From cb1676a61a83f9a01517abd496f080bf7d56168e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 21 Mar 2013 12:36:55 +0100 Subject: [PATCH] USB: ftdi_sio: use port icount Use the port-data icount for interrupt counters. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 31 ++++++++++++++----------------- 1 file changed, 14 insertions(+), 17 deletions(-) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index c575738..ea7433e 100644 --- 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)) || -- 2.7.4