Re: [rfc]btusb with SCO support

Oliver Neukum
2008-08-18T14:38:51Z

Am Montag 18 August 2008 16:36:22 schrieb Marcel Holtmann:
> Hi Oliver,
>
> > > > > On the other hand, this is audio and I don't really care if we loose a
> > > > > packet or not.
> > > >
> > > > It isn't limited to sound. The URBs for acl reception can also be delayed
> > > > arbitrarily long.
> > >
> > > We can move that into the notify() callback, but the killing the URBs
> > > becomes a problem.
> >
> > /**
> > * usb_unlink_anchored_urbs - asynchronously cancel transfer requests en masse
> > * @anchor: anchor the requests are bound to
> > *
> > * this allows all outstanding URBs to be unlinked starting
> > * from the back of the queue. This function is asynchronous.
> > * The unlinking is just tiggered. It may happen after this
> > * function has returned.
> > */
> > void usb_unlink_anchored_urbs(struct usb_anchor *anchor)
>
> then we can move the ACL handling into the notify() callback.
>
> For the SCO ones, I don't see any chance since we have to do the
> altsetting first.

You are right.

Regards
Oliver