[PATCH 3/4] tty/serial: atmel: use true,false for bool variable

[zhengbin <zhengbin13@huawei.com>]

Fixes coccicheck warning:

drivers/tty/serial/atmel_serial.c:1062:1-23: WARNING: Assignment of 0/1 to bool variable
drivers/tty/serial/atmel_serial.c:1261:1-23: WARNING: Assignment of 0/1 to bool variable
drivers/tty/serial/atmel_serial.c:1688:3-25: WARNING: Assignment of 0/1 to bool variable

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
---
 drivers/tty/serial/atmel_serial.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index fa19eb3..181da0c 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1059,7 +1059,7 @@ static int atmel_prepare_tx_dma(struct uart_port *port)

 chan_err:
 	dev_err(port->dev, "TX channel not available, switch to pio\n");
-	atmel_port->use_dma_tx = 0;
+	atmel_port->use_dma_tx = false;
 	if (atmel_port->chan_tx)
 		atmel_release_tx_dma(port);
 	return -EINVAL;
@@ -1258,7 +1258,7 @@ static int atmel_prepare_rx_dma(struct uart_port *port)

 chan_err:
 	dev_err(port->dev, "RX channel not available, switch to pio\n");
-	atmel_port->use_dma_rx = 0;
+	atmel_port->use_dma_rx = false;
 	if (atmel_port->chan_rx)
 		atmel_release_rx_dma(port);
 	return -EINVAL;
@@ -1685,7 +1685,7 @@ static int atmel_prepare_rx_pdc(struct uart_port *port)
 					DMA_FROM_DEVICE);
 				kfree(atmel_port->pdc_rx[0].buf);
 			}
-			atmel_port->use_pdc_rx = 0;
+			atmel_port->use_pdc_rx = false;
 			return -ENOMEM;
 		}
 		pdc->dma_addr = dma_map_single(port->dev,
--
2.7.4