[PATCH] Serial: Ensure error paths are marked with unlikely()

Ensure ARM serial driver error paths are marked with the
unlikely() compiler hint.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index ff658a830f34..d5cbef3fe8b6 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -137,7 +137,7 @@ pl011_rx_chars(struct uart_amba_port *uap)
                  * 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++;