linux-kernel - Re: [PATCH V6 4/7] mfd: da9061: MFD core support

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Date:   Tue, 28 Mar 2017 10:36:43 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     kbuild test robot <lkp@...el.com>,
        Steve Twiss <stwiss.opensource@...semi.com>,
        "kbuild-all@...org" <kbuild-all@...org>,
        LINUX-KERNEL <linux-kernel@...r.kernel.org>,
        DEVICETREE <devicetree@...r.kernel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Guenter Roeck <linux@...ck-us.net>,
        LINUX-INPUT <linux-input@...r.kernel.org>,
        LINUX-PM <linux-pm@...r.kernel.org>,
        LINUX-WATCHDOG <linux-watchdog@...r.kernel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Support Opensource <support.opensource@...semi.com>,
        Wim Van Sebroeck <wim@...ana.be>,
        Zhang Rui <rui.zhang@...el.com>
Subject: Re: [PATCH V6 4/7] mfd: da9061: MFD core support

Hi Lee,

On Tue, Mar 28, 2017 at 10:21 AM, Lee Jones <lee.jones@...aro.org> wrote:
>> [auto build test WARNING on ljones-mfd/for-mfd-next]
>> [also build test WARNING on v4.11-rc4 next-20170327]
>> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>>
>> url:    https://github.com/0day-ci/linux/commits/Steve-Twiss/Documentation-devicetree-watchdog-da9062-61-watchdog-timer-binding/20170327-215359
>> base:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next
>> config: x86_64-randconfig-x009-201713 (attached as .config)
>> compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
>> reproduce:
>>         # save the attached .config to linux build tree
>>         make ARCH=x86_64
>>
>> All warnings (new ones prefixed by >>):
>>
>>    drivers//mfd/da9062-core.c: In function 'da9062_i2c_probe':
>> >> drivers//mfd/da9062-core.c:845:21: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
>>       chip->chip_type = (int)match->data;
>>                        ^
>
> Please use longs or enums.

Enums would still give a warning on 64-bit.
The simple fix is change the cast from (int) to (uintptr_t).

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds