diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/uvc/uvc_ctrl.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c index fcfcfbce0a2d..4e6d484911fe 100644 --- a/drivers/media/video/uvc/uvc_ctrl.c +++ b/drivers/media/video/uvc/uvc_ctrl.c @@ -698,6 +698,14 @@ static void uvc_set_le_value(struct uvc_control_mapping *mapping, int offset = mapping->offset; __u8 mask; + /* According to the v4l2 spec, writing any value to a button control + * should result in the action belonging to the button control being + * triggered. UVC devices however want to see a 1 written -> override + * value. + */ + if (mapping->v4l2_type == V4L2_CTRL_TYPE_BUTTON) + value = -1; + data += offset / 8; offset &= 7; |