diff options
| -rw-r--r-- | drivers/usb/serial/usb_wwan.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index 84fe1b6ba11b..fe5e48eb9693 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -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; + } } } |