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USB: mct_u232: switch to generic get_icount implementation 

Switch to the generic get_icount implementation.

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 12:37:12 +01:00 committed by Greg Kroah-Hartman
parent 09b0e39575
commit 468c740ee5
1 changed files with 4 additions and 36 deletions
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40
drivers/usb/serial/mct_u232.c
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@ -59,8 +59,6 @@ static int mct_u232_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear);
static int mct_u232_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg);
static int mct_u232_get_icount(struct tty_struct *tty,
struct serial_icounter_struct *icount);
static void mct_u232_throttle(struct tty_struct *tty);
static void mct_u232_unthrottle(struct tty_struct *tty);
@ -99,7 +97,7 @@ static struct usb_serial_driver mct_u232_device = {
.port_probe = mct_u232_port_probe,
.port_remove = mct_u232_port_remove,
.ioctl = mct_u232_ioctl,
.get_icount = mct_u232_get_icount,
.get_icount = usb_serial_generic_get_icount,
};
static struct usb_serial_driver * const serial_drivers[] = {
@ -113,7 +111,6 @@ struct mct_u232_private {
unsigned char last_lsr; /* Line Status Register */
unsigned char last_msr; /* Modem Status Register */
unsigned int rx_flags; /* Throttling flags */
struct async_icount icount;
};
#define THROTTLED 0x01
@ -570,7 +567,7 @@ static void mct_u232_read_int_callback(struct urb *urb)
/* Record Control Line states */
mct_u232_msr_to_state(port, &priv->control_state, priv->last_msr);
mct_u232_msr_to_icount(&priv->icount, priv->last_msr);
mct_u232_msr_to_icount(&port->icount, priv->last_msr);
#if 0
/* Not yet handled. See belkin_sa.c for further information */
@ -804,7 +801,7 @@ static int mct_u232_ioctl(struct tty_struct *tty,
dev_dbg(&port->dev, "%s TIOCMIWAIT", __func__);
spin_lock_irqsave(&mct_u232_port->lock, flags);
cprev = mct_u232_port->icount;
cprev = port->icount;
spin_unlock_irqrestore(&mct_u232_port->lock, flags);
for ( ; ; ) {
prepare_to_wait(&port->delta_msr_wait,
@ -819,7 +816,7 @@ static int mct_u232_ioctl(struct tty_struct *tty,
return -EIO;
spin_lock_irqsave(&mct_u232_port->lock, flags);
cnow = mct_u232_port->icount;
cnow = port->icount;
spin_unlock_irqrestore(&mct_u232_port->lock, flags);
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
@ -837,35 +834,6 @@ static int mct_u232_ioctl(struct tty_struct *tty,
return -ENOIOCTLCMD;
}
static int mct_u232_get_icount(struct tty_struct *tty,
struct serial_icounter_struct *icount)
{
struct usb_serial_port *port = tty->driver_data;
struct mct_u232_private *mct_u232_port = usb_get_serial_port_data(port);
struct async_icount *ic = &mct_u232_port->icount;
unsigned long flags;
spin_lock_irqsave(&mct_u232_port->lock, flags);
icount->cts = ic->cts;
icount->dsr = ic->dsr;
icount->rng = ic->rng;
icount->dcd = ic->dcd;
icount->rx = ic->rx;
icount->tx = ic->tx;
icount->frame = ic->frame;
icount->overrun = ic->overrun;
icount->parity = ic->parity;
icount->brk = ic->brk;
icount->buf_overrun = ic->buf_overrun;
spin_unlock_irqrestore(&mct_u232_port->lock, flags);
dev_dbg(&port->dev, "%s TIOCGICOUNT RX=%d, TX=%d\n",
__func__, icount->rx, icount->tx);
return 0;
}
module_usb_serial_driver(serial_drivers, id_table);
MODULE_AUTHOR(DRIVER_AUTHOR);