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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/drivers/usb/serial/ark3116.c
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@@ -189,16 +189,6 @@
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 	return 0;
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 }
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-static void ark3116_init_termios(struct tty_struct *tty)
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-{
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-	struct ktermios *termios = &tty->termios;
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-	*termios = tty_std_termios;
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-	termios->c_cflag = B9600 | CS8
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-				      | CREAD | HUPCL | CLOCAL;
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-	termios->c_ispeed = 9600;
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-	termios->c_ospeed = 9600;
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-}
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-
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 static void ark3116_set_termios(struct tty_struct *tty,
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 				struct usb_serial_port *port,
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 				struct ktermios *old_termios)
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@@ -397,38 +387,16 @@
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 	return result;
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 }
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-static int ark3116_get_serial_info(struct usb_serial_port *port,
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-			struct serial_struct __user *retinfo)
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-{
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-	struct serial_struct tmp;
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-
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-	memset(&tmp, 0, sizeof(tmp));
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-
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-	tmp.type = PORT_16654;
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-	tmp.line = port->minor;
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-	tmp.port = port->port_number;
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-	tmp.baud_base = 460800;
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-
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-	if (copy_to_user(retinfo, &tmp, sizeof(tmp)))
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-		return -EFAULT;
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-
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-	return 0;
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-}
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-
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-static int ark3116_ioctl(struct tty_struct *tty,
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-			 unsigned int cmd, unsigned long arg)
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+static int ark3116_get_serial_info(struct tty_struct *tty,
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+			struct serial_struct *ss)
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 {
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 	struct usb_serial_port *port = tty->driver_data;
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-	void __user *user_arg = (void __user *)arg;
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-	switch (cmd) {
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-	case TIOCGSERIAL:
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-		return ark3116_get_serial_info(port, user_arg);
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-	default:
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-		break;
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-	}
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-
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-	return -ENOIOCTLCMD;
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+	ss->type = PORT_16654;
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+	ss->line = port->minor;
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+	ss->port = port->port_number;
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+	ss->baud_base = 460800;
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+	return 0;
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 }
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 static int ark3116_tiocmget(struct tty_struct *tty)
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@@ -667,8 +635,7 @@
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 	.port_probe =		ark3116_port_probe,
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 	.port_remove =		ark3116_port_remove,
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 	.set_termios =		ark3116_set_termios,
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-	.init_termios =		ark3116_init_termios,
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-	.ioctl =		ark3116_ioctl,
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+	.get_serial =		ark3116_get_serial_info,
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 	.tiocmget =		ark3116_tiocmget,
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 	.tiocmset =		ark3116_tiocmset,
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 	.tiocmiwait =		usb_serial_generic_tiocmiwait,