fdti_sio: switch to ->[sg]et_serial() (3ae36bed) · Commits · EulixOS / Software / Kernel

drivers/usb/serial/ftdi_sio.c

+21 −27

Original line number	Diff line number	Diff line
		@@ -1055,6 +1055,10 @@ static int ftdi_tiocmset(struct tty_struct *tty,
		unsigned int set, unsigned int clear);
		static int ftdi_ioctl(struct tty_struct *tty,
		unsigned int cmd, unsigned long arg);
		static int get_serial_info(struct tty_struct *tty,
		struct serial_struct *ss);
		static int set_serial_info(struct tty_struct *tty,
		struct serial_struct *ss);
		static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
		static bool ftdi_tx_empty(struct usb_serial_port *port);
		static int ftdi_get_modem_status(struct usb_serial_port *port,
		@@ -1091,6 +1095,8 @@ static struct usb_serial_driver ftdi_sio_device = {
		.tiocmiwait = usb_serial_generic_tiocmiwait,
		.get_icount = usb_serial_generic_get_icount,
		.ioctl = ftdi_ioctl,
		.get_serial = get_serial_info,
		.set_serial = set_serial_info,
		.set_termios = ftdi_set_termios,
		.break_ctl = ftdi_break_ctl,
		.tx_empty = ftdi_tx_empty,
		@@ -1443,48 +1449,42 @@ static int read_latency_timer(struct usb_serial_port *port)
		return 0;
		}

		static int get_serial_info(struct usb_serial_port *port,
		struct serial_struct __user *retinfo)
		static int get_serial_info(struct tty_struct *tty,
		struct serial_struct *ss)
		{
		struct usb_serial_port *port = tty->driver_data;
		struct ftdi_private *priv = usb_get_serial_port_data(port);
		struct serial_struct tmp;

		memset(&tmp, 0, sizeof(tmp));
		tmp.flags = priv->flags;
		tmp.baud_base = priv->baud_base;
		tmp.custom_divisor = priv->custom_divisor;
		if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
		return -EFAULT;
		ss->flags = priv->flags;
		ss->baud_base = priv->baud_base;
		ss->custom_divisor = priv->custom_divisor;
		return 0;
		}

		static int set_serial_info(struct tty_struct *tty,
		struct usb_serial_port port, struct serial_struct __user newinfo)
		struct serial_struct *ss)
		{
		struct usb_serial_port *port = tty->driver_data;
		struct ftdi_private *priv = usb_get_serial_port_data(port);
		struct serial_struct new_serial;
		struct ftdi_private old_priv;

		if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
		return -EFAULT;

		mutex_lock(&priv->cfg_lock);
		old_priv = *priv;

		/* Do error checking and permission checking */

		if (!capable(CAP_SYS_ADMIN)) {
		if ((new_serial.flags ^ priv->flags) & ~ASYNC_USR_MASK) {
		if ((ss->flags ^ priv->flags) & ~ASYNC_USR_MASK) {
		mutex_unlock(&priv->cfg_lock);
		return -EPERM;
		}
		priv->flags = ((priv->flags & ~ASYNC_USR_MASK) \|
		(new_serial.flags & ASYNC_USR_MASK));
		priv->custom_divisor = new_serial.custom_divisor;
		(ss->flags & ASYNC_USR_MASK));
		priv->custom_divisor = ss->custom_divisor;
		goto check_and_exit;
		}

		if (new_serial.baud_base != priv->baud_base) {
		if (ss->baud_base != priv->baud_base) {
		mutex_unlock(&priv->cfg_lock);
		return -EINVAL;
		}
		@@ -1492,8 +1492,8 @@ static int set_serial_info(struct tty_struct *tty,
		/* Make the changes - these are privileged changes! */

		priv->flags = ((priv->flags & ~ASYNC_FLAGS) \|
		(new_serial.flags & ASYNC_FLAGS));
		priv->custom_divisor = new_serial.custom_divisor;
		(ss->flags & ASYNC_FLAGS));
		priv->custom_divisor = ss->custom_divisor;

		check_and_exit:
		write_latency_timer(port);
		@@ -1507,9 +1507,7 @@ static int set_serial_info(struct tty_struct *tty,
		dev_warn_ratelimited(&port->dev, "use of SPD flags is deprecated\n");

		change_speed(tty, port);
		mutex_unlock(&priv->cfg_lock);
		}
		else
		mutex_unlock(&priv->cfg_lock);
		return 0;
		}
		@@ -2452,10 +2450,6 @@ static int ftdi_ioctl(struct tty_struct *tty,
		void __user argp = (void __user )arg;

		switch (cmd) {
		case TIOCGSERIAL:
		return get_serial_info(port, argp);
		case TIOCSSERIAL:
		return set_serial_info(tty, port, argp);
		case TIOCSERGETLSR:
		return get_lsr_info(port, argp);
		default: