From: Jim Paris <jim@jtan.com>
Date: Wed, 10 Dec 2008 08:50:44 +0000 (-0300)
Subject: V4L/DVB (9875): gspca - main: Fix vidioc_s_jpegcomp locking.
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f86d4a9173e47050de9f88faa4aaf70a718791c5;p=deliverable%2Flinux.git

V4L/DVB (9875): gspca - main: Fix vidioc_s_jpegcomp locking.

Signed-off-by: Jim Paris <jim@jtan.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 748a87e82e44..02a6e9ef0337 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -1264,10 +1264,10 @@ static int vidioc_s_jpegcomp(struct file *file, void *priv,
 	struct gspca_dev *gspca_dev = priv;
 	int ret;
 
-	if (mutex_lock_interruptible(&gspca_dev->usb_lock))
-		return -ERESTARTSYS;
 	if (!gspca_dev->sd_desc->set_jcomp)
 		return -EINVAL;
+	if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+		return -ERESTARTSYS;
 	ret = gspca_dev->sd_desc->set_jcomp(gspca_dev, jpegcomp);
 	mutex_unlock(&gspca_dev->usb_lock);
 	return ret;