Re: [linux-next:master 1851/4903] drivers/soc/samsung/s3c-pm-debug.c:41:2: error: implicit declaration of function 'debug_ll_addr'

[Krzysztof Kozlowski <krzk@kernel.org>]

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On Tue, Sep 08, 2020 at 06:05:59AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   7a6956579ce6950890ea706f6fcf7874a7981f50
> commit: 17132da70eb766785b9b4677bacce18cc11ea442 [1851/4903] ARM: samsung: move pm check code to drivers/soc
> config: arm-randconfig-r001-20200908 (attached as .config)
> compiler: arm-linux-gnueabi-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 17132da70eb766785b9b4677bacce18cc11ea442
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/soc/samsung/s3c-pm-debug.c: In function 's3c_pm_dbg':
>    drivers/soc/samsung/s3c-pm-debug.c:30:2: warning: function 's3c_pm_dbg' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
>       30 |  vsnprintf(buff, sizeof(buff), fmt, va);
>          |  ^~~~~~~~~
>    drivers/soc/samsung/s3c-pm-debug.c: In function 's3c_pm_uart_base':
> >> drivers/soc/samsung/s3c-pm-debug.c:41:2: error: implicit declaration of function 'debug_ll_addr' [-Werror=implicit-function-declaration]
>       41 |  debug_ll_addr(&paddr, &vaddr);
>          |  ^~~~~~~~~~~~~
>    cc1: some warnings being treated as errors

The error is there also on v5.9-rc1. It comes from missing dependency on
MMU by either SAMSUNG_PM_DEBUG or by DEBUG_LL. I'll send a fix.

Best regards,
Krzysztof