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USB: f81232: fix TIOCMIWAIT and disconnect

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Use tty-port modem-status-change wait queue on which processes are woken
up at hangup and disconnect.

Currently a process waiting on modem-status changes will not be woken on
device disconnect.

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 12:37:06 +01:00 committed by Greg Kroah-Hartman
parent 4bb4e6384a
commit 3018bb5158
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/serial/f81232.c
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@ -110,7 +110,7 @@ static void f81232_process_read_urb(struct urb *urb)
line_status = priv->line_status; line_status = priv->line_status;
priv->line_status &= ~UART_STATE_TRANSIENT_MASK; priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
spin_unlock_irqrestore(&priv->lock, flags); spin_unlock_irqrestore(&priv->lock, flags);
wake_up_interruptible(&port->delta_msr_wait); wake_up_interruptible(&port->port.delta_msr_wait);
if (!urb->actual_length) if (!urb->actual_length)
return; return;
@ -256,7 +256,7 @@ static int f81232_tiocmiwait(struct tty_struct *tty, unsigned long arg)
spin_unlock_irqrestore(&priv->lock, flags); spin_unlock_irqrestore(&priv->lock, flags);
while (1) { while (1) {
interruptible_sleep_on(&port->delta_msr_wait); interruptible_sleep_on(&port->port.delta_msr_wait);
/* see if a signal did it */ /* see if a signal did it */
if (signal_pending(current)) if (signal_pending(current))
return -ERESTARTSYS; return -ERESTARTSYS;