On Thu, 22 Jul 2004, [ks_c_5601-1987] ¹عب£»َ wrote:
> In file_storage.c from /driver/usb/gadget, there are two parts handling
> Standard Request and Class-Specific Request. However, in my opinion, there
> is one part handling Requests in net2280.c, that is...
> tmp = dev->driver->setup (&dev->gadget, &u.r);
> If so, how file_storage.c distinguishes two Requests?
> "distinguish" means that one case, it calls 'class_setup_req' function and
> another case, it calls 'standard_setup_req'.
Use the source. In fsg_setup() you'll see:
if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS)
rc = class_setup_req(fsg, ctrl);
else
rc = standard_setup_req(fsg, ctrl);
That's how it distinguishes standard requests and class-specific requests.
Alan Stern
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