RE: [PATCH] iw_cxgb4: set correct FetchBurstMax for QPs

["Steve Wise" <swise@opengridcomputing.com>]

> > commit b414fa01c31318383ae29d9d23cb9ca4184bbd86
> > Author: Steve Wise <swise@opengridcomputing.com>
> > Date:   Thu Dec 15 08:09:35 2016 -0800
> >
> >     iw_cxgb4: set correct FetchBurstMax for QPs
> >
> >     The current QP FetchBurstMax value is 256B, which
> >     is incorrect since a WR can exceed that value.  The
> >     result being a partial WR fetched by hardware, and
> >     a fatal "bad WR" error posted by the SGE.
> >
> >     So bump the FetchBurstMax to 512B.
> >
> >     Signed-off-by: Steve Wise <swise@opengridcomputing.com>
> >     Signed-off-by: Doug Ledford <dledford@redhat.com>
> >
> > I'm not sure if this is the correct way to request this, but I think I'm
> > following _option_2 from Documentation/stable_kernel_rules.txt.
> 
> Now queued up.  Are you sure this isn't also needed in the 4.4-stable
> tree?
>

Hey Greg,  At first, I didn't think it is needed because, while the bug is
indeed present in that code, it is only exposed (and causes problems) with
the new T6 hardware.   But now I think I'd like the fix pulled in 4.4-stable
to avoid any issues if T6 support is pulled into that base.

Thanks!

Steve