Store the sub-device in the sub-device state. This will be needed in e.g.
validating pad number when retrieving information for non-stream-aware
users. There are expected to be more needs for this in the future.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-subdev.c | 2 ++
include/media/v4l2-subdev.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index d295a4e87b66..ee4fe8f33a41 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -1441,6 +1441,8 @@ __v4l2_subdev_state_alloc(struct v4l2_subdev *sd, const char *lock_name,
else
state->lock = &state->_lock;
+ state->sd = sd;
+
/* Drivers that support streams do not need the legacy pad config */
if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS) && sd->entity.num_pads) {
state->pads = kvcalloc(sd->entity.num_pads,
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index c1f90c1223a7..6a02a565035c 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -756,6 +756,7 @@ struct v4l2_subdev_krouting {
*
* @_lock: default for 'lock'
* @lock: mutex for the state. May be replaced by the user.
+ * @sd: the sub-device which the state is related to
* @pads: &struct v4l2_subdev_pad_config array
* @routing: routing table for the subdev
* @stream_configs: stream configurations (only for V4L2_SUBDEV_FL_STREAMS)
@@ -768,6 +769,7 @@ struct v4l2_subdev_state {
/* lock for the struct v4l2_subdev_state fields */
struct mutex _lock;
struct mutex *lock;
+ struct v4l2_subdev *sd;
struct v4l2_subdev_pad_config *pads;
struct v4l2_subdev_krouting routing;
struct v4l2_subdev_stream_configs stream_configs;
--
2.39.2
