Re: [PATCH 1/8] bitops: protect find_first_{,zero}_bit properly

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To: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Subject: Re: [PATCH 1/8] bitops: protect find_first_{,zero}_bit properly
From: Yury Norov <yury.norov@xxxxxxxxx>
Date: Mon, 28 Jun 2021 18:29:31 -0700
Cc: Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Linux-Arch <linux-arch@xxxxxxxxxxxxxxx>, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Yoshinori Sato <ysato@xxxxxxxxxxxxx>, Brian Cain <bcain@xxxxxxxxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, Jonas Bonn <jonas@xxxxxxxxxxxx>, Stefan Kristiansson <stefan.kristiansson@xxxxxxxxxxxxx>, "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Heiko Carstens <hca@xxxxxxxxxxxxx>, Rich Felker <dalias@xxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, Jaegeuk Kim <jaegeuk@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>, Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Alexander Lobakin <alobakin@xxxxx>, Samuel Mendoza-Jonas <sam@xxxxxxxxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>, Alexey Klimov <aklimov@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, kernel test robot <lkp@xxxxxxxxx>
In-reply-to: <CAHp75VcfX4X5w7yeheostadvfTjhnnzgsTyhMM-9wgS9Lgfn1g@mail.gmail.com>
References: <20210612123639.329047-1-yury.norov@gmail.com> <20210612123639.329047-2-yury.norov@gmail.com> <CAHp75VcfX4X5w7yeheostadvfTjhnnzgsTyhMM-9wgS9Lgfn1g@mail.gmail.com>

On Sun, Jun 13, 2021 at 12:38:52AM +0300, Andy Shevchenko wrote:
> On Sat, Jun 12, 2021 at 3:38 PM Yury Norov <yury.norov@xxxxxxxxx> wrote:
> >
> > find_first_bit() and find_first_zero_bit() are not protected with
> > ifdefs as other functions in find.h. It causes build errors on some
> > platforms if CONFIG_GENERIC_FIND_FIRST_BIT is enabled.
> 
> Fixes?

Fixes: 2cc7b6a44ac2 ("lib: add fast path for find_first_*_bit() and find_last_bit()")

> > Reported-by: kernel test robot <lkp@xxxxxxxxx>
> > Signed-off-by: Yury Norov <yury.norov@xxxxxxxxx>

References:
- [PATCH 0/8] all: use find_next_*_bit() instead of find_first_*_bit() where possible
  - From: Yury Norov
- [PATCH 1/8] bitops: protect find_first_{,zero}_bit properly
  - From: Yury Norov
- Re: [PATCH 1/8] bitops: protect find_first_{,zero}_bit properly
  - From: Andy Shevchenko

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