linux-kernel - Re: drivers/gpu/drm/ingenic/ingenic-drm-drv.c:undefined reference to `clk_get

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Date:   Fri, 18 Sep 2020 10:40:03 +0800
From:   Rong Chen <rong.a.chen@...el.com>
To:     Paul Cercueil <paul@...pouillou.net>,
        kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Sam Ravnborg <sam@...nborg.org>
Subject: Re: drivers/gpu/drm/ingenic/ingenic-drm-drv.c:undefined reference to
 `clk_get_parent'



On 9/15/20 9:20 PM, Paul Cercueil wrote:
> Hi,
>
> Le mer. 9 sept. 2020 à 10:28, kernel test robot <lkp@...el.com> a écrit :
>> Hi Paul,
>>
>> First bad commit (maybe != root cause):
>>
>> tree: 
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
>> master
>> head:   34d4ddd359dbcdf6c5fb3f85a179243d7a1cb7f8
>> commit: 54fe894219903e32f5154265f46ed1eb5cdc2f5f drm/ingenic: Rename 
>> ingenic-drm.c to ingenic-drm-drv.c
>> date:   8 weeks ago
>> config: mips-randconfig-r022-20200909 (attached as .config)
>> compiler: mips-linux-gcc (GCC) 9.3.0
>> reproduce (this is a W=1 build):
>>         wget 
>> https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross 
>> -O ~/bin/make.cross
>>         chmod +x ~/bin/make.cross
>>         git checkout 54fe894219903e32f5154265f46ed1eb5cdc2f5f
>>         # save the attached .config to linux build tree
>>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 
>> make.cross ARCH=mips
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@...el.com>
>>
>> All errors (new ones prefixed by >>):
>>
>>    mips-linux-ld: drivers/gpu/drm/ingenic/ingenic-drm-drv.o: in 
>> function `ingenic_drm_probe':
>>>>  drivers/gpu/drm/ingenic/ingenic-drm-drv.c:(.text+0xc90): undefined 
>>>> reference to `clk_get_parent'
>>    mips-linux-ld: drivers/mmc/host/mtk-sd.o: in function 
>> `msdc_set_mclk':
>>    drivers/mmc/host/mtk-sd.c:(.text+0x26fc): undefined reference to 
>> `clk_get_parent'
>>    mips-linux-ld: drivers/mmc/host/mtk-sd.c:(.text+0x27c0): undefined 
>> reference to `clk_get_parent'
>>
>
> clk_get_parent() is either provided if CONFIG_HAVE_CLK, or it's a 
> inline dummy in clk.h otherwise. Given it chokes on other drivers too, 
> I would say this is a false positive.
>
> -Paul
>

Hi Paul,

Sorry for the inconvenience, the bot can't distinguish the errors yet if 
only file name changed.
we'll continue to improve it.

Best Regards,
Rong Chen