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path: root/drivers/tty/serial/atmel_serial.c
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Diffstat (limited to 'drivers/tty/serial/atmel_serial.c')
-rw-r--r--drivers/tty/serial/atmel_serial.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 4c823f341d9..10605ecc99a 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -212,8 +212,9 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
unsigned int mode;
+ unsigned long flags;
- spin_lock(&port->lock);
+ spin_lock_irqsave(&port->lock, flags);
/* Disable interrupts */
UART_PUT_IDR(port, atmel_port->tx_done_mask);
@@ -244,7 +245,7 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
/* Enable interrupts */
UART_PUT_IER(port, atmel_port->tx_done_mask);
- spin_unlock(&port->lock);
+ spin_unlock_irqrestore(&port->lock, flags);
}
@@ -1256,12 +1257,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
static void atmel_set_ldisc(struct uart_port *port, int new)
{
- int line = port->line;
-
- if (line >= port->state->port.tty->driver->num)
- return;
-
- if (port->state->port.tty->ldisc->ops->num == N_PPS) {
+ if (new == N_PPS) {
port->flags |= UPF_HARDPPS_CD;
atmel_enable_ms(port);
} else {