USB: mos7840: switch to generic get_icount implementation
Switch to the generic get_icount implementation. Note that the interrupt counters will no longer be reset at open which is in accordance with which how the other drivers work. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 9 additions and 47 deletions
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@ -220,7 +220,6 @@ struct moschip_port {
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char open_ports;
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wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
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int delta_msr_cond;
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struct async_icount icount;
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struct usb_serial_port *port; /* loop back to the owner of this object */
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/* Offsets */
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@ -399,11 +398,10 @@ static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr)
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struct moschip_port *mos7840_port;
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struct async_icount *icount;
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mos7840_port = port;
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icount = &mos7840_port->icount;
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if (new_msr &
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(MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI |
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MOS_MSR_DELTA_CD)) {
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icount = &mos7840_port->icount;
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icount = &mos7840_port->port->icount;
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/* update input line counters */
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if (new_msr & MOS_MSR_DELTA_CTS)
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@ -434,7 +432,7 @@ static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr)
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}
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/* update input line counters */
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icount = &port->icount;
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icount = &port->port->icount;
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if (new_lsr & SERIAL_LSR_BI)
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icount->brk++;
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if (new_lsr & SERIAL_LSR_OE)
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@ -761,8 +759,8 @@ static void mos7840_bulk_in_callback(struct urb *urb)
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struct tty_port *tport = &mos7840_port->port->port;
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tty_insert_flip_string(tport, data, urb->actual_length);
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tty_flip_buffer_push(tport);
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mos7840_port->icount.rx += urb->actual_length;
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dev_dbg(&port->dev, "mos7840_port->icount.rx is %d:\n", mos7840_port->icount.rx);
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port->icount.rx += urb->actual_length;
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dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx);
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}
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if (!mos7840_port->read_urb) {
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@ -1113,17 +1111,12 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port)
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/* initialize our wait queues */
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init_waitqueue_head(&mos7840_port->wait_chase);
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/* initialize our icount structure */
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memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount));
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/* initialize our port settings */
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/* Must set to enable ints! */
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mos7840_port->shadowMCR = MCR_MASTER_IE;
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/* send a open port command */
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mos7840_port->open = 1;
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/* mos7840_change_port_settings(mos7840_port,old_termios); */
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mos7840_port->icount.tx = 0;
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mos7840_port->icount.rx = 0;
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return 0;
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}
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@ -1489,8 +1482,8 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port,
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goto exit;
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}
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bytes_sent = transfer_size;
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mos7840_port->icount.tx += transfer_size;
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dev_dbg(&port->dev, "mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx);
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port->icount.tx += transfer_size;
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dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx);
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exit:
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return bytes_sent;
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@ -2109,37 +2102,6 @@ static int mos7840_get_serial_info(struct moschip_port *mos7840_port,
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return 0;
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}
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static int mos7840_get_icount(struct tty_struct *tty,
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struct serial_icounter_struct *icount)
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{
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struct usb_serial_port *port = tty->driver_data;
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struct moschip_port *mos7840_port;
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struct async_icount cnow;
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unsigned long flags;
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mos7840_port = mos7840_get_port_private(port);
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spin_lock_irqsave(&port->lock, flags);
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cnow = mos7840_port->icount;
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spin_unlock_irqrestore(&port->lock, flags);
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icount->cts = cnow.cts;
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icount->dsr = cnow.dsr;
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icount->rng = cnow.rng;
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icount->dcd = cnow.dcd;
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icount->rx = cnow.rx;
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icount->tx = cnow.tx;
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icount->frame = cnow.frame;
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icount->overrun = cnow.overrun;
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icount->parity = cnow.parity;
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icount->brk = cnow.brk;
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icount->buf_overrun = cnow.buf_overrun;
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dev_dbg(&port->dev, "%s TIOCGICOUNT RX=%d, TX=%d\n", __func__,
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icount->rx, icount->tx);
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return 0;
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}
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/*****************************************************************************
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* SerialIoctl
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* this function handles any ioctl calls to the driver
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@ -2183,7 +2145,7 @@ static int mos7840_ioctl(struct tty_struct *tty,
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case TIOCMIWAIT:
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dev_dbg(&port->dev, "%s TIOCMIWAIT\n", __func__);
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spin_lock_irqsave(&port->lock, flags);
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cprev = mos7840_port->icount;
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cprev = port->icount;
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spin_unlock_irqrestore(&port->lock, flags);
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while (1) {
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/* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */
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@ -2201,7 +2163,7 @@ static int mos7840_ioctl(struct tty_struct *tty,
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return -EIO;
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spin_lock_irqsave(&port->lock, flags);
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cnow = mos7840_port->icount;
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cnow = port->icount;
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spin_unlock_irqrestore(&port->lock, flags);
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if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
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@ -2565,7 +2527,7 @@ static struct usb_serial_driver moschip7840_4port_device = {
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.break_ctl = mos7840_break,
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.tiocmget = mos7840_tiocmget,
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.tiocmset = mos7840_tiocmset,
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.get_icount = mos7840_get_icount,
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.get_icount = usb_serial_generic_get_icount,
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.port_probe = mos7840_port_probe,
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.port_remove = mos7840_port_remove,
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.read_bulk_callback = mos7840_bulk_in_callback,
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