ecryptfs: remove unnecessary mux from ecryptfs_init_ecryptfs_miscdev()

The misc_mtx should provide all the protection required to keep the daemon
hash table sane during miscdev registration.  Since this mutex is causing
gratuitous lockdep warnings, this patch removes it.

Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Reported-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
index 50c994a..09a4522 100644 (file)
--- a/fs/ecryptfs/miscdev.c
+++ b/fs/ecryptfs/miscdev.c
@@ -575,13 +575,11 @@ int ecryptfs_init_ecryptfs_miscdev(void)
        int rc;
 
        atomic_set(&ecryptfs_num_miscdev_opens, 0);
-       mutex_lock(&ecryptfs_daemon_hash_mux);
        rc = misc_register(&ecryptfs_miscdev);
        if (rc)
                printk(KERN_ERR "%s: Failed to register miscellaneous device "
                       "for communications with userspace daemons; rc = [%d]\n",
                       __func__, rc);
-       mutex_unlock(&ecryptfs_daemon_hash_mux);
        return rc;
 }