diff --git a/[refs] b/[refs]
index 68553b62dabc..b7aca979f268 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1722770f131bb5c8e238825f3eba2efa331483a2
+refs/heads/master: 0a9e0703497013cf7a21455e51face5f048a187f
diff --git a/trunk/drivers/char/esp.c b/trunk/drivers/char/esp.c
index c01e26d9ee5e..f3fe62067344 100644
--- a/trunk/drivers/char/esp.c
+++ b/trunk/drivers/char/esp.c
@@ -2484,6 +2484,7 @@ static int __init espserial_init(void)
 			return 0;
 		}
 
+		spin_lock_init(&info->lock);
 		/* rx_trigger, tx_trigger are needed by autoconfig */
 		info->config.rx_trigger = rx_trigger;
 		info->config.tx_trigger = tx_trigger;