cifs: convert tcpSem to a mutex

Mutexes are preferred for single-holder semaphores...

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 701daf4..61b68a0 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -156,7 +156,7 @@
 	}
 	read_unlock(&cifs_tcp_ses_lock);
 	/* do not want to be sending data on a socket we are freeing */
-	down(&server->tcpSem);
+	mutex_lock(&server->srv_mutex);
 	if (server->ssocket) {
 		cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state,
 			server->ssocket->flags));
@@ -182,7 +182,7 @@
 		}
 	}
 	spin_unlock(&GlobalMid_Lock);
-	up(&server->tcpSem);
+	mutex_unlock(&server->srv_mutex);
 
 	while ((server->tcpStatus != CifsExiting) &&
 	       (server->tcpStatus != CifsGood)) {
@@ -2175,7 +2175,7 @@
 			to the struct since the kernel thread not created yet
 			so no need to spinlock this init of tcpStatus */
 			srvTcp->tcpStatus = CifsNew;
-			init_MUTEX(&srvTcp->tcpSem);
+			mutex_init(&srvTcp->srv_mutex);
 
 			/*
 			 * since we're in a cifs function already, we know that