Re: linux-next: build failure after merge of the akpm-current tree

Andy Shevchenko
2020-10-29T11:07:20Z

On Thu, Oct 29, 2020 at 03:08:09PM +1100, Stephen Rothwell wrote:
> After merging the akpm-current tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> lib/math/div64.c: In function 'mul_u64_u64_div_u64':
> lib/math/div64.c:202:6: error: implicit declaration of function 'ilog2' [-Werror=implicit-function-declaration]
> 202 | if (ilog2(a) + ilog2(b) > 62) {
> | ^~~~~
>
> Caused by commit
>
> 4ec993a18ff6 ("kernel.h: Split out mathematical helpers")
>
> I have applied the following patch for today:

Right, thanks! It seems x86 has this inclusion somewhere else and my patch
reveals this on PPC which has cleaner inclusion chain.

Andrew, can you attach this fix to your tree?

--
With Best Regards,
Andy Shevchenko