Print a warning if V4L2_CID_LINK_FREQ control is not implemented. Signed-off-by: Andrey Konovalov <andrey.konovalov@xxxxxxxxxx> --- drivers/media/v4l2-core/v4l2-common.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c index 133d20e40f82..f1abdf2ab4ec 100644 --- a/drivers/media/v4l2-core/v4l2-common.c +++ b/drivers/media/v4l2-core/v4l2-common.c @@ -461,6 +461,8 @@ s64 v4l2_get_link_freq(struct v4l2_ctrl_handler *handler, unsigned int mul, freq = qm.value; } else { + pr_warn("%s: V4L2_CID_LINK_FREQ not implemented\n", __func__); + if (!mul || !div) return -ENOENT; -- 2.17.1