[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-blackbird.c b/drivers/media/pci/cx88/cx88-blackbird.c
index 843ffd9..def363f 100644
--- a/drivers/media/pci/cx88/cx88-blackbird.c
+++ b/drivers/media/pci/cx88/cx88-blackbird.c
@@ -1236,7 +1236,7 @@
err = cx2341x_handler_init(&dev->cxhdl, 36);
if (err)
goto fail_core;
- v4l2_ctrl_add_handler(&dev->cxhdl.hdl, &core->video_hdl);
+ v4l2_ctrl_add_handler(&dev->cxhdl.hdl, &core->video_hdl, NULL);
/* blackbird stuff */
printk("%s/2: cx23416 based mpeg encoder (blackbird reference design)\n",