static int rt2x00usb_find_endpoints(struct rt2x00_dev *rt2x00dev)
{
struct usb_interface *intf = to_usb_interface(rt2x00dev->dev);
struct usb_host_interface *intf_desc = intf->cur_altsetting;
struct usb_endpoint_descriptor *ep_desc;
struct data_queue *queue = rt2x00dev->tx;
struct usb_endpoint_descriptor *tx_ep_desc = NULL;
unsigned int i;
/*
* Walk through all available endpoints to search for "bulk in"
* and "bulk out" endpoints. When we find such endpoints collect
* the information we need from the descriptor and assign it
* to the queue.
*/
for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) {
ep_desc = &intf_desc->endpoint[i].desc;
if (usb_endpoint_is_bulk_in(ep_desc)) {
rt2x00usb_assign_endpoint(rt2x00dev->rx, ep_desc);
} else if (usb_endpoint_is_bulk_out(ep_desc) &&
(queue != queue_end(rt2x00dev))) {
rt2x00usb_assign_endpoint(queue, ep_desc);
queue = queue_next(queue);
tx_ep_desc = ep_desc;
}
}
/*
* At least 1 endpoint for RX and 1 endpoint for TX must be available.
*/
if (!rt2x00dev->rx->usb_endpoint || !rt2x00dev->tx->usb_endpoint) {
rt2x00_err(rt2x00dev, "Bulk-in/Bulk-out endpoints not found\n");
return -EPIPE;
}
/*
* It might be possible not all queues have a dedicated endpoint.
* Loop through all TX queues and copy the endpoint information
* which we have gathered from already assigned endpoints.
*/
txall_queue_for_each(rt2x00dev, queue) {
if (!queue->usb_endpoint)
rt2x00usb_assign_endpoint(queue, tx_ep_desc);
}
return 0;
}
static int rt2x00usb_find_endpoints(struct rt2x00_dev *rt2x00dev)
{
struct usb_interface *intf = to_usb_interface(rt2x00dev->dev);
struct usb_host_interface *intf_desc = intf->cur_altsetting;
struct usb_endpoint_descriptor *ep_desc;
struct data_queue *queue = rt2x00dev->tx;
struct usb_endpoint_descriptor *tx_ep_desc = NULL;
unsigned int i;
for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) {
ep_desc = &intf_desc->endpoint[i].desc;
if (usb_endpoint_is_bulk_in(ep_desc)) {
rt2x00usb_assign_endpoint(rt2x00dev->rx, ep_desc);
} else if (usb_endpoint_is_bulk_out(ep_desc) &&
(queue != queue_end(rt2x00dev))) {
rt2x00usb_assign_endpoint(queue, ep_desc);
queue = queue_next(queue);
tx_ep_desc = ep_desc;
}
}
if (!rt2x00dev->rx->usb_endpoint || !rt2x00dev->tx->usb_endpoint) {
ERROR(rt2x00dev, "Bulk-in/Bulk-out endpoints not found\n");
return -EPIPE;
}
txall_queue_for_each(rt2x00dev, queue) {
if (!queue->usb_endpoint)
rt2x00usb_assign_endpoint(queue, tx_ep_desc);
}
return 0;
}