From: Johan Hovold Date: Thu, 21 Mar 2013 11:37:16 +0000 (+0100) Subject: USB: mos7840: switch to generic get_icount implementation X-Git-Tag: v3.12-rc1~998^2~150 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8c1a07ff7f28549881db0885074feb3e02b07ddb;p=kernel%2Fkernel-generic.git 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 7af3d42..92feae6 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -220,7 +220,6 @@ struct moschip_port { char open_ports; wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ int delta_msr_cond; - struct async_icount icount; struct usb_serial_port *port; /* loop back to the owner of this object */ /* Offsets */ @@ -399,11 +398,10 @@ static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) struct moschip_port *mos7840_port; struct async_icount *icount; mos7840_port = port; - icount = &mos7840_port->icount; if (new_msr & (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | MOS_MSR_DELTA_CD)) { - icount = &mos7840_port->icount; + icount = &mos7840_port->port->icount; /* update input line counters */ if (new_msr & MOS_MSR_DELTA_CTS) @@ -434,7 +432,7 @@ static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) } /* update input line counters */ - icount = &port->icount; + icount = &port->port->icount; if (new_lsr & SERIAL_LSR_BI) icount->brk++; if (new_lsr & SERIAL_LSR_OE) @@ -761,8 +759,8 @@ static void mos7840_bulk_in_callback(struct urb *urb) struct tty_port *tport = &mos7840_port->port->port; tty_insert_flip_string(tport, data, urb->actual_length); tty_flip_buffer_push(tport); - mos7840_port->icount.rx += urb->actual_length; - dev_dbg(&port->dev, "mos7840_port->icount.rx is %d:\n", mos7840_port->icount.rx); + port->icount.rx += urb->actual_length; + dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx); } if (!mos7840_port->read_urb) { @@ -1113,17 +1111,12 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) /* initialize our wait queues */ init_waitqueue_head(&mos7840_port->wait_chase); - /* initialize our icount structure */ - memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); - /* initialize our port settings */ /* Must set to enable ints! */ mos7840_port->shadowMCR = MCR_MASTER_IE; /* send a open port command */ mos7840_port->open = 1; /* mos7840_change_port_settings(mos7840_port,old_termios); */ - mos7840_port->icount.tx = 0; - mos7840_port->icount.rx = 0; return 0; } @@ -1489,8 +1482,8 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, goto exit; } bytes_sent = transfer_size; - mos7840_port->icount.tx += transfer_size; - dev_dbg(&port->dev, "mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx); + port->icount.tx += transfer_size; + dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx); exit: return bytes_sent; @@ -2109,37 +2102,6 @@ static int mos7840_get_serial_info(struct moschip_port *mos7840_port, return 0; } -static int mos7840_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount) -{ - struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port; - struct async_icount cnow; - unsigned long flags; - - mos7840_port = mos7840_get_port_private(port); - - spin_lock_irqsave(&port->lock, flags); - cnow = mos7840_port->icount; - spin_unlock_irqrestore(&port->lock, flags); - - 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; - - dev_dbg(&port->dev, "%s TIOCGICOUNT RX=%d, TX=%d\n", __func__, - icount->rx, icount->tx); - return 0; -} - /***************************************************************************** * SerialIoctl * this function handles any ioctl calls to the driver @@ -2183,7 +2145,7 @@ static int mos7840_ioctl(struct tty_struct *tty, case TIOCMIWAIT: dev_dbg(&port->dev, "%s TIOCMIWAIT\n", __func__); spin_lock_irqsave(&port->lock, flags); - cprev = mos7840_port->icount; + cprev = port->icount; spin_unlock_irqrestore(&port->lock, flags); while (1) { /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ @@ -2201,7 +2163,7 @@ static int mos7840_ioctl(struct tty_struct *tty, return -EIO; spin_lock_irqsave(&port->lock, flags); - cnow = mos7840_port->icount; + cnow = port->icount; spin_unlock_irqrestore(&port->lock, flags); if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && @@ -2565,7 +2527,7 @@ static struct usb_serial_driver moschip7840_4port_device = { .break_ctl = mos7840_break, .tiocmget = mos7840_tiocmget, .tiocmset = mos7840_tiocmset, - .get_icount = mos7840_get_icount, + .get_icount = usb_serial_generic_get_icount, .port_probe = mos7840_port_probe, .port_remove = mos7840_port_remove, .read_bulk_callback = mos7840_bulk_in_callback,