2005/9/7, David Brownell <[EMAIL PROTECTED]>:
> > BTW, in "balance" function, why does index "i" start to 0 and not to
> > current frame number ?
>
> Why not? All that it guarantees is periodicity. Linux-USB hasn't
> yet made any guarantees about the analogue of clock phase; once a
> periodic tr
2005/9/7, David Brownell <[EMAIL PROTECTED]>:
> > Just to be sure, you mean if "URB1" is done at frameX then "URB2" must
> > be done at frameX + URB2->intervall ? Can you point out the section of
> > USB spec that explains this, please ?
>
> Forget about URB2->interval; it's an error in the device
> Just to be sure, you mean if "URB1" is done at frameX then "URB2" must
> be done at frameX + URB2->intervall ? Can you point out the section of
> USB spec that explains this, please ?
Forget about URB2->interval; it's an error in the device driver if
that's not the same as URB1->interval (or URB
2005/9/7, David Brownell <[EMAIL PROTECTED]>:
> > When you say NAK is not an error case, this is true except for setup
> > stage. Functions cannot issue a NAK packet in response to a setup
> > packet. In that case, it is an _error_, is it correct ?
>
> If they can't issue it, why are you worried a
> > Again, _transfers_ don't reserve bandwidth, endpoints do.
>
> I think I misunderstood this point
If you looked much at 2.4 code, that may be why. :)
> When you say NAK is not an error case, this is true except for setup
> stage. Functions cannot issue a NAK packet in response to a set
2005/9/6, David Brownell <[EMAIL PROTECTED]>:
> Again, _transfers_ don't reserve bandwidth, endpoints do.
>
I think I misunderstood this point
> And when the endpoint's transfer queue is empty, it surrenders
> its bandwidth reservation.
>
Dave, I just want to be sure to well understand thi
> > > The first question is not specific to sl811 hcd: for periodic
> > > transfer, does a urb must be resubmitted by the function driver after
> > > its transfer completion is called or is it handled by the hcd/core ?
> >
> > There is no "automagic resubmit" in 2.6 kernels; drivers reissue URBs
>
2005/9/6, David Brownell <[EMAIL PROTECTED]>:
>
> > The first question is not specific to sl811 hcd: for periodic
> > transfer, does a urb must be resubmitted by the function driver after
> > its transfer completion is called or is it handled by the hcd/core ?
>
> There is no "automagic resubmit"
> The first question is not specific to sl811 hcd: for periodic
> transfer, does a urb must be resubmitted by the function driver after
> its transfer completion is called or is it handled by the hcd/core ?
There is no "automagic resubmit" in 2.6 kernels; drivers reissue URBs
themselves, if that'
