Re: [PATCH v4 0/7] firmware: smccc: Add basic SMCCC v1.2 + ARCH_SOC_ID support

Arnd Bergmann
2020-05-21T09:31:11Z

On Thu, May 21, 2020 at 11:17 AM Will Deacon <will@kernel.org> wrote:
> On Thu, May 21, 2020 at 11:06:23AM +0200, Arnd Bergmann wrote:
> > On Thu, May 21, 2020 at 10:11 AM Sudeep Holla <sudeep.holla@arm.com> wrote:
> > Note that the warning should come up for either W=1 or C=1, and I also
> > think that
> > new code should generally be written sparse-clean and have no warnings with
> > 'make C=1' as a rule.
>
> Fair enough. Is anybody working on a tree-wide sweep for this, like we've
> done for other things such as zero-length arrays? If so, I can start
> enforcing this in the arch code as well (I haven't been so far, even though
> I do run sparse on every commit).

I've done some work on that a few years ago, and there are always
some cleanup patches for C=1 and W=1 warnings, most recently
with an increase from Huawei's automated build testing + manual
patching.

I have not looked in a while, but it always seemed to be somewhere
between "too much to do by myself" and "small enough that it should
really be done" as build warnings go.

Arnd