e8fa567118
Don't return from the open() call on the crc/data file until the HW has produced a first frame, as there's great variability in when the HW is able to do that and userspace shouldn't have to guess when this specific HW is ready to start giving frame CRCs. Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20170102125912.22305-3-tomeu.vizoso@collabora.com