diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index ffcbf6eaf5f98723a3bc456408e7660a2599c64b..d8b73e791a554823f942893453c0c9b6c8b9ae87 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1467,10 +1467,11 @@ static void work_fn_rx(struct work_struct *work)
 		dev_dbg(port->dev, "Read %u bytes with cookie %d\n", read,
 			s->active_rx);
 
-		count = sci_dma_rx_push(s, s->rx_buf[new], read);
-
-		if (count)
-			tty_flip_buffer_push(&port->state->port);
+		if (read) {
+			count = sci_dma_rx_push(s, s->rx_buf[new], read);
+			if (count)
+				tty_flip_buffer_push(&port->state->port);
+		}
 
 		spin_unlock_irqrestore(&port->lock, flags);