OpenCloudOS-Kernel/drivers/media/mc
Laurent Pinchart d0e3440dab media: mc: Expand MUST_CONNECT flag to always require an enabled link
[ Upstream commit b3decc5ce7d778224d266423b542326ad469cb5f ]

The MEDIA_PAD_FL_MUST_CONNECT flag indicates that the pad requires an
enabled link to stream, but only if it has any link at all. This makes
little sense, as if a pad is part of a pipeline, there are very few use
cases for an active link to be mandatory only if links exist at all. A
review of in-tree drivers confirms they all need an enabled link for
pads marked with the MEDIA_PAD_FL_MUST_CONNECT flag.

Expand the scope of the flag by rejecting pads that have no links at
all. This requires modifying the pipeline build code to add those pads
to the pipeline.

Cc: stable@vger.kernel.org # 6.1
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-03 15:28:17 +02:00
..
Kconfig media: Request API is no longer experimental 2021-09-30 10:07:55 +02:00
Makefile media: Fix Media Controller API config checks 2021-06-24 14:26:00 +02:00
mc-dev-allocator.c
mc-device.c media: mc-device: remove unnecessary __must_check 2023-04-11 18:54:01 +02:00
mc-devnode.c all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate 2022-01-15 08:47:31 -08:00
mc-entity.c media: mc: Expand MUST_CONNECT flag to always require an enabled link 2024-04-03 15:28:17 +02:00
mc-request.c media: mc-request.c: allow object_bind in QUEUED state 2021-06-02 11:41:54 +02:00