On 22/04/2017 03:21, Geliang Tang wrote: > Use offset_in_page() macro instead of open-coding. > > Signed-off-by: Geliang Tang <geliangt...@gmail.com> > --- > 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, > I guess you want to #include <linux/mm.h> (even if it compiles ok without it)
Regards, Richard.
