Commit 231ffc9c authored by Devin Heitmueller's avatar Devin Heitmueller Committed by Mauro Carvalho Chehab

V4L/DVB (9920): em28xx: fix NULL pointer dereference in call to VIDIOC_INT_RESET command

Fix a NULL pointer dereference that would occur if the video decoder tied to
the em28xx supports the VIDIOC_INT_RESET call (for example: the cx25840 driver)
Signed-off-by: default avatarDevin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent a67534a7
...@@ -549,10 +549,11 @@ static int em28xx_config(struct em28xx *dev) ...@@ -549,10 +549,11 @@ static int em28xx_config(struct em28xx *dev)
static void em28xx_config_i2c(struct em28xx *dev) static void em28xx_config_i2c(struct em28xx *dev)
{ {
struct v4l2_routing route; struct v4l2_routing route;
int zero = 0;
route.input = INPUT(dev->ctl_input)->vmux; route.input = INPUT(dev->ctl_input)->vmux;
route.output = 0; route.output = 0;
em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL); em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, &zero);
em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL); em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL);
} }
......
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