diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 12442748d69f35851de1586461303aa94e731a37..1f5505e7f90dd9de0c84770a164c3a1d95968dc4 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -1466,7 +1466,7 @@ s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
 	unsigned int ufcon = rd_regl(port, S3C2410_UFCON);
 
 	while (!s3c24xx_serial_console_txrdy(port, ufcon))
-		barrier();
+		cpu_relax();
 	wr_regb(port, S3C2410_UTXH, ch);
 }