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media: Documentation: Fix [GS]_ROUTING documentation

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[ Upstream commit 997a6b01cd ]

Add mention that successful VIDIOC_SUBDEV_G_ROUTING call will update
'num_routes' and remove mention about non-existing streams, which is
incorrect.

Fixes: ea73eda508 ("media: Documentation: Add GS_ROUTING documentation")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tomi Valkeinen 2023-07-20 10:08:28 +02:00 committed by Greg Kroah-Hartman
parent 43126fbe50
commit d77f484453
1 changed files with 4 additions and 3 deletions
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7
Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst
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@ -58,6 +58,9 @@ the subdevice exposes, drivers return the ENOSPC error code and adjust the
value of the ``num_routes`` field. Application should then reserve enough memory value of the ``num_routes`` field. Application should then reserve enough memory
for all the route entries and call ``VIDIOC_SUBDEV_G_ROUTING`` again. for all the route entries and call ``VIDIOC_SUBDEV_G_ROUTING`` again.
On a successful ``VIDIOC_SUBDEV_G_ROUTING`` call the driver updates the
``num_routes`` field to reflect the actual number of routes returned.
.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
.. c:type:: v4l2_subdev_routing .. c:type:: v4l2_subdev_routing
@ -138,9 +141,7 @@ ENOSPC
EINVAL EINVAL
The sink or source pad identifiers reference a non-existing pad, or reference The sink or source pad identifiers reference a non-existing pad, or reference
pads of different types (ie. the sink_pad identifiers refers to a source pad) pads of different types (ie. the sink_pad identifiers refers to a source pad).
or the sink or source stream identifiers reference a non-existing stream on
the sink or source pad.
E2BIG E2BIG
The application provided ``num_routes`` for ``VIDIOC_SUBDEV_S_ROUTING`` is The application provided ``num_routes`` for ``VIDIOC_SUBDEV_S_ROUTING`` is