staging: cx25821: avoid NULL pointer dereference
Assign dev only if fh is not NULL.
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/cx25821/cx25821-audups11.c b/drivers/staging/cx25821/cx25821-audups11.c
index 89c8fe2..46c7f78 100644
--- a/drivers/staging/cx25821/cx25821-audups11.c
+++ b/drivers/staging/cx25821/cx25821-audups11.c
@@ -343,10 +343,11 @@
struct v4l2_control *ctl)
{
struct cx25821_fh *fh = priv;
- struct cx25821_dev *dev = fh->dev;
+ struct cx25821_dev *dev;
int err;
if (fh) {
+ dev = fh->dev;
err = v4l2_prio_check(&dev->prio, &fh->prio);
if (0 != err)
return err;
diff --git a/drivers/staging/cx25821/cx25821-video.c b/drivers/staging/cx25821/cx25821-video.c
index 6e710ae..8cd3986 100644
--- a/drivers/staging/cx25821/cx25821-video.c
+++ b/drivers/staging/cx25821/cx25821-video.c
@@ -963,10 +963,11 @@
int vidioc_s_frequency(struct file *file, void *priv, struct v4l2_frequency *f)
{
struct cx25821_fh *fh = priv;
- struct cx25821_dev *dev = fh->dev;
+ struct cx25821_dev *dev;
int err;
if (fh) {
+ dev = fh->dev;
err = v4l2_prio_check(&dev->prio, &fh->prio);
if (0 != err)
return err;