Print a warning if V4L2_CID_LINK_FREQ control is not implemented.
Signed-off-by: NAndrey Konovalov <andrey.konovalov@linaro.org>
Reviewed-by: NJacopo Mondi <jacopo@jmondi.org>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>