diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 1208a78..d930d4d 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -369,6 +369,7 @@
 					get_unaligned_le16(seq);
 			}
 		}
+		spin_lock_init(&key->u.tkip.txlock);
 		break;
 	case WLAN_CIPHER_SUITE_CCMP:
 		key->conf.iv_len = CCMP_HDR_LEN;