diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/max310x.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index 8dec480a73df..5836168414e4 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -876,6 +876,7 @@ static void max310x_set_termios(struct uart_port *port, static int max310x_ioctl(struct uart_port *port, unsigned int cmd, unsigned long arg) { +#if defined(TIOCSRS485) && defined(TIOCGRS485) struct serial_rs485 rs485; unsigned int val; @@ -903,7 +904,7 @@ static int max310x_ioctl(struct uart_port *port, unsigned int cmd, max310x_port_update(port, MAX310X_MODE2_REG, MAX310X_MODE2_ECHOSUPR_BIT, 0); } - break; + return 0; case TIOCGRS485: memset(&rs485, 0, sizeof(rs485)); val = max310x_port_read(port, MAX310X_MODE1_REG); @@ -916,12 +917,13 @@ static int max310x_ioctl(struct uart_port *port, unsigned int cmd, if (copy_to_user((struct serial_rs485 *)arg, &rs485, sizeof(rs485))) return -EFAULT; - break; + return 0; default: - return -ENOIOCTLCMD; + break; } +#endif - return 0; + return -ENOIOCTLCMD; } static int max310x_startup(struct uart_port *port) |