From: Michael Halcrow <mhalcrow@us.ibm.com>

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>
---

 fs/ecryptfs/miscdev.c |    2 --
 1 file changed, 2 deletions(-)

diff -puN fs/ecryptfs/miscdev.c~ecryptfs-remove-unnecessary-mux-from-ecryptfs_init_ecryptfs_miscdev fs/ecryptfs/miscdev.c
--- a/fs/ecryptfs/miscdev.c~ecryptfs-remove-unnecessary-mux-from-ecryptfs_init_ecryptfs_miscdev
+++ a/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;
 }
 
_