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USB: quatech2: 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 12:37:22 +01:00 committed by Greg Kroah-Hartman
parent 6d0cad657a
commit 0a4142fb9c
1 changed files with 12 additions and 39 deletions
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51
drivers/usb/serial/quatech2.c
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@ -128,8 +128,6 @@ struct qt2_port_private {
u8 shadowLSR;
u8 shadowMSR;
struct async_icount icount;
struct usb_serial_port *port;
};
@ -501,16 +499,16 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
unsigned long flags;
spin_lock_irqsave(&priv->lock, flags);
prev = priv->icount;
prev = port->icount;
spin_unlock_irqrestore(&priv->lock, flags);
while (1) {
wait_event_interruptible(port->delta_msr_wait,
(port->serial->disconnected ||
(priv->icount.rng != prev.rng) ||
(priv->icount.dsr != prev.dsr) ||
(priv->icount.dcd != prev.dcd) ||
(priv->icount.cts != prev.cts)));
(port->icount.rng != prev.rng) ||
(port->icount.dsr != prev.dsr) ||
(port->icount.dcd != prev.dcd) ||
(port->icount.cts != prev.cts)));
if (signal_pending(current))
return -ERESTARTSYS;
@ -519,7 +517,7 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
return -EIO;
spin_lock_irqsave(&priv->lock, flags);
cur = priv->icount;
cur = port->icount;
spin_unlock_irqrestore(&priv->lock, flags);
if ((prev.rng == cur.rng) &&
@ -537,28 +535,6 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
return 0;
}
static int qt2_get_icount(struct tty_struct *tty,
struct serial_icounter_struct *icount)
{
struct usb_serial_port *port = tty->driver_data;
struct qt2_port_private *priv = usb_get_serial_port_data(port);
struct async_icount cnow = priv->icount;
icount->cts = cnow.cts;
icount->dsr = cnow.dsr;
icount->rng = cnow.rng;
icount->dcd = cnow.dcd;
icount->rx = cnow.rx;
icount->tx = cnow.tx;
icount->frame = cnow.frame;
icount->overrun = cnow.overrun;
icount->parity = cnow.parity;
icount->brk = cnow.brk;
icount->buf_overrun = cnow.buf_overrun;
return 0;
}
static int qt2_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
@ -958,16 +934,13 @@ static void qt2_update_msr(struct usb_serial_port *port, unsigned char *ch)
if (newMSR & UART_MSR_ANY_DELTA) {
/* update input line counters */
if (newMSR & UART_MSR_DCTS)
port_priv->icount.cts++;
port->icount.cts++;
if (newMSR & UART_MSR_DDSR)
port_priv->icount.dsr++;
port->icount.dsr++;
if (newMSR & UART_MSR_DDCD)
port_priv->icount.dcd++;
port->icount.dcd++;
if (newMSR & UART_MSR_TERI)
port_priv->icount.rng++;
port->icount.rng++;
wake_up_interruptible(&port->delta_msr_wait);
}
@ -989,7 +962,7 @@ static void qt2_update_lsr(struct usb_serial_port *port, unsigned char *ch)
port_priv->shadowLSR = newLSR;
spin_unlock_irqrestore(&port_priv->lock, flags);
icount = &port_priv->icount;
icount = &port->icount;
if (newLSR & UART_LSR_BRK_ERROR_BITS) {
@ -1099,7 +1072,7 @@ static struct usb_serial_driver qt2_device = {
.break_ctl = qt2_break_ctl,
.tiocmget = qt2_tiocmget,
.tiocmset = qt2_tiocmset,
.get_icount = qt2_get_icount,
.get_icount = usb_serial_generic_get_icount,
.ioctl = qt2_ioctl,
.set_termios = qt2_set_termios,
};