diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index 2e4ce7704908bc78e4ed2385842a1e6dbec1d59c..e96077b8bf7922b89b5feda9a9c34b3de843ab55 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -440,7 +440,7 @@ ep_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 
 	value = -ENOMEM;
 	kbuf = memdup_user(buf, len);
-	if (!kbuf) {
+	if (IS_ERR(kbuf)) {
 		value = PTR_ERR(kbuf);
 		goto free1;
 	}