linux/include/media, branch v5.17

media: dmxdev: drop unneeded inclusion from other headers

2021-12-14T15:19:04Z

There is no evidence we need kernel.h inclusion in certain headers. Drop unneeded inclusion from other headers. Link: https://lore.kernel.org/linux-media/20211210120201.35635-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko Signed-off-by: Mauro Carvalho Chehab

media: lirc: always send timeout reports

2021-12-14T14:09:12Z

Without timeout reports, it is impossible to decode many protocols since it is not known when the transmission ends. timeout reports are sent by default, but can be turned off. There is no reason to turn them off, and I cannot find any software which does this, so we can safely remove it. This makes the ioctl LIRC_SET_REC_TIMEOUT_REPORTS a no-op. Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab

media: videobuf2: add WARN_ON_ONCE if bytesused is bigger than buffer length

2021-12-07T10:29:56Z

In function vb2_set_plane_payload, report if the given bytesused is bigger than the buffer size, and clamp it to the buffer size. Signed-off-by: Dafna Hirschfeld Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: cec: fix a deadlock situation

2021-12-07T10:29:56Z

The cec_devnode struct has a lock meant to serialize access to the fields of this struct. This lock is taken during device node (un)registration and when opening or releasing a filehandle to the device node. When the last open filehandle is closed the cec adapter might be disabled by calling the adap_enable driver callback with the devnode.lock held. However, if during that callback a message or event arrives then the driver will call one of the cec_queue_event() variants in cec-adap.c, and those will take the same devnode.lock to walk the open filehandle list. This obviously causes a deadlock. This is quite easy to reproduce with the cec-gpio driver since that uses the cec-pin framework which generated lots of events and uses a kernel thread for the processing, so when adap_enable is called the thread is still running and can generate events. But I suspect that it might also happen with other drivers if an interrupt arrives signaling e.g. a received message before adap_enable had a chance to disable the interrupts. This patch adds a new mutex to serialize access to the fhs list. When adap_enable() is called the devnode.lock mutex is held, but not devnode.lock_fhs. The event functions in cec-adap.c will now use devnode.lock_fhs instead of devnode.lock, ensuring that it is safe to call those functions from the adap_enable callback. This specific issue only happens if the last open filehandle is closed and the physical address is invalid. This is not something that happens during normal operation, but it does happen when monitoring CEC traffic (e.g. cec-ctl --monitor) with an unconfigured CEC adapter. Signed-off-by: Hans Verkuil Cc: # for v5.13 and up Signed-off-by: Mauro Carvalho Chehab

media: Add VP9 v4l2 library

2021-11-22T07:47:13Z

Provide code common to vp9 drivers in one central location. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Ezequiel Garcia Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: uapi: Add VP9 stateless decoder controls

2021-11-22T07:44:55Z

Add the VP9 stateless decoder controls plus the documentation that goes with it. Signed-off-by: Boris Brezillon Co-developed-by: Ezequiel Garcia Signed-off-by: Ezequiel Garcia Signed-off-by: Adrian Ratiu Signed-off-by: Andrzej Pietrasiewicz Co-developed-by: Daniel Almeida Signed-off-by: Daniel Almeida Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: media dvb_frontend: add suspend and resume callbacks to dvb_frontend_ops

2021-11-19T15:57:22Z

While dvb_tuner_ops already has dedicated suspend and resume callbacks, dvb_frontend_ops currently does not have them. Add those callbacks and use them for suspend and resume. If they are not set, the old behavior of calling sleep or init is used. This allows dvb_frontend drivers to handle resume differently from init, and suspend differently from sleep. No change is required for drivers not needing this functionality. Link: https://lore.kernel.org/linux-media/20210418001204.7453-2-kernel@tuxforce.de Cc: Lukas Middendorf , Antti Palosaari , Mauro Carvalho Chehab , Luis Chamberlain Signed-off-by: Lukas Middendorf Signed-off-by: Mauro Carvalho Chehab

media: v4l2-mem2mem: add v4l2_m2m_get_unmapped_area for no-mmu platform

2021-11-15T08:11:31Z

For platforms without MMU the m2m provides a helper method v4l2_m2m_get_unmapped_area(), The mmap() routines will call this to get a proposed address for the mapping. More detailed information about get_unmapped_area can be found in Documentation/nommu-mmap.txt Signed-off-by: Dillon Min Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

Merge branch 'akpm' (patches from Andrew)

2021-11-09T18:11:53Z

Merge more updates from Andrew Morton: "87 patches. Subsystems affected by this patch series: mm (pagecache and hugetlb), procfs, misc, MAINTAINERS, lib, checkpatch, binfmt, kallsyms, ramfs, init, codafs, nilfs2, hfs, crash_dump, signals, seq_file, fork, sysvfs, kcov, gdb, resource, selftests, and ipc" * emailed patches from Andrew Morton : (87 commits) ipc/ipc_sysctl.c: remove fallback for !CONFIG_PROC_SYSCTL ipc: check checkpoint_restore_ns_capable() to modify C/R proc files selftests/kselftest/runner/run_one(): allow running non-executable files virtio-mem: disallow mapping virtio-mem memory via /dev/mem kernel/resource: disallow access to exclusive system RAM regions kernel/resource: clean up and optimize iomem_is_exclusive() scripts/gdb: handle split debug for vmlinux kcov: replace local_irq_save() with a local_lock_t kcov: avoid enable+disable interrupts if !in_task() kcov: allocate per-CPU memory on the relevant node Documentation/kcov: define `ip' in the example Documentation/kcov: include types.h in the example sysv: use BUILD_BUG_ON instead of runtime check kernel/fork.c: unshare(): use swap() to make code cleaner seq_file: fix passing wrong private data seq_file: move seq_escape() to a header signal: remove duplicate include in signal.h crash_dump: remove duplicate include in crash_dump.h crash_dump: fix boolreturn.cocci warning hfs/hfsplus: use WARN_ON for sanity check ...

include/media/media-entity.h: replace kernel.h with the necessary inclusions

2021-11-09T18:02:49Z

When kernel.h is used in the headers it adds a lot into dependency hell, especially when there are circular dependencies are involved. Replace kernel.h inclusion with the list of what is really being used. Link: https://lkml.kernel.org/r/20211013170417.87909-8-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko Acked-by: Sakari Ailus Cc: Boqun Feng Cc: Brendan Higgins Cc: Ingo Molnar Cc: Jonathan Cameron Cc: Laurent Pinchart Cc: Mauro Carvalho Chehab Cc: Miguel Ojeda Cc: Peter Zijlstra Cc: Rasmus Villemoes Cc: Thomas Gleixner Cc: Thorsten Leemhuis Cc: Waiman Long Cc: Will Deacon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds