Re: [PATCH 1/4] of/fdt: Update zone_dma_bits when running in bcm2711

[kernel test robot]

Hi Nicolas,

I love your patch! Perhaps something to improve:

[auto build test WARNING on next-20201001]
[also build test WARNING on v5.9-rc7]
[cannot apply to robh/for-next arm64/for-next/core hnaz-linux-mm/master linus/master v5.9-rc7 v5.9-rc6 v5.9-rc5]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Nicolas-Saenz-Julienne/arm64-Default-to-32-bit-wide-ZONE_DMA/20201002-002007
base:    d39294091fee6b89d9c4a683bb19441b25098330
config: arm64-randconfig-r005-20200930 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project bcd05599d0e53977a963799d6ee4f6e0bc21331b)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/0day-ci/linux/commit/7d073ab6c280772b1bcf9e337528be2138d0bc85
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Nicolas-Saenz-Julienne/arm64-Default-to-32-bit-wide-ZONE_DMA/20201002-002007
        git checkout 7d073ab6c280772b1bcf9e337528be2138d0bc85
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/of/fdt.c:1202:13: warning: no previous prototype for function 'early_init_dt_update_zone_dma_bits' [-Wmissing-prototypes]
   void __init early_init_dt_update_zone_dma_bits(void)
               ^
   drivers/of/fdt.c:1202:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init early_init_dt_update_zone_dma_bits(void)
   ^
   static 
   1 warning generated.

vim +/early_init_dt_update_zone_dma_bits +1202 drivers/of/fdt.c

  1201	
> 1202	void __init early_init_dt_update_zone_dma_bits(void)
  1203	{
  1204		unsigned long dt_root = of_get_flat_dt_root();
  1205	
  1206		if (of_flat_dt_is_compatible(dt_root, "brcm,bcm2711"))
  1207			zone_dma_bits = 30;
  1208	}
  1209	

---
0-DAY CI Kernel Test Service, Intel Corporation
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Attachment: .config.gz
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