USB: ssu100: 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>

drivers/usb/serial/ssu100.c

@@ -61,7 +61,6 @@ struct ssu100_port_private {
 	spinlock_t status_lock;
 	u8 shadowLSR;
 	u8 shadowMSR;
-	struct async_icount icount;
 };
 
 static inline int ssu100_control_msg(struct usb_device *dev,
@@ -345,16 +344,16 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
 	unsigned long flags;
 
 	spin_lock_irqsave(&priv->status_lock, flags);
-	prev = priv->icount;
+	prev = port->icount;
 	spin_unlock_irqrestore(&priv->status_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;
@@ -363,7 +362,7 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
 			return -EIO;
 
 		spin_lock_irqsave(&priv->status_lock, flags);
-		cur = priv->icount;
+		cur = port->icount;
 		spin_unlock_irqrestore(&priv->status_lock, flags);
 
 		if ((prev.rng == cur.rng) &&
@@ -381,30 +380,6 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
 	return 0;
 }
 
-static int ssu100_get_icount(struct tty_struct *tty,
-			struct serial_icounter_struct *icount)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct ssu100_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 ssu100_ioctl(struct tty_struct *tty,
 		    unsigned int cmd, unsigned long arg)
 {
@@ -527,13 +502,13 @@ static void ssu100_update_msr(struct usb_serial_port *port, u8 msr)
 	if (msr & UART_MSR_ANY_DELTA) {
 		/* update input line counters */
 		if (msr & UART_MSR_DCTS)
-			priv->icount.cts++;
+			port->icount.cts++;
 		if (msr & UART_MSR_DDSR)
-			priv->icount.dsr++;
+			port->icount.dsr++;
 		if (msr & UART_MSR_DDCD)
-			priv->icount.dcd++;
+			port->icount.dcd++;
 		if (msr & UART_MSR_TERI)
-			priv->icount.rng++;
+			port->icount.rng++;
 		wake_up_interruptible(&port->delta_msr_wait);
 	}
 }
@@ -553,22 +528,22 @@ static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr,
 		/* we always want to update icount, but we only want to
 		 * update tty_flag for one case */
 		if (lsr & UART_LSR_BI) {
-			priv->icount.brk++;
+			port->icount.brk++;
 			*tty_flag = TTY_BREAK;
 			usb_serial_handle_break(port);
 		}
 		if (lsr & UART_LSR_PE) {
-			priv->icount.parity++;
+			port->icount.parity++;
 			if (*tty_flag == TTY_NORMAL)
 				*tty_flag = TTY_PARITY;
 		}
 		if (lsr & UART_LSR_FE) {
-			priv->icount.frame++;
+			port->icount.frame++;
 			if (*tty_flag == TTY_NORMAL)
 				*tty_flag = TTY_FRAME;
 		}
 		if (lsr & UART_LSR_OE){
-			priv->icount.overrun++;
+			port->icount.overrun++;
 			if (*tty_flag == TTY_NORMAL)
 				*tty_flag = TTY_OVERRUN;
 		}
@@ -632,7 +607,7 @@ static struct usb_serial_driver ssu100_device = {
 	.process_read_urb    = ssu100_process_read_urb,
 	.tiocmget            = ssu100_tiocmget,
 	.tiocmset            = ssu100_tiocmset,
-	.get_icount	     = ssu100_get_icount,
+	.get_icount	     = usb_serial_generic_get_icount,
 	.ioctl               = ssu100_ioctl,
 	.set_termios         = ssu100_set_termios,
 };