Re: [PATCH net 5/5] net: ipa: avoid going past end of resource group array

[Alex Elder]

On 10/27/20 7:14 PM, Willem de Bruijn wrote:
> On Tue, Oct 27, 2020 at 12:38 PM Alex Elder <elder@xxxxxxxxxx> wrote:
> > The minimum and maximum limits for resources assigned to a given
> > resource group are programmed in pairs, with the limits for two
> > groups set in a single register.
> >
> > If the number of supported resource groups is odd, only half of the
> > register that defines these limits is valid for the last group; that
> > group has no second group in the pair.
> >
> > Currently we ignore this constraint, and it turns out to be harmless,
>
> If nothing currently calls it with an odd number of registers, is this
> a bugfix or a new feature (anticipating future expansion, I guess)?

. . .

Sorry, I missed this comment.  Yes, I'm working on support for
an upcoming IPA hardware version that has 5 resources of each
type.  And it is a bug fix, though the bug doesn't bite us
(because the maximum number of resources supported is even),
so "it turns out to be harmless."

					-Alex