diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index ff658a8..d5cbef3 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -137,7 +137,7 @@
 		 * out of the main execution path
 		 */
 		rsr = readw(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
-		if (rsr & UART01x_RSR_ANY) {
+		if (unlikely(rsr & UART01x_RSR_ANY)) {
 			if (rsr & UART01x_RSR_BE) {
 				rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
 				uap->port.icount.brk++;