Merge branch 'for-linus' of git://git.kernel.dk/linux-block

[~andy/linux] / drivers / media / video / vivi.c

diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 0960d7f0d3947a7fa4b6ae727b5ca55739b2b854..08c10240e70fba4063f2abd8cab3904b1f935a4b 100644 (file)
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -1149,10 +1149,14 @@ static ssize_t
 vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
 {
        struct vivi_dev *dev = video_drvdata(file);
+       int err;
 
        dprintk(dev, 1, "read called\n");
-       return vb2_read(&dev->vb_vidq, data, count, ppos,
+       mutex_lock(&dev->mutex);
+       err = vb2_read(&dev->vb_vidq, data, count, ppos,
                       file->f_flags & O_NONBLOCK);
+       mutex_unlock(&dev->mutex);
+       return err;
 }
 
 static unsigned int