提交 16871dca 编写于 作者: O Oliver Neukum 提交者: Greg Kroah-Hartman

usb_wwan: error case of resume

If an error happens during resumption.
The remaining data has to be cleanly discarded and the pm
counters have to be adjusted.
Signed-off-by: NOliver Neukum <oneukum@suse.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 433508ae
......@@ -664,6 +664,18 @@ int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message)
}
EXPORT_SYMBOL(usb_wwan_suspend);
static void unbusy_queued_urb(struct urb *urb, struct usb_wwan_port_private *portdata)
{
int i;
for (i = 0; i < N_OUT_URB; i++) {
if (urb == portdata->out_urbs[i]) {
clear_bit(i, &portdata->out_busy);
break;
}
}
}
static void play_delayed(struct usb_serial_port *port)
{
struct usb_wwan_intf_private *data;
......@@ -675,8 +687,17 @@ static void play_delayed(struct usb_serial_port *port)
data = port->serial->private;
while ((urb = usb_get_from_anchor(&portdata->delayed))) {
err = usb_submit_urb(urb, GFP_ATOMIC);
if (!err)
if (!err) {
data->in_flight++;
} else {
/* we have to throw away the rest */
do {
unbusy_queued_urb(urb, portdata);
//extremely dirty
atomic_dec(&port->serial->interface->dev.power.usage_count);
} while ((urb = usb_get_from_anchor(&portdata->delayed)));
break;
}
}
}
......
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