1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index b3497d7e535..338b15c0a54 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -1104,11 +1104,13 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
         /* update the per-port timeout */
         uart_update_timeout(port, termios->c_cflag, baud);
 
-        /* save/disable interrupts and drain transmitter */
+        /*
+         * save/disable interrupts. The tty layer will ensure that the
+         * transmitter is empty if requested by the caller, so there's
+         * no need to wait for it here.
+         */
         imr = UART_GET_IMR(port);
         UART_PUT_IDR(port, -1);
-        while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY))
-                cpu_relax();
 
         /* disable receiver and transmitter */
         UART_PUT_CR(port, ATMEL_US_TXDIS | ATMEL_US_RXDIS);