static void ar9170_usb_cancel_urbs(struct ar9170_usb *aru)
{
int err;
aru->common.state = AR9170_UNKNOWN_STATE;
err = ar9170_usb_flush(&aru->common);
if (err)
dev_err(&aru->udev->dev, "stuck tx urbs!\n");
usb_poison_anchored_urbs(&aru->tx_submitted);
usb_poison_anchored_urbs(&aru->rx_submitted);
}
void carl9170_usb_stop(struct ar9170 *ar)
{
int ret;
carl9170_set_state_when(ar, CARL9170_IDLE, CARL9170_STOPPED);
ret = carl9170_usb_flush(ar);
if (ret)
dev_err(&ar->udev->dev, "kill pending tx urbs.\n");
usb_poison_anchored_urbs(&ar->tx_anch);
carl9170_usb_handle_tx_err(ar);
/* kill any pending command */
spin_lock_bh(&ar->cmd_lock);
ar->readlen = 0;
spin_unlock_bh(&ar->cmd_lock);
complete_all(&ar->cmd_wait);
/* This is required to prevent an early completion on _start */
INIT_COMPLETION(ar->cmd_wait);
/*
* Note:
* So far we freed all tx urbs, but we won't dare to touch any rx urbs.
* Else we would end up with a unresponsive device...
*/
}
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 void r92su_usb_disconnect(struct usb_interface *intf)
{
struct r92su *r92su = usb_get_intfdata(intf);
struct urb *urb;
r92su_unregister(r92su);
/* give the disconnect command some time to finish... */
usb_wait_anchor_empty_timeout(&r92su->tx_submitted,
USB_CTRL_SET_TIMEOUT);
/* ... before everything is forcefully terminated */
usb_poison_anchored_urbs(&r92su->tx_submitted);
usb_poison_anchored_urbs(&r92su->rx_submitted);
while ((urb = usb_get_from_anchor(&r92su->tx_wait))) {
kfree_skb(urb->context);
usb_free_urb(urb);
}
r92su_free(r92su);
}
static int ar9170_usb_open(struct ar9170 *ar)
{
struct ar9170_usb *aru = (void *) ar;
int err;
usb_unpoison_anchored_urbs(&aru->tx_submitted);
err = ar9170_usb_init_transport(aru);
if (err) {
usb_poison_anchored_urbs(&aru->tx_submitted);
return err;
}
aru->common.state = AR9170_IDLE;
return 0;
}
static void ar9170_usb_stop(struct ar9170 *ar)
{
struct ar9170_usb *aru = (void *) ar;
int ret;
if (IS_ACCEPTING_CMD(ar))
aru->common.state = AR9170_STOPPED;
ret = ar9170_usb_flush(ar);
if (ret)
dev_err(&aru->udev->dev, "kill pending tx urbs.\n");
usb_poison_anchored_urbs(&aru->tx_submitted);
/*
* Note:
* So far we freed all tx urbs, but we won't dare to touch any rx urbs.
* Else we would end up with a unresponsive device...
*/
}
