linux-kernel - Re: [linuxppc:next-test 75/91] arch/powerpc/kernel/prom_parse.c:10:6: warning: no previous prototype for 'of_parse_dma

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Date:   Fri, 6 May 2022 06:59:02 +0000
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Michael Ellerman <mpe@...erman.id.au>
CC:     "kbuild-all@...ts.01.org" <kbuild-all@...ts.01.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        kernel test robot <lkp@...el.com>
Subject: Re: [linuxppc:next-test 75/91] arch/powerpc/kernel/prom_parse.c:10:6:
 warning: no previous prototype for 'of_parse_dma_window'



Le 06/05/2022 à 05:46, kernel test robot a écrit :
> tree:   https://github.com/linuxppc/linux next-test
> head:   1d8abffc14aef88bfe1ad036084070af62f30c03
> commit: 34fa52eec206db38399dc9b54f2da2eed4fdad5e [75/91] powerpc: Remove asm/prom.h from all files that don't need it
> config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220506/202205061138.zH9VucCL-lkp@intel.com/config)
> compiler: powerpc-linux-gcc (GCC) 11.3.0
> 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
>          # https://github.com/linuxppc/linux/commit/34fa52eec206db38399dc9b54f2da2eed4fdad5e
>          git remote add linuxppc https://github.com/linuxppc/linux
>          git fetch --no-tags linuxppc next-test
>          git checkout 34fa52eec206db38399dc9b54f2da2eed4fdad5e
>          # save the config file
>          mkdir build_dir && cp config build_dir/.config
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/kernel/
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All warnings (new ones prefixed by >>):
> 
>>> arch/powerpc/kernel/prom_parse.c:10:6: warning: no previous prototype for 'of_parse_dma_window' [-Wmissing-prototypes]
>        10 | void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window,
>           |      ^~~~~~~~~~~~~~~~~~~
> 
> 

Ok, so asm/prom.h must remain in arch/powerpc/kernel/prom_parse.c to get 
of_parse_dma_window() prototype.

Michael, can you drop the hunk when applying ?

Thanks
Christophe