On Tue, 22 Nov 2011, Sebastian Andrzej Siewior wrote:
> On 11/22/2011 05:14 PM, Alan Stern wrote:
> > In addition to what Sebastian pointed out, the API is missing a piece.
> > A gadget driver needs to know whether or not the UDC driver supports SG
> > operations and how large an SG list may become. There should be a
> > "sg_max_tablesize" field (or some name like that) added to struct
> > usb_gadget; if the field is 0 then SG operations aren't supported.
> >
>
> He added that and named it sg_tablesize:
>
> @@ -519,6 +588,7 @@ struct usb_gadget {
> struct list_head ep_list; /* of usb_ep */
> enum usb_device_speed speed;
> enum usb_device_speed max_speed;
> + unsigned sg_tablesize;
Ah, yes. I didn't see it originally but you're right. Good, Felipe
was way ahead of me all along. :-)
Alan Stern
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
