From: Al Viro <v...@zeniv.linux.org.uk> Signed-off-by: Al Viro <v...@zeniv.linux.org.uk> --- drivers/staging/greybus/uart.c | 47 ++++++++++++++++-------------------------- 1 file changed, 18 insertions(+), 29 deletions(-)
diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c index 8a006323c3c1..3313cb0b60af 100644 --- a/drivers/staging/greybus/uart.c +++ b/drivers/staging/greybus/uart.c @@ -616,40 +616,33 @@ static void gb_tty_unthrottle(struct tty_struct *tty) } } -static int get_serial_info(struct gb_tty *gb_tty, - struct serial_struct __user *info) +static int get_serial_info(struct tty_struct *tty, + struct serial_struct *ss) { - struct serial_struct tmp; - - memset(&tmp, 0, sizeof(tmp)); - tmp.type = PORT_16550A; - tmp.line = gb_tty->minor; - tmp.xmit_fifo_size = 16; - tmp.baud_base = 9600; - tmp.close_delay = gb_tty->port.close_delay / 10; - tmp.closing_wait = + struct gb_tty *gb_tty = tty->driver_data; + + ss->type = PORT_16550A; + ss->line = gb_tty->minor; + ss->xmit_fifo_size = 16; + ss->baud_base = 9600; + ss->close_delay = gb_tty->port.close_delay / 10; + ss->closing_wait = gb_tty->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? ASYNC_CLOSING_WAIT_NONE : gb_tty->port.closing_wait / 10; - - if (copy_to_user(info, &tmp, sizeof(tmp))) - return -EFAULT; return 0; } -static int set_serial_info(struct gb_tty *gb_tty, - struct serial_struct __user *newinfo) +static int set_serial_info(struct tty_struct *tty, + struct serial_struct *ss) { - struct serial_struct new_serial; + struct gb_tty *gb_tty = tty->driver_data; unsigned int closing_wait; unsigned int close_delay; int retval = 0; - if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) - return -EFAULT; - - close_delay = new_serial.close_delay * 10; - closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ? - ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10; + close_delay = ss->close_delay * 10; + closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ? + ASYNC_CLOSING_WAIT_NONE : ss->closing_wait * 10; mutex_lock(&gb_tty->port.mutex); if (!capable(CAP_SYS_ADMIN)) { @@ -728,12 +721,6 @@ static int gb_tty_ioctl(struct tty_struct *tty, unsigned int cmd, struct gb_tty *gb_tty = tty->driver_data; switch (cmd) { - case TIOCGSERIAL: - return get_serial_info(gb_tty, - (struct serial_struct __user *)arg); - case TIOCSSERIAL: - return set_serial_info(gb_tty, - (struct serial_struct __user *)arg); case TIOCMIWAIT: return wait_serial_change(gb_tty, arg); } @@ -818,6 +805,8 @@ static const struct tty_operations gb_ops = { .tiocmget = gb_tty_tiocmget, .tiocmset = gb_tty_tiocmset, .get_icount = gb_tty_get_icount, + .set_serial = set_serial_info, + .get_serial = get_serial_info, }; static const struct tty_port_operations gb_port_ops = { -- 2.11.0