diff --git a/[refs] b/[refs]
index 5a398bfacf81..07fdda655d59 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f48ed538386cb41559282d989354e8f5d442d71c
+refs/heads/master: 1a0fd497733bd029a7d5f2e5c69b1dff715b7792
diff --git a/trunk/drivers/md/md.c b/trunk/drivers/md/md.c
index 97852099defd..9e3ce432e37e 100644
--- a/trunk/drivers/md/md.c
+++ b/trunk/drivers/md/md.c
@@ -5536,6 +5536,8 @@ void md_allow_write(mddev_t *mddev)
 		return;
 	if (mddev->ro)
 		return;
+	if (!mddev->pers->sync_request)
+		return;
 
 	spin_lock_irq(&mddev->write_lock);
 	if (mddev->in_sync) {