Use offset_in_page() macro instead of open-coding.
Signed-off-by: Geliang Tang <geliangt...@gmail.com>
---
Changes in v2:
- include mm.h
---
drivers/tty/serial/atmel_serial.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/atmel_serial.c
b/drivers/tty/serial/atmel_serial.c
index c355ac9..d25f044 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -46,6 +46,7 @@
#include <linux/err.h>
#include <linux/irq.h>
#include <linux/suspend.h>
+#include <linux/mm.h>
#include <asm/io.h>
#include <asm/ioctls.h>
@@ -959,7 +960,7 @@ static int atmel_prepare_tx_dma(struct uart_port *port)
sg_set_page(&atmel_port->sg_tx,
virt_to_page(port->state->xmit.buf),
UART_XMIT_SIZE,
- (unsigned long)port->state->xmit.buf & ~PAGE_MASK);
+ offset_in_page(port->state->xmit.buf));
nent = dma_map_sg(port->dev,
&atmel_port->sg_tx,
1,
@@ -1141,7 +1142,7 @@ static int atmel_prepare_rx_dma(struct uart_port *port)
sg_set_page(&atmel_port->sg_rx,
virt_to_page(ring->buf),
sizeof(struct atmel_uart_char) * ATMEL_SERIAL_RINGSIZE,
- (unsigned long)ring->buf & ~PAGE_MASK);
+ offset_in_page(ring->buf));
nent = dma_map_sg(port->dev,
&atmel_port->sg_rx,
1,
--
2.9.3
