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USB: ftdi_sio: use port icount

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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>
This commit is contained in:
Johan Hovold 2013-03-21 12:36:55 +01:00 committed by Greg Kroah-Hartman
parent befefcda4b
commit cb1676a61a
1 changed files with 14 additions and 17 deletions
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31
drivers/usb/serial/ftdi_sio.c
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@ -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)) ||