diff options
| -rw-r--r-- | fs/char_dev.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/char_dev.c b/fs/char_dev.c index 68e510b88457..a54d69369b2f 100644 --- a/fs/char_dev.c +++ b/fs/char_dev.c @@ -373,6 +373,8 @@ static int chrdev_open(struct inode *inode, struct file *filp) return -ENXIO; new = container_of(kobj, struct cdev, kobj); spin_lock(&cdev_lock); + /* Check i_cdev again in case somebody beat us to it while + we dropped the lock. */ p = inode->i_cdev; if (!p) { inode->i_cdev = p = new; |