static void play_delayed(struct usb_serial_port *port)
{
struct hsictty_intf_private *data;
struct hsictty_port_private *portdata;
struct urb *urb;
int err;
portdata = usb_get_serial_port_data(port);
data = usb_get_serial_data(port->serial);
while ((urb = usb_get_from_anchor(&portdata->delayed_urb))) {
err = usb_submit_urb(urb, GFP_ATOMIC);
if (!err) {
hsictty_dbg
("%s re-submit URB %p, write data may lost\n",
__func__, urb);
data->in_flight++;
} else {
/* we have to throw away the rest */
hsictty_error
("%s re-submit flight URB error, write data may lost\n",
__func__);
do {
unbusy_queued_urb(urb, portdata);
usb_autopm_put_interface_no_suspend
(port->serial->interface);
} while ((urb =
usb_get_from_anchor(&portdata->delayed_urb)));
break;
}
}
}
static irqreturn_t bb_wake_irq(int irq, void *dev_id)
{
struct opsdata data;
struct usb_interface *iface;
int cwrlevel = bb_get_cwr();
bool pwrstate_l2 = false;
bb_getdata(&data);
pwrstate_l2 = ((data.powerstate == BBSTATE_L02L2) ||
(data.powerstate == BBSTATE_L2));
if (cwrlevel && pwrstate_l2) {
if (dlevel & DLEVEL_PM)
pr_info("%s: Modem wakeup request from L2.\n",
__func__);
if (data.usbdev) {
usb_lock_device(data.usbdev);
iface = usb_ifnum_to_if(data.usbdev, 0);
if (iface) {
/* Resume usb host activity. */
usb_autopm_get_interface(iface);
usb_autopm_put_interface_no_suspend(iface);
}
usb_unlock_device(data.usbdev);
}
}
if (!cwrlevel && data.powerstate == BBSTATE_UNKNOWN && data.usbdev) {
data.powerstate = BBSTATE_L0;
bb_setdata(&data);
if (dlevel & DLEVEL_PM)
pr_info("%s: Network interface up.\n", __func__);
}
return IRQ_HANDLED;
}
static void quiesce_and_remove_host(struct us_data *us)
{
struct Scsi_Host *host = us_to_host(us);
//---------------------------
pr_info("17 quiesce and remove host\n");
/* If the device is really gone, cut short reset delays */
if (us->pusb_dev->state == USB_STATE_NOTATTACHED) {
set_bit(US_FLIDX_DISCONNECTING, &us->dflags);
wake_up(&us->delay_wait);
}
/* Prevent SCSI scanning (if it hasn't started yet)
* or wait for the SCSI-scanning routine to stop.
*/
cancel_delayed_work_sync(&us->scan_dwork);
/* Balance autopm calls if scanning was cancelled */
if (test_bit(US_FLIDX_SCAN_PENDING, &us->dflags))
usb_autopm_put_interface_no_suspend(us->pusb_intf);
/* Removing the host will perform an orderly shutdown: caches
* synchronized, disks spun down, etc.
*/
scsi_remove_host(host);
/* Prevent any new commands from being accepted and cut short
* reset delays.
*/
scsi_lock(host);
set_bit(US_FLIDX_DISCONNECTING, &us->dflags);
scsi_unlock(host);
wake_up(&us->delay_wait);
}
