linux-kernel - Re: [PATCH 01/21] powerpc: Remove warning on array size when empty

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Message-ID: <CAHp75Ve_zxp4_N_YzzvJ=H8Qs65G5j7bgGBv_TvsZ6Ye2nuECA@mail.gmail.com>
Date:   Mon, 26 Feb 2018 16:45:41 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Mathieu Malaterre <malat@...ian.org>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Jiri Slaby <jslaby@...e.com>,
        "open list:LINUX FOR POWERPC PA SEMI PWRFICIENT" 
        <linuxppc-dev@...ts.ozlabs.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 01/21] powerpc: Remove warning on array size when empty

On Mon, Feb 26, 2018 at 4:44 PM, Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
> On Sun, Feb 25, 2018 at 7:22 PM, Mathieu Malaterre <malat@...ian.org> wrote:

>>  static void __init check_cpu_feature_properties(unsigned long node)
>>  {
>> -       unsigned long i;
>>         struct feature_property *fp = feature_properties;
>>         const __be32 *prop;
>>
>
> Much simpler is just add
>
> if (ARRAY_SIZE() == 0)
>  return;
>
>> -       for (i = 0; i < ARRAY_SIZE(feature_properties); ++i, ++fp) {
>> +       for (; fp != feature_properties + ARRAY_SIZE(feature_properties); ++fp) {

...or convert to while(), which will be more readable.

-- 
With Best Regards,
Andy Shevchenko