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From:   Vitor Massaru Iha <vitor@massaru.org>
Date:   Thu, 15 Oct 2020 07:43:51 -0300
Message-ID: <CADQ6JjX0tg51M0FsD+DmAaDcnWB0wrihj4WCq_z6En=tzL=wcg@mail.gmail.com>
Subject: Re: linux-next: build warnings after merge of the kunit-next tree
To:     Stephen Rothwell <sfr@canb.auug.org.au>
Cc:     Shuah Khan <skhan@linuxfoundation.org>,
        Brendan Higgins <brendanhiggins@google.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>
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Hi Stephen,

On Thu, Oct 15, 2020 at 2:31 AM Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> Hi all,
>
> After merging the kunit-next tree, today's linux-next build (x86_64
> allmodconfig) produced this warning:
>
> lib/bitfield_kunit.c: In function 'test_bitfields_compile':
> lib/bitfield_kunit.c:136:21: warning: unsigned conversion from 'int' to 'u16' {aka 'short unsigned int'} changes value from '393216' to '0' [-Woverflow]
>   136 |  u16_encode_bits(0, 0x60000);
>       |                     ^~~~~~~
> At top level:
> lib/bitfield_kunit.c:129:20: warning: 'test_bitfields_compile' defined but not used [-Wunused-function]
>   129 | static void __init test_bitfields_compile(struct kunit *context)
>       |                    ^~~~~~~~~~~~~~~~~~~~~~
>
> Introduced by commit
>
>   d2585f5164c2 ("lib: kunit: add bitfield test conversion to KUnit")

I saw the problem, I will send the patch.

Thanks!