static int tegra_ehci_urb_enqueue(
struct usb_hcd *hcd,
struct urb *urb,
gfp_t mem_flags
) {
struct tegra_hcd_platform_data *pdata;
int xfertype;
int transfer_buffer_length;
pdata = hcd->self.controller->platform_data;
xfertype = usb_endpoint_type(&urb->ep->desc);
transfer_buffer_length = urb->transfer_buffer_length;
/* Turn on the USB busy hints */
switch (xfertype) {
case USB_ENDPOINT_XFER_INT:
if (transfer_buffer_length < 255) {
/* Do nothing for interrupt buffers < 255 */
} else {
// signal to set the busy hints
schedule_work(&pdata->work);
}
break;
case USB_ENDPOINT_XFER_ISOC:
case USB_ENDPOINT_XFER_BULK:
// signal to set the busy hints
schedule_work(&pdata->work);
break;
case USB_ENDPOINT_XFER_CONTROL:
default:
/* Do nothing special here */
break;
}
return ehci_urb_enqueue(hcd, urb, mem_flags);
}
static int ehci_hsic_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
gfp_t mem_flags)
{
dbg_log_event(urb, event_to_str(URB_SUBMIT), 0);
return ehci_urb_enqueue(hcd, urb, mem_flags);
}