diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-01 21:01:10 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-01 21:01:10 +0200 |
| commit | ef99f3aee9641d10a7c80d4803d2f0f004c797ca (patch) | |
| tree | 83f14ccef66db48fc4178bd8b973462006de86b8 /drivers/usb/serial/quatech2.c | |
| parent | ARM: PL011: Add support for Rx DMA buffer polling. (diff) | |
| parent | Linux 3.9-rc5 (diff) | |
| download | linux-ef99f3aee9641d10a7c80d4803d2f0f004c797ca.tar.xz linux-ef99f3aee9641d10a7c80d4803d2f0f004c797ca.zip | |
Merge 3.9-rc5 into tty-next
We need the fixes here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/quatech2.c')
| -rw-r--r-- | drivers/usb/serial/quatech2.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index d8531047b41a..ef3a7d5eaab4 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -127,7 +127,6 @@ struct qt2_port_private { u8 shadowLSR; u8 shadowMSR; - wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ struct async_icount icount; struct usb_serial_port *port; @@ -502,8 +501,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) spin_unlock_irqrestore(&priv->lock, flags); while (1) { - wait_event_interruptible(priv->delta_msr_wait, - ((priv->icount.rng != prev.rng) || + wait_event_interruptible(port->delta_msr_wait, + (port->serial->disconnected || + (priv->icount.rng != prev.rng) || (priv->icount.dsr != prev.dsr) || (priv->icount.dcd != prev.dcd) || (priv->icount.cts != prev.cts))); @@ -511,6 +511,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) if (signal_pending(current)) return -ERESTARTSYS; + if (port->serial->disconnected) + return -EIO; + spin_lock_irqsave(&priv->lock, flags); cur = priv->icount; spin_unlock_irqrestore(&priv->lock, flags); @@ -820,7 +823,6 @@ static int qt2_port_probe(struct usb_serial_port *port) spin_lock_init(&port_priv->lock); spin_lock_init(&port_priv->urb_lock); - init_waitqueue_head(&port_priv->delta_msr_wait); port_priv->port = port; port_priv->write_urb = usb_alloc_urb(0, GFP_KERNEL); @@ -957,7 +959,7 @@ static void qt2_update_msr(struct usb_serial_port *port, unsigned char *ch) if (newMSR & UART_MSR_TERI) port_priv->icount.rng++; - wake_up_interruptible(&port_priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); } } |