linux-kernel - Re: linux-next: build warning after merge of the spi tree

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Date:   Wed, 15 Jan 2020 12:38:59 +0100
From:   Jean Pihet <jean.pihet@...oldbits.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Mark Brown <broonie@...nel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build warning after merge of the spi tree

Stephen,

On Wed, Jan 15, 2020 at 11:28 AM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi Jean,
>
> On Wed, 15 Jan 2020 10:10:09 +0100 Jean Pihet <jean.pihet@...oldbits.com> wrote:
> >
> > I did not have this warning, it may be a combination of compiler
> > version and build flags. Do you need a fixup patch for it?
>
> That is up to Mark, really.  Unfortunately, Linus will probably get
> this warning during the merge window which he will complain about.

Ok I just sent a fixup patch to Mark (on spi ML). Could it still reach 5.6?

>
> It is really weird, as there are three other references to rx_wlen
> immediately before the one complained about ... so maybe this is a bug
> in the compiler I am using (gcc 9.2.1 from Debian, cross compiler
> ppc64le hosted).
Yes indeed it is weird. Only some compiler versions are throwing the warning.

Thanks,
Jean

>
> --
> Cheers,
> Stephen Rothwell