diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index db8f472..d165f42 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -1340,9 +1340,8 @@
 
 static void cypress_buf_free(struct cypress_buf *cb)
 {
-	if (cb != NULL) {
-		if (cb->buf_buf != NULL)
-			kfree(cb->buf_buf);
+	if (cb) {
+		kfree(cb->buf_buf);
 		kfree(cb);
 	}
 }