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USB: ch341: replace custom ioctl operation with tiocmiwait 

Replace custom ioctl operation with tiocmiwait.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2013-03-21 12:37:00 +01:00 committed by Greg Kroah-Hartman
parent 7caed7e78c
commit 7bb98f0edd
1 changed files with 3 additions and 22 deletions
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25
drivers/usb/serial/ch341.c
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@ -500,8 +500,9 @@ exit:
__func__, status);
}
static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
static int ch341_tiocmiwait(struct tty_struct *tty, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
struct ch341_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
u8 prevstatus;
@ -542,26 +543,6 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
return 0;
}
static int ch341_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
dev_dbg(&port->dev, "%s (%d) cmd = 0x%04x\n", __func__, port->number, cmd);
switch (cmd) {
case TIOCMIWAIT:
dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number);
return wait_modem_info(port, arg);
default:
dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd);
break;
}
return -ENOIOCTLCMD;
}
static int ch341_tiocmget(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
@ -611,11 +592,11 @@ static struct usb_serial_driver ch341_device = {
.dtr_rts = ch341_dtr_rts,
.carrier_raised = ch341_carrier_raised,
.close = ch341_close,
.ioctl = ch341_ioctl,
.set_termios = ch341_set_termios,
.break_ctl = ch341_break_ctl,
.tiocmget = ch341_tiocmget,
.tiocmset = ch341_tiocmset,
.tiocmiwait = ch341_tiocmiwait,
.read_int_callback = ch341_read_int_callback,
.port_probe = ch341_port_probe,
.port_remove = ch341_port_remove,