tree 6a31c2f69e6e58d6f9a8f3fdffeac809da19ce5a
parent 439b44b9ebfaa7696cb14b7f6bc42fd42e967efc
author Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> 1521587087 +0000
committer Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> 1521632096 +0000

media: uvcvideo: Prevent setting unavailable flags

The addition of an extra operation to use the GET_INFO command
overwrites all existing flags from the uvc_ctrls table. This includes
setting all controls as supporting  GET_MIN, GET_MAX, GET_RES, and
GET_DEF regardless of whether they do or not.

Move the initialisation of these control capabilities directly to the
uvc_ctrl_fill_xu_info() call where they were originally located in that
use case, and ensure that the new functionality in uvc_ctrl_get_flags()
will only set flags based on their reported capability from the GET_INFO
call.

Fixes: 859086ae3636 ("media: uvcvideo: Apply flags from device to actual
properties")

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>