pch_uart: fix uart clock setting issue

Currently, uart clock is not set correctly.
This patch fixes the issue.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 68855351c76e..189886122516 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1089,7 +1089,12 @@ static int pch_uart_startup(struct uart_port *port)
 
         priv = container_of(port, struct eg20t_port, port);
         priv->tx_empty = 1;
-        port->uartclk = priv->base_baud;
+
+        if (port->uartclk)
+                priv->base_baud = port->uartclk;
+        else
+                port->uartclk = priv->base_baud;
+
         pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_ALL_INT);
         ret = pch_uart_hal_set_line(priv, default_baud,
                               PCH_UART_HAL_PARITY_NONE, PCH_UART_HAL_8BIT,