diff --git a/[refs] b/[refs]
index 5249a22f9129..938dc4458d8a 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 952eca0a95e27660f7a56a7186b9bd09d791ced4
+refs/heads/master: 0cdfb819b6a97e79c7a0aa0c471cd7000367103b
diff --git a/trunk/drivers/usb/class/cdc-wdm.c b/trunk/drivers/usb/class/cdc-wdm.c
index 6ee4451bfe2d..47085e5879ab 100644
--- a/trunk/drivers/usb/class/cdc-wdm.c
+++ b/trunk/drivers/usb/class/cdc-wdm.c
@@ -342,7 +342,7 @@ static ssize_t wdm_write
 		goto outnp;
 	}
 
-	if (!file->f_flags && O_NONBLOCK)
+	if (!(file->f_flags & O_NONBLOCK))
 		r = wait_event_interruptible(desc->wait, !test_bit(WDM_IN_USE,
 								&desc->flags));
 	else