[media] bttv: don't setup the controls if there are no video devices
The no_video flag was checked in all other cases except one. Calling
v4l2_ctrl_handler_setup() if no_video is 1 will crash.
This wasn't noticed before since there are only two card types that
set no_video to 1, so this type of hardware is quite rare.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Lorenz Röhrl <sheepshit@gmx.de>
Tested-by: Lorenz Röhrl <sheepshit@gmx.de>
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c
index a3b1ee9..92a06fd 100644
--- a/drivers/media/pci/bt8xx/bttv-driver.c
+++ b/drivers/media/pci/bt8xx/bttv-driver.c
@@ -4182,7 +4182,8 @@
}
btv->std = V4L2_STD_PAL;
init_irqreg(btv);
- v4l2_ctrl_handler_setup(hdl);
+ if (!bttv_tvcards[btv->c.type].no_video)
+ v4l2_ctrl_handler_setup(hdl);
if (hdl->error) {
result = hdl->error;
goto fail2;