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media: omap_vout: Fix a possible null pointer dereference in omap_vout_open()

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Move a debug message so that a null pointer access can not happen
for the variable "vout" in this function.

Fixes: 5c7ab6348e ("V4L/DVB: V4L2: Add support for OMAP2/3 V4L2 display driver on top of DSS2")

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Markus Elfring 2017-09-24 05:00:57 -04:00 committed by Mauro Carvalho Chehab
parent 1bfbb88564
commit bfba2b3e21
1 changed files with 2 additions and 1 deletions
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3
drivers/media/platform/omap/omap_vout.c
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@ -1004,11 +1004,12 @@ static int omap_vout_open(struct file *file)
struct omap_vout_device *vout = NULL; struct omap_vout_device *vout = NULL;
vout = video_drvdata(file); vout = video_drvdata(file);
v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
if (vout == NULL) if (vout == NULL)
return -ENODEV; return -ENODEV;
v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
/* for now, we only support single open */ /* for now, we only support single open */
if (vout->opened) if (vout->opened)
return -EBUSY; return -EBUSY;