There are two sets of functions that return information from sub-device
state, one for stream-unaware users and another for stream-aware users.
Add support for stream-aware functions to return format, crop and compose
information from pad-based array that are functionally equivalent to the
old, stream-unaware ones.
Also check state is non-NULL, in order to guard against old drivers
potentially calling this with NULL state for active formats or selection
rectangles.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-subdev.c | 39 +++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 52a8043ab556..7d0ce8c8aab4 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -1684,6 +1684,19 @@ v4l2_subdev_state_get_stream_format(struct v4l2_subdev_state *state,
struct v4l2_subdev_stream_configs *stream_configs;
unsigned int i;
+ if (WARN_ON(!state))
+ return NULL;
+
+ if (state->pads) {
+ if (stream)
+ return NULL;
+
+ if (WARN_ON(pad >= state->num_pads))
+ pad = 0;
+
+ return &state->pads[pad].try_fmt;
+ }
+
lockdep_assert_held(state->lock);
stream_configs = &state->stream_configs;
@@ -1705,6 +1718,19 @@ v4l2_subdev_state_get_stream_crop(struct v4l2_subdev_state *state,
struct v4l2_subdev_stream_configs *stream_configs;
unsigned int i;
+ if (WARN_ON(!state))
+ return NULL;
+
+ if (state->pads) {
+ if (stream)
+ return NULL;
+
+ if (WARN_ON(pad >= state->num_pads))
+ pad = 0;
+
+ return &state->pads[pad].try_crop;
+ }
+
lockdep_assert_held(state->lock);
stream_configs = &state->stream_configs;
@@ -1726,6 +1752,19 @@ v4l2_subdev_state_get_stream_compose(struct v4l2_subdev_state *state,
struct v4l2_subdev_stream_configs *stream_configs;
unsigned int i;
+ if (WARN_ON(!state))
+ return NULL;
+
+ if (state->pads) {
+ if (stream)
+ return NULL;
+
+ if (WARN_ON(pad >= state->num_pads))
+ pad = 0;
+
+ return &state->pads[pad].try_compose;
+ }
+
lockdep_assert_held(state->lock);
stream_configs = &state->stream_configs;
--
2.39.2
