From 4897de99f2482c96f830cfe23ce9ece2c41f4c25 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Mon, 11 Nov 2013 08:16:03 -0300 Subject: media: bttv: don't setup the controls if there are no video devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit f8e1b699a5504a2da05834c7cfdddb125a8ce088 upstream. 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 Reported-by: Lorenz Röhrl Tested-by: Lorenz Röhrl Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman --- drivers/media/pci/bt8xx/bttv-driver.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/media') diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c index c6532de0eac..4f0aaa51ae0 100644 --- a/drivers/media/pci/bt8xx/bttv-driver.c +++ b/drivers/media/pci/bt8xx/bttv-driver.c @@ -4182,7 +4182,8 @@ static int bttv_probe(struct pci_dev *dev, const struct pci_device_id *pci_id) } 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; -- cgit v1.2.3-18-g5258