diff options
| author | Johan Hovold <jhovold@gmail.com> | 2013-03-21 15:37:08 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-26 00:50:53 +0400 |
| commit | 8b8070d8580c38e15979b2a88f3a4d7b02bd3bde (patch) | |
| tree | 2b8e5dc09219351fa82ba4c5a75852b7e2f7fa58 /drivers/usb/serial/io_edgeport.c | |
| parent | d36a7712497b547a21bf46c3be517cb06ccb93ee (diff) | |
| download | linux-8b8070d8580c38e15979b2a88f3a4d7b02bd3bde.tar.xz | |
USB: io_edgeport: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation.
This also fixes the issue with processes waiting for
modem-status-changes not being woken up at disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/io_edgeport.c')
| -rw-r--r-- | drivers/usb/serial/io_edgeport.c | 35 |
1 files changed, 1 insertions, 34 deletions
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index 16ef8f3714d9..ff9a6ef8477f 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -1618,8 +1618,6 @@ static int edge_ioctl(struct tty_struct *tty, struct usb_serial_port *port = tty->driver_data; DEFINE_WAIT(wait); struct edgeport_port *edge_port = usb_get_serial_port_data(port); - struct async_icount cnow; - struct async_icount cprev; dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); @@ -1631,37 +1629,6 @@ static int edge_ioctl(struct tty_struct *tty, case TIOCGSERIAL: dev_dbg(&port->dev, "%s (%d) TIOCGSERIAL\n", __func__, port->number); return get_serial_info(edge_port, (struct serial_struct __user *) arg); - - case TIOCMIWAIT: - dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number); - cprev = port->icount; - while (1) { - prepare_to_wait(&port->delta_msr_wait, - &wait, TASK_INTERRUPTIBLE); - schedule(); - finish_wait(&port->delta_msr_wait, &wait); - /* see if a signal did it */ - if (signal_pending(current)) - return -ERESTARTSYS; - - if (port->serial->disconnected) - return -EIO; - - cnow = port->icount; - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) - return -EIO; /* no change => error */ - if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || - ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || - ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || - ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { - return 0; - } - cprev = cnow; - } - /* NOTREACHED */ - break; - } return -ENOIOCTLCMD; } @@ -2022,7 +1989,7 @@ static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) icount->dcd++; if (newMsr & EDGEPORT_MSR_DELTA_RI) icount->rng++; - wake_up_interruptible(&edge_port->port->delta_msr_wait); + wake_up_interruptible(&edge_port->port->port.delta_msr_wait); } /* Save the new modem status */ |