USB: ftdi_sio: use port icount

Use the port-data icount for interrupt counters.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index c575738..ea7433e 100644 (file)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -67,7 +67,6 @@ struct ftdi_private {
                                 */
        int flags;              /* some ASYNC_xxxx flags are supported */
        unsigned long last_dtr_rts;     /* saved modem control outputs */
-       struct async_icount     icount;
        char prev_status;        /* Used for TIOCMIWAIT */
        char transmit_empty;    /* If transmitter is empty or not */
        __u16 interface;        /* FT2232C, FT2232H or FT4232H port interface
@@ -1909,7 +1908,7 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port,
                        c = kfifo_out(&port->write_fifo, &buffer[i + 1], len);
                        if (!c)
                                break;
-                       priv->icount.tx += c;
+                       port->icount.tx += c;
                        buffer[i] = (c << 2) + 1;
                        count += c + 1;
                }
@@ -1917,7 +1916,7 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port,
        } else {
                count = kfifo_out_locked(&port->write_fifo, dest, size,
                                                                &port->lock);
-               priv->icount.tx += count;
+               port->icount.tx += count;
        }
 
        return count;
@@ -1946,13 +1945,13 @@ static int ftdi_process_packet(struct usb_serial_port *port,
                char diff_status = status ^ priv->prev_status;
 
                if (diff_status & FTDI_RS0_CTS)
-                       priv->icount.cts++;
+                       port->icount.cts++;
                if (diff_status & FTDI_RS0_DSR)
-                       priv->icount.dsr++;
+                       port->icount.dsr++;
                if (diff_status & FTDI_RS0_RI)
-                       priv->icount.rng++;
+                       port->icount.rng++;
                if (diff_status & FTDI_RS0_RLSD)
-                       priv->icount.dcd++;
+                       port->icount.dcd++;
 
                wake_up_interruptible(&port->delta_msr_wait);
                priv->prev_status = status;
@@ -1964,18 +1963,18 @@ static int ftdi_process_packet(struct usb_serial_port *port,
                 * over framing errors */
                if (packet[1] & FTDI_RS_BI) {
                        flag = TTY_BREAK;
-                       priv->icount.brk++;
+                       port->icount.brk++;
                        usb_serial_handle_break(port);
                } else if (packet[1] & FTDI_RS_PE) {
                        flag = TTY_PARITY;
-                       priv->icount.parity++;
+                       port->icount.parity++;
                } else if (packet[1] & FTDI_RS_FE) {
                        flag = TTY_FRAME;
-                       priv->icount.frame++;
+                       port->icount.frame++;
                }
                /* Overrun is special, not associated with a char */
                if (packet[1] & FTDI_RS_OE) {
-                       priv->icount.overrun++;
+                       port->icount.overrun++;
                        tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
                }
        }
@@ -1989,7 +1988,7 @@ static int ftdi_process_packet(struct usb_serial_port *port,
        len -= 2;
        if (!len)
                return 0;       /* status only */
-       priv->icount.rx += len;
+       port->icount.rx += len;
        ch = packet + 2;
 
        if (port->port.console && port->sysrq) {
@@ -2357,8 +2356,7 @@ static int ftdi_get_icount(struct tty_struct *tty,
                                struct serial_icounter_struct *icount)
 {
        struct usb_serial_port *port = tty->driver_data;
-       struct ftdi_private *priv = usb_get_serial_port_data(port);
-       struct async_icount *ic = &priv->icount;
+       struct async_icount *ic = &port->icount;
 
        icount->cts = ic->cts;
        icount->dsr = ic->dsr;
@@ -2378,7 +2376,6 @@ static int ftdi_ioctl(struct tty_struct *tty,
                                        unsigned int cmd, unsigned long arg)
 {
        struct usb_serial_port *port = tty->driver_data;
-       struct ftdi_private *priv = usb_get_serial_port_data(port);
        struct async_icount cnow;
        struct async_icount cprev;
 
@@ -2404,7 +2401,7 @@ static int ftdi_ioctl(struct tty_struct *tty,
         * This code is borrowed from linux/drivers/char/serial.c
         */
        case TIOCMIWAIT:
-               cprev = priv->icount;
+               cprev = port->icount;
                for (;;) {
                        interruptible_sleep_on(&port->delta_msr_wait);
                        /* see if a signal did it */
@@ -2414,7 +2411,7 @@ static int ftdi_ioctl(struct tty_struct *tty,
                        if (port->serial->disconnected)
                                return -EIO;
 
-                       cnow = priv->icount;
+                       cnow = port->icount;
                        if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
                            ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
                            ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||