From 6606470dd1d628878383c96d10b52a77986ddac7 Mon Sep 17 00:00:00 2001 From: Jonathan Corbet Date: Fri, 16 May 2008 14:28:31 -0600 Subject: videodev: BKL pushdown Put explicit lock_kernel() calls into videodev_open(). That function itself seems OK, but one never knows about all the open() functions provided by underlying video drivers. Signed-off-by: Jonathan Corbet --- drivers/media/video/videodev.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/media/video/videodev.c') diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c index 31e8af0ba278..e5679c28163f 100644 --- a/drivers/media/video/videodev.c +++ b/drivers/media/video/videodev.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include @@ -496,6 +497,7 @@ static int video_open(struct inode *inode, struct file *file) if(minor>=VIDEO_NUM_DEVICES) return -ENODEV; + lock_kernel(); mutex_lock(&videodev_lock); vfl=video_device[minor]; if(vfl==NULL) { @@ -505,6 +507,7 @@ static int video_open(struct inode *inode, struct file *file) vfl=video_device[minor]; if (vfl==NULL) { mutex_unlock(&videodev_lock); + unlock_kernel(); return -ENODEV; } } @@ -518,6 +521,7 @@ static int video_open(struct inode *inode, struct file *file) } fops_put(old_fops); mutex_unlock(&videodev_lock); + unlock_kernel(); return err; } -- cgit v1.2.3