diff --git a/[refs] b/[refs]
index 4e07c2c6239d..01fc9e1f3f20 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c6f83f386c2f7987a344368e33e55840c12bd38f
+refs/heads/master: 2a540edf7bb02f3e968d1ce7cb355e740ba7de13
diff --git a/trunk/drivers/usb/dwc3/core.c b/trunk/drivers/usb/dwc3/core.c
index 4f2ef5345392..08a5738a6e1b 100644
--- a/trunk/drivers/usb/dwc3/core.c
+++ b/trunk/drivers/usb/dwc3/core.c
@@ -99,6 +99,7 @@ void dwc3_put_device_id(int id)
 
 	ret = test_bit(id, dwc3_devs);
 	WARN(!ret, "dwc3: ID %d not in use\n", id);
+	smp_mb__before_clear_bit();
 	clear_bit(id, dwc3_devs);
 }
 EXPORT_SYMBOL_GPL(dwc3_put_device_id);