serial: pch_uart: use offset_in_page() macro

Use offset_in_page() macro instead of open-coding.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 42caccb5e87eeabf732872225ef1527f427acea6..d3796dc26fa9a4e4ffd2deec9ff1053bf7a4a3a3 100644 (file)
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -878,8 +878,7 @@ static int dma_handle_rx(struct eg20t_port *priv)
        sg_dma_len(sg) = priv->trigger_level;
 
        sg_set_page(&priv->sg_rx, virt_to_page(priv->rx_buf_virt),
-                    sg_dma_len(sg), (unsigned long)priv->rx_buf_virt &
-                    ~PAGE_MASK);
+                    sg_dma_len(sg), offset_in_page(priv->rx_buf_virt));
 
        sg_dma_address(sg) = priv->rx_buf_dma;