static int set_ether_config(struct eth_dev *dev, gfp_t gfp_flags)
{
int result = 0;
if (dev->status_ep)
usb_ept_enable(dev->status_ep, 1);
result = alloc_requests(dev, qlen , gfp_flags);
if (result == 0)
DEBUG(dev, "qlen %d\n", qlen);
return result;
}
static int set_fastboot_config(struct fastboot_dev *dev, gfp_t gfp_flags)
{
int result = 0;
struct usb_gadget *gadget = dev->gadget;
dev->in = ep_choose(gadget, &hs_source_desc, &fs_source_desc);
dev->in_ep->driver_data = dev;
dev->out = ep_choose(gadget, &hs_sink_desc, &fs_sink_desc);
dev->out_ep->driver_data = dev;
result = usb_ep_enable(dev->in_ep, dev->in);
if (result != 0) {
debug("enable %s --> %d\n", dev->in_ep->name, result);
goto done;
}
result = usb_ep_enable(dev->out_ep, dev->out);
if (result != 0) {
debug("enable %s --> %d\n", dev->out_ep->name, result);
goto done;
}
done:
if (result == 0)
result = alloc_requests(dev, 1, gfp_flags);
/* on error, disable any endpoints */
if (result < 0) {
(void)usb_ep_disable(dev->in_ep);
(void)usb_ep_disable(dev->out_ep);
dev->in = NULL;
dev->out = NULL;
}
/* caller is responsible for cleanup on error */
return result;
}
/**
* gether_connect - notify network layer that USB link is active
* @link: the USB link, set up with endpoints, descriptors matching
* current device speed, and any framing wrapper(s) set up.
* Context: irqs blocked
*
* This is called to activate endpoints and let the network layer know
* the connection is active ("carrier detect"). It may cause the I/O
* queues to open and start letting network packets flow, but will in
* any case activate the endpoints so that they respond properly to the
* USB host.
*
* Verify net_device pointer returned using IS_ERR(). If it doesn't
* indicate some error code (negative errno), ep->driver_data values
* have been overwritten.
*/
struct net_device *gether_connect(struct gether *link)
{
struct eth_dev *dev = the_dev;
int result = 0;
if (!dev)
return ERR_PTR(-EINVAL);
link->in_ep->driver_data = dev;
result = usb_ep_enable(link->in_ep, link->in);
if (result != 0) {
DBG(dev, "enable %s --> %d\n",
link->in_ep->name, result);
goto fail0;
}
link->out_ep->driver_data = dev;
result = usb_ep_enable(link->out_ep, link->out);
if (result != 0) {
DBG(dev, "enable %s --> %d\n",
link->out_ep->name, result);
goto fail1;
}
if (result == 0)
result = alloc_requests(dev, link, qlen(dev->gadget));
if (result == 0) {
dev->zlp = link->is_zlp_ok;
DBG(dev, "qlen %d\n", qlen(dev->gadget));
dev->header_len = link->header_len;
dev->unwrap = link->unwrap;
dev->wrap = link->wrap;
spin_lock(&dev->lock);
dev->port_usb = link;
link->ioport = dev;
if (netif_running(dev->net)) {
if (link->open)
link->open(link);
} else {
if (link->close)
link->close(link);
}
spin_unlock(&dev->lock);
netif_carrier_on(dev->net);
if (netif_running(dev->net))
eth_start(dev, GFP_ATOMIC);
/* on error, disable any endpoints */
} else {
(void) usb_ep_disable(link->out_ep);
fail1:
(void) usb_ep_disable(link->in_ep);
}
fail0:
/* caller is responsible for cleanup on error */
if (result < 0)
return ERR_PTR(result);
return dev->net;
}