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| author | Al Viro <viro@zeniv.linux.org.uk> | 2018-09-12 04:29:55 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2018-10-13 06:50:33 +0200 |
| commit | 5099d234a52a0a9a9c6acbe8c9ee286a73ac1aed (patch) | |
| tree | a5359f1511d4b1f9495855af8107464658890b9d | |
| parent | mxser: switch to ->[sg]et_serial() (diff) | |
| download | linux-5099d234a52a0a9a9c6acbe8c9ee286a73ac1aed.tar.xz linux-5099d234a52a0a9a9c6acbe8c9ee286a73ac1aed.zip | |
serial_core: switch to ->[sg]et_serial()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 38 |
1 files changed, 12 insertions, 26 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 80bb56facfb6..2c8162b8ebf2 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -778,17 +778,13 @@ out: return ret; } -static int uart_get_info_user(struct tty_port *port, - struct serial_struct __user *retinfo) +static int uart_get_info_user(struct tty_struct *tty, + struct serial_struct *ss) { - struct serial_struct tmp; - - if (uart_get_info(port, &tmp) < 0) - return -EIO; + struct uart_state *state = tty->driver_data; + struct tty_port *port = &state->port; - if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) - return -EFAULT; - return 0; + return uart_get_info(port, ss) < 0 ? -EIO : 0; } static int uart_set_info(struct tty_struct *tty, struct tty_port *port, @@ -990,16 +986,13 @@ static int uart_set_info(struct tty_struct *tty, struct tty_port *port, return retval; } -static int uart_set_info_user(struct tty_struct *tty, struct uart_state *state, - struct serial_struct __user *newinfo) +static int uart_set_info_user(struct tty_struct *tty, struct serial_struct *ss) { - struct serial_struct new_serial; + struct uart_state *state = tty->driver_data; struct tty_port *port = &state->port; int retval; - if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) - return -EFAULT; - + down_write(&tty->termios_rwsem); /* * This semaphore protects port->count. It is also * very useful to prevent opens. Also, take the @@ -1008,8 +1001,9 @@ static int uart_set_info_user(struct tty_struct *tty, struct uart_state *state, * under us. */ mutex_lock(&port->mutex); - retval = uart_set_info(tty, port, state, &new_serial); + retval = uart_set_info(tty, port, state, ss); mutex_unlock(&port->mutex); + up_write(&tty->termios_rwsem); return retval; } @@ -1325,16 +1319,6 @@ uart_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) * These ioctls don't rely on the hardware to be present. */ switch (cmd) { - case TIOCGSERIAL: - ret = uart_get_info_user(port, uarg); - break; - - case TIOCSSERIAL: - down_write(&tty->termios_rwsem); - ret = uart_set_info_user(tty, state, uarg); - up_write(&tty->termios_rwsem); - break; - case TIOCSERCONFIG: down_write(&tty->termios_rwsem); ret = uart_do_autoconfig(tty, state); @@ -2413,6 +2397,8 @@ static const struct tty_operations uart_ops = { #endif .tiocmget = uart_tiocmget, .tiocmset = uart_tiocmset, + .set_serial = uart_set_info_user, + .get_serial = uart_get_info_user, .get_icount = uart_get_icount, #ifdef CONFIG_CONSOLE_POLL .poll_init = uart_poll_init, |