[RFC/RFT] b43: A fix for DMA transmission sequence errors
Chris Vine
chris at cvine.freeserve.co.uk
Wed Mar 20 09:43:02 EDT 2013
On Wed, 20 Mar 2013 12:26:23 +0100
ISE Development <isedev at gmail.com> wrote:
> On Friday 15 Mar 2013 11:48:42 Larry Finger wrote:
> > On 03/15/2013 01:37 AM, Rafał Miłecki wrote:
> > > OK, so after early tests, this card doesn't support
> > > full-addressing at all.
> > >
> > > I'll give this patch a try during the weekend.
> >
> > Please follow Michael's suggestion, and change
> >
> > if (slot == firstused + 2) {
> >
> > into
> >
> > if (slot == next_slot(ring, next_slot(ring,
> > firstused))) {
> >
> > This change is needed just in case "firstused + 2" wraps around.
> >
> > Thanks,
> >
> > Larry
>
> Did you get a chance to validate this patch?
>
> So far on my system, it has been running for over week without
> problems (over 15GB of traffic).
If it helps as a data point, I have run the patch with the wrap-over
change suggested by Michael Busch and with the unlikely->likely
branching correction and it has been working fine for the last 5 days
on the 3.8.2 kernel, with approx 5GB of traffic. Before that, I put
about 10GB through the previous version of the patch as originally sent
by isedev.
Chris
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