diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/uvc/uvc_ctrl.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c index d6fe13de7ae4..0dc2a9f7ca51 100644 --- a/drivers/media/video/uvc/uvc_ctrl.c +++ b/drivers/media/video/uvc/uvc_ctrl.c @@ -1015,6 +1015,24 @@ int uvc_query_v4l2_menu(struct uvc_video_chain *chain, } menu_info = &mapping->menu_info[query_menu->index]; + + if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) { + s32 bitmap; + + if (!ctrl->cached) { + ret = uvc_ctrl_populate_cache(chain, ctrl); + if (ret < 0) + goto done; + } + + bitmap = mapping->get(mapping, UVC_GET_RES, + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_RES)); + if (!(bitmap & menu_info->value)) { + ret = -EINVAL; + goto done; + } + } + strlcpy(query_menu->name, menu_info->name, sizeof query_menu->name); done: |