linux_dsm_epyc7002/drivers/media/v4l2-core
Sakari Ailus 479bc5a8c6 media: v4l: async: Allow async notifier register call succeed with no subdevs
The information on how many async sub-devices would be bindable to a
notifier is typically dependent on information from platform firmware and
it's not driver's business to be aware of that.

Many V4L2 main drivers are perfectly usable (and useful) without async
sub-devices and so if there aren't any around, just proceed call the
notifier's complete callback immediately without registering the notifier
itself.

If a driver needs to check whether there are async sub-devices available,
it can be done by inspecting the notifier's num_subdevs field which tells
the number of async sub-devices.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-10-31 13:54:18 -04:00
..
Kconfig
Makefile [media] v4l: Remove V4L2 OF framework in favour of V4L2 fwnode framework 2017-06-06 10:00:03 -03:00
tuner-core.c media: tuner-core: Remove unused #define PREFIX 2017-06-24 09:37:01 -03:00
v4l2-async.c media: v4l: async: Allow async notifier register call succeed with no subdevs 2017-10-31 13:54:18 -04:00
v4l2-clk.c media: Convert to using %pOF instead of full_name 2017-08-20 08:20:20 -04:00
v4l2-common.c
v4l2-compat-ioctl32.c media: v4l2-compat-ioctl32.c: add capabilities field to, v4l2_input32 2017-08-20 08:11:55 -04:00
v4l2-ctrls.c media: v4l2-ctrl: Fix flags field on Control events 2017-10-31 07:21:00 -04:00
v4l2-dev.c
v4l2-device.c
v4l2-dv-timings.c
v4l2-event.c [media] v4l2-core: Use kvmalloc() for potentially big allocations 2017-06-20 09:11:48 -03:00
v4l2-fh.c
v4l2-flash-led-class.c media: v4l2-flash-led-class: Create separate sub-devices for indicators 2017-08-26 20:26:35 -04:00
v4l2-fwnode.c media: v4l: fwnode: Support generic parsing of graph endpoints in a device 2017-10-31 13:47:21 -04:00
v4l2-ioctl.c media: v4l-ioctl: Fix typo on v4l_print_frmsizeenum 2017-09-23 14:56:23 -04:00
v4l2-mc.c
v4l2-mem2mem.c [media] media: v4l2-mem2mem: extend m2m APIs for more accurate buffer management 2017-06-20 08:53:39 -03:00
v4l2-subdev.c [media] v4l2-core: Use kvmalloc() for potentially big allocations 2017-06-20 09:11:48 -03:00
v4l2-trace.c
vb2-trace.c
videobuf2-core.c media: vb2: add bidirectional flag in vb2_queue 2017-08-26 14:15:54 -04:00
videobuf2-dma-contig.c media: vb2: add bidirectional flag in vb2_queue 2017-08-26 14:15:54 -04:00
videobuf2-dma-sg.c media: vb2: add bidirectional flag in vb2_queue 2017-08-26 14:15:54 -04:00
videobuf2-dvb.c
videobuf2-memops.c
videobuf2-v4l2.c
videobuf2-vmalloc.c media: vb2: add bidirectional flag in vb2_queue 2017-08-26 14:15:54 -04:00
videobuf-core.c
videobuf-dma-contig.c
videobuf-dma-sg.c
videobuf-dvb.c
videobuf-vmalloc.c