[PATCH v3 2/3] media: Documentation: Update {enable,disable}_streams documentation

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Document the expected {enable,disable}_streams callback behaviour for
drivers that are stream-unaware i.e. don't specify the
V4L2_SUBDEV_CAP_STREAMS sub-device capability flat. In this specific case,
the mask argument can be ignored.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 include/media/v4l2-subdev.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 3cc6b4a5935f..ff63fb6046b1 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -834,11 +834,19 @@ struct v4l2_subdev_state {
  *	v4l2_subdev_init_finalize() at initialization time). Do not call
  *	directly, use v4l2_subdev_enable_streams() instead.
  *
+ *	Drivers that support only a single stream without setting the
+ *	V4L2_SUBDEV_CAP_STREAMS sub-device capability flag can ignore the mask
+ *	argument.
+ *
  * @disable_streams: Disable the streams defined in streams_mask on the given
  *	source pad. Subdevs that implement this operation must use the active
  *	state management provided by the subdev core (enabled through a call to
  *	v4l2_subdev_init_finalize() at initialization time). Do not call
  *	directly, use v4l2_subdev_disable_streams() instead.
+ *
+ *	Drivers that support only a single stream without setting the
+ *	V4L2_SUBDEV_CAP_STREAMS sub-device capability flag can ignore the mask
+ *	argument.
  */
 struct v4l2_subdev_pad_ops {
 	int (*enum_mbus_code)(struct v4l2_subdev *sd,
-- 
2.39.5