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| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2013-08-05 20:16:37 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2013-08-21 08:18:31 (GMT) |
| commit | b563a0d049143a98411b6a45745186daf443d587 (patch) | |
| tree | cc88fa5a053f842101d0afb855e630fee1f43a4b /drivers/media | |
| parent | 6c94e14e7f802011afc1018fc8529e66f40866b9 (diff) | |
| download | linux-b563a0d049143a98411b6a45745186daf443d587.tar.xz | |
[media] gspca: fix dev_open() error path
If v4l2_fh_open() fails in dev_open(), gspca_dev->module left locked.
The patch adds module_put(gspca_dev->module) on this path.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/usb/gspca/gspca.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/usb/gspca/gspca.c b/drivers/media/usb/gspca/gspca.c index b7ae872..048507b 100644 --- a/drivers/media/usb/gspca/gspca.c +++ b/drivers/media/usb/gspca/gspca.c @@ -1266,6 +1266,7 @@ static void gspca_release(struct v4l2_device *v4l2_device) static int dev_open(struct file *file) { struct gspca_dev *gspca_dev = video_drvdata(file); + int ret; PDEBUG(D_STREAM, "[%s] open", current->comm); @@ -1273,7 +1274,10 @@ static int dev_open(struct file *file) if (!try_module_get(gspca_dev->module)) return -ENODEV; - return v4l2_fh_open(file); + ret = v4l2_fh_open(file); + if (ret) + module_put(gspca_dev->module); + return ret; } static int dev_close(struct file *file) |