linux-kernel - Re: [kbuild-all] [PATCH v4 2/3] hwmon: (adt7475) temperature smoothing

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Date:   Tue, 16 May 2017 22:24:39 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Ye Xiaolong <xiaolong.ye@...el.com>,
        Chris Packham <Chris.Packham@...iedtelesis.co.nz>
Cc:     kbuild test robot <lkp@...el.com>,
        "linux-hwmon@...r.kernel.org" <linux-hwmon@...r.kernel.org>,
        "jdelvare@...e.com" <jdelvare@...e.com>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        Jonathan Corbet <corbet@....net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kbuild-all@...org" <kbuild-all@...org>
Subject: Re: [kbuild-all] [PATCH v4 2/3] hwmon: (adt7475) temperature
 smoothing

On 05/16/2017 09:39 PM, Ye Xiaolong wrote:
> On 05/17, Chris Packham wrote:
>> On 17/05/17 15:09, Ye Xiaolong wrote:
>>> On 05/16, Chris Packham wrote:
>>>> On 16/05/17 20:23, kbuild test robot wrote:
>>>>> Hi Chris,
>>>>>
>>>>> [auto build test ERROR on hwmon/hwmon-next]
>>>>> [also build test ERROR on v4.12-rc1 next-20170516]
>>>>> [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/Chris-Packham/hwmon-adt7475-fan-stall-prevention/20170515-093530
>>>>> base:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
>>>>> config: x86_64-rhel (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 errors (new ones prefixed by >>):
>>>>>
>>>>>    drivers/hwmon/adt7475.c: In function 'set_temp_st':
>>>>>>> drivers/hwmon/adt7475.c:622:9: error: implicit declaration of function 'find_closest_descending' [-Werror=implicit-function-declaration]
>>>>>       val = find_closest_descending(val, ad7475_st_map,
>>>>>             ^~~~~~~~~~~~~~~~~~~~~~~
>>>>>    cc1: some warnings being treated as errors
>>>>>
>>>>> vim +/find_closest_descending +622 drivers/hwmon/adt7475.c
>>>>>
>>>>>    616			shift = 4;
>>>>>    617			idx = 1;
>>>>>    618			break;
>>>>>    619		}
>>>>>    620	
>>>>>    621		if (val > 0) {
>>>>>  > 622			val = find_closest_descending(val, ad7475_st_map,
>>>>>    623						      ARRAY_SIZE(ad7475_st_map));
>>>>>    624			val |= 0x8;
>>>>>    625		}
>>>>>
>>>>> ---
>>>>> 0-DAY kernel test infrastructure                Open Source Technology Center
>>>>> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
>>>>>
>>>>
>>>> I'm not sure how this is failing. find_closest_descending() is a macro
>>>> defined in linux/util_macros.h which is explicitly included in
>>>> drivers/hwmon/adt7475.c. Aside from the include guards there's nothing
>>>> conditional about it.
>>>
>>> Hi,
>>>
>>> 0day bot applied your patchset on top of commit 6eaaea1 ("hwmon: (pmbus) Add client driver for IR35221"),
>>> is it wrong or you have some prerequisite patches?
>
> Thanks for the info, seems we need to improve the kbuild bot by pulling the
> latest tree before applying new patches.
>

No worries. I don't mind the occasional false positive. Better a false positive than a missed bug.

Guenter

> Thanks,
> Xiaolong
>>>
>>
>> Looks like it's missing
>> https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git/commit/?h=hwmon-next&id=bbb4dd0ff
>> which was part of the series but was applied after v3 so I didn't send
>> it out with v4.
>