[media] v4l2-ctrls: add a filter function to v4l2_ctrl_add_handler
With a filter function you can control more precisely which controls
are added. This is useful in particular for radio device nodes for
combined TV/Radio cards where you want to show just the radio-specific
controls and not controls like brightness.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/pci/cx88/cx88-video.c b/drivers/media/pci/cx88/cx88-video.c
index f6fcc7e..a146d50 100644
--- a/drivers/media/pci/cx88/cx88-video.c
+++ b/drivers/media/pci/cx88/cx88-video.c
@@ -1795,7 +1795,7 @@
if (vc->id == V4L2_CID_CHROMA_AGC)
core->chroma_agc = vc;
}
- v4l2_ctrl_add_handler(&core->video_hdl, &core->audio_hdl);
+ v4l2_ctrl_add_handler(&core->video_hdl, &core->audio_hdl, NULL);
/* load and configure helper modules */