static int carl9170_usb_resume(struct usb_interface *intf)
{
struct ar9170 *ar = usb_get_intfdata(intf);
int err;
if (!ar)
return -ENODEV;
usb_unpoison_anchored_urbs(&ar->rx_anch);
carl9170_set_state(ar, CARL9170_STOPPED);
/*
* The USB documentation demands that [for suspend] all traffic
* to and from the device has to stop. This would be fine, but
* there's a catch: the device[usb phy] does not come back.
*
* Upon resume the firmware will "kill" itself and the
* boot-code sorts out the magic voodoo.
* Not very nice, but there's not much what could go wrong.
*/
msleep(1100);
err = carl9170_usb_init_device(ar);
if (err)
goto err_unrx;
return 0;
err_unrx:
carl9170_usb_cancel_urbs(ar);
return err;
}
static int carl9170_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct ar9170 *ar;
struct usb_device *udev;
int err;
err = usb_reset_device(interface_to_usbdev(intf));
if (err)
return err;
ar = carl9170_alloc(sizeof(*ar));
if (IS_ERR(ar))
return PTR_ERR(ar);
udev = interface_to_usbdev(intf);
usb_get_dev(udev);
ar->udev = udev;
ar->intf = intf;
ar->features = id->driver_info;
usb_set_intfdata(intf, ar);
SET_IEEE80211_DEV(ar->hw, &intf->dev);
init_usb_anchor(&ar->rx_anch);
init_usb_anchor(&ar->rx_pool);
init_usb_anchor(&ar->rx_work);
init_usb_anchor(&ar->tx_wait);
init_usb_anchor(&ar->tx_anch);
init_usb_anchor(&ar->tx_cmd);
init_usb_anchor(&ar->tx_err);
init_completion(&ar->cmd_wait);
init_completion(&ar->fw_boot_wait);
init_completion(&ar->fw_load_wait);
tasklet_init(&ar->usb_tasklet, carl9170_usb_tasklet,
(unsigned long)ar);
atomic_set(&ar->tx_cmd_urbs, 0);
atomic_set(&ar->tx_anch_urbs, 0);
atomic_set(&ar->rx_work_urbs, 0);
atomic_set(&ar->rx_anch_urbs, 0);
atomic_set(&ar->rx_pool_urbs, 0);
usb_get_dev(ar->udev);
carl9170_set_state(ar, CARL9170_STOPPED);
err = request_firmware_nowait(THIS_MODULE, 1, CARL9170FW_NAME,
&ar->udev->dev, GFP_KERNEL, ar, carl9170_usb_firmware_step2);
if (err) {
usb_put_dev(udev);
usb_put_dev(udev);
carl9170_free(ar);
}
return err;
}
static void carl9170_usb_cancel_urbs(struct ar9170 *ar)
{
int err;
carl9170_set_state(ar, CARL9170_UNKNOWN_STATE);
err = carl9170_usb_flush(ar);
if (err)
dev_err(&ar->udev->dev, "stuck tx urbs!\n");
usb_poison_anchored_urbs(&ar->tx_anch);
carl9170_usb_handle_tx_err(ar);
usb_poison_anchored_urbs(&ar->rx_anch);
tasklet_kill(&ar->usb_tasklet);
usb_scuttle_anchored_urbs(&ar->rx_work);
usb_scuttle_anchored_urbs(&ar->rx_pool);
usb_scuttle_anchored_urbs(&ar->tx_cmd);
}
static int carl9170_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_endpoint_descriptor *ep;
struct ar9170 *ar;
struct usb_device *udev;
int i, err;
err = usb_reset_device(interface_to_usbdev(intf));
if (err)
return err;
ar = carl9170_alloc(sizeof(*ar));
if (IS_ERR(ar))
return PTR_ERR(ar);
udev = interface_to_usbdev(intf);
usb_get_dev(udev);
ar->udev = udev;
ar->intf = intf;
ar->features = id->driver_info;
/* We need to remember the type of endpoint 4 because it differs
* between high- and full-speed configuration. The high-speed
* configuration specifies it as interrupt and the full-speed
* configuration as bulk endpoint. This information is required
* later when sending urbs to that endpoint.
*/
for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; ++i) {
ep = &intf->cur_altsetting->endpoint[i].desc;
if (usb_endpoint_num(ep) == AR9170_USB_EP_CMD &&
usb_endpoint_dir_out(ep) &&
usb_endpoint_type(ep) == USB_ENDPOINT_XFER_BULK)
ar->usb_ep_cmd_is_bulk = true;
}
usb_set_intfdata(intf, ar);
SET_IEEE80211_DEV(ar->hw, &intf->dev);
init_usb_anchor(&ar->rx_anch);
init_usb_anchor(&ar->rx_pool);
init_usb_anchor(&ar->rx_work);
init_usb_anchor(&ar->tx_wait);
init_usb_anchor(&ar->tx_anch);
init_usb_anchor(&ar->tx_cmd);
init_usb_anchor(&ar->tx_err);
init_completion(&ar->cmd_wait);
init_completion(&ar->fw_boot_wait);
init_completion(&ar->fw_load_wait);
tasklet_init(&ar->usb_tasklet, carl9170_usb_tasklet,
(unsigned long)ar);
atomic_set(&ar->tx_cmd_urbs, 0);
atomic_set(&ar->tx_anch_urbs, 0);
atomic_set(&ar->rx_work_urbs, 0);
atomic_set(&ar->rx_anch_urbs, 0);
atomic_set(&ar->rx_pool_urbs, 0);
usb_get_dev(ar->udev);
carl9170_set_state(ar, CARL9170_STOPPED);
return request_firmware_nowait(THIS_MODULE, 1, CARL9170FW_NAME,
&ar->udev->dev, GFP_KERNEL, ar, carl9170_usb_firmware_step2);
}