[PATCH] tty/serial: atmel: use offset_in_page() macro
From: Geliang Tang
Date: Fri Apr 21 2017 - 21:23:11 EST
Use offset_in_page() macro instead of open-coding.
Signed-off-by: Geliang Tang <geliangtang@xxxxxxxxx>
---
drivers/tty/serial/atmel_serial.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index c355ac9..f398db8 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -959,7 +959,7 @@ 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 +1141,7 @@ 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