Commit 997a6b01 authored by Tomi Valkeinen's avatar Tomi Valkeinen Committed by Mauro Carvalho Chehab
Browse files

media: Documentation: Fix [GS]_ROUTING documentation 



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

Fixes: ea73eda5 ("media: Documentation: Add GS_ROUTING documentation")
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent a210df33

Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst

+4 −3
Original line number Original line Diff line number Diff line
@@ -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