[PATCH 6/9] ARM: meson: serial: use meson_uart_tx_empty() to wait for empty

[Ben Dooks]

Use the meson_uart_tx_empty() instead of a direct read of the status
register. This is easier to read and will ensure the UART's transmit
state machine is idle when trying to update the baud rate.

Signed-off-by: Ben Dooks <ben.dooks at codethink.co.uk>
---
 drivers/tty/serial/meson_uart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 9327efd..d3f2c96 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -285,7 +285,7 @@ static void meson_uart_change_speed(struct uart_port *port, unsigned long baud)
 {
 	u32 val;
 
-	while (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_EMPTY))
+	while (!meson_uart_tx_empty(port))
 		cpu_relax();
 
 	val = readl(port->membase + AML_UART_REG5);
-- 
2.6.2