void ctrl_bridge_close(unsigned int id)
{
struct ctrl_bridge *dev;
if (id >= MAX_BRIDGE_DEVICES)
return;
dev = __dev[id];
if (!dev || !dev->brdg)
return;
dev_dbg(&dev->intf->dev, "%s:\n", __func__);
ctrl_bridge_set_cbits(dev->brdg->ch_id, 0);
dev_err(&dev->intf->dev, "%s: usb_wait_anchor_empty_timeout tx_submitted\n", __func__);
usb_wait_anchor_empty_timeout(&dev->tx_submitted, 500);
dev_err(&dev->intf->dev, "%s: tx_submitted usb_anchor_empty:%d\n", __func__, usb_anchor_empty(&dev->tx_submitted));
usb_unlink_anchored_urbs(&dev->tx_submitted);
dev->brdg = NULL;
}
int ctrl_bridge_suspend(unsigned int id)
{
struct ctrl_bridge *dev;
unsigned long flags;
if (id >= MAX_BRIDGE_DEVICES)
return -EINVAL;
dev = __dev[id];
if (!dev)
return -ENODEV;
if (!dev->int_pipe)
return 0;
spin_lock_irqsave(&dev->lock, flags);
if (!usb_anchor_empty(&dev->tx_submitted) || dev->rx_state == RX_BUSY) {
spin_unlock_irqrestore(&dev->lock, flags);
return -EBUSY;
}
spin_unlock_irqrestore(&dev->lock, flags);
usb_kill_urb(dev->inturb);
spin_lock_irqsave(&dev->lock, flags);
if (dev->rx_state != RX_IDLE) {
spin_unlock_irqrestore(&dev->lock, flags);
return -EBUSY;
}
if (!usb_anchor_empty(&dev->tx_submitted)) {
spin_unlock_irqrestore(&dev->lock, flags);
ctrl_bridge_start_read(dev, GFP_KERNEL);
return -EBUSY;
}
set_bit(SUSPENDED, &dev->flags);
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
static void usb_net_raw_ip_tx_urb_work(struct work_struct *work)
{
struct baseband_usb *usb
= container_of(work, struct baseband_usb, usb.tx_work);
struct urb *urb;
int err;
pr_debug("usb_net_raw_ip_tx_urb_work {\n");
/* check if tx urb(s) queued */
if (!usb->usb.tx_urb && usb_anchor_empty(&usb->usb.tx_urb_deferred)) {
pr_debug("%s: nothing to do!\n", __func__);
return;
}
/* check if usb interface disconnected */
if (!usb->usb.interface) {
pr_err("%s: not submitting tx urb %p -interface disconnected\n",
__func__, urb);
return;
}
/* submit queued tx urb(s) */
while ((urb = usb_get_from_anchor(&usb->usb.tx_urb_deferred))
!= (struct urb *) 0) {
/* decrement count from usb_get_from_anchor() */
usb_free_urb(urb);
/* autoresume before tx */
usb_mark_last_busy(usb->usb.device);
err = usb_autopm_get_interface(usb->usb.interface);
if (err < 0) {
pr_err("%s: usb_autopm_get_interface(%p) failed %d\n",
__func__, usb->usb.interface, err);
if (urb->transfer_buffer) {
kfree(urb->transfer_buffer);
urb->transfer_buffer = (void *) 0;
}
usb_free_urb(urb);
usb->stats.tx_errors++;
continue;
}
/* submit tx urb */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err < 0) {
pr_err("%s: usb_submit_urb(%p) failed - err %d\n",
__func__, urb, err);
usb_autopm_put_interface(usb->usb.interface);
if (urb->transfer_buffer) {
kfree(urb->transfer_buffer);
urb->transfer_buffer = (void *) 0;
}
usb_free_urb(urb);
continue;
}
/* free tx urb
* - actual urb free occurs when refcnt which was incremented
* in usb_submit_urb is decremented to 0 (usually after urb
* completion function returns)
* - tx urb transfer buffer will be freed in urb completion
* function
*/
usb_free_urb(urb);
}
pr_debug("usb_net_raw_ip_tx_urb_work }\n");
}