupts with vm_fault_stop=2
  drm/amdgpu: print a message if ATPX dGPU power control is missing
  Revert "drm/amdgpu: disable runtime pm on PX laptops without dGPU power control"
  drm/radeon: fix vertical bars appear on monitor (v2)
  drm/ttm: fix kref count mess in ttm_bo_move_to_lru_tail

three misc vmwgfx fixes

* 'drm-vmwgfx-fixes' of git://people.freedesktop.org/~syeh/repos_linux:
  drm/vmwgfx: Fix order of operation
  drm/vmwgfx: use vmw_cmd_dx_cid_check for query commands.
  drm/vmwgfx: Enable SVGA_3D_CMD_DX_SET_PREDICATION