From: Sakari Ailus sakari.ailus@linux.intel.com
[ Upstream commit 91d6a99acfa5ce9f95ede775074b80f7193bd717 ]
Memset the config argument to get_mbus_config V4L2 sub-device pad operation to zero before calling the operation. This ensures the callers don't need to bother with it nor the implementations need to set all fields that may not be relevant to them.
Signed-off-by: Sakari Ailus sakari.ailus@linux.intel.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ideasonboard.com Signed-off-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/v4l2-core/v4l2-subdev.c | 2 ++ include/media/v4l2-subdev.h | 4 +++- 2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 5f115438d0722..cb3ad72a3e54a 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -351,6 +351,8 @@ static int call_enum_dv_timings(struct v4l2_subdev *sd, static int call_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad, struct v4l2_mbus_config *config) { + memset(config, 0, sizeof(*config)); + return check_pad(sd, pad) ? : sd->ops->pad->get_mbus_config(sd, pad, config); } diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index b4fcd0164048e..0740dfc6c0488 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -822,7 +822,9 @@ struct v4l2_subdev_state { * possible configuration from the remote end, likely calling * this operation as close as possible to stream on time. The * operation shall fail if the pad index it has been called on - * is not valid or in case of unrecoverable failures. + * is not valid or in case of unrecoverable failures. The + * config argument has been memset to 0 just before calling + * the op. * * @set_routing: enable or disable data connection routes described in the * subdevice routing table.