linux-kernel - Re: [PATCH] drm/amd/display: Fix missing declaration of enable_kernel

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Date:   Mon, 19 Oct 2020 17:40:35 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     kernel test robot <lkp@...el.com>,
        Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     kbuild-all@...ts.01.org, dri-devel@...ts.freedesktop.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        amd-gfx@...ts.freedesktop.org
Subject: Re: [PATCH] drm/amd/display: Fix missing declaration of
 enable_kernel_vsx()



Le 19/10/2020 à 14:52, kernel test robot a écrit :
> Hi Christophe,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on linus/master]
> [also build test ERROR on v5.9 next-20201016]
> [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/Christophe-Leroy/drm-amd-display-Fix-missing-declaration-of-enable_kernel_vsx/20201019-174155
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 7cf726a59435301046250c42131554d9ccc566b8
> config: arc-randconfig-r013-20201019 (attached as .config)
> compiler: arceb-elf-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
>          # https://github.com/0day-ci/linux/commit/33f0ea8bebc4132d957107f55776d8f1e02df928
>          git remote add linux-review https://github.com/0day-ci/linux
>          git fetch --no-tags linux-review Christophe-Leroy/drm-amd-display-Fix-missing-declaration-of-enable_kernel_vsx/20201019-174155
>          git checkout 33f0ea8bebc4132d957107f55776d8f1e02df928
>          # save the attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc
> 
> 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 >>):
> 
>     In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services_types.h:29,
>                      from drivers/gpu/drm/amd/amdgpu/../include/dm_pp_interface.h:26,
>                      from drivers/gpu/drm/amd/amdgpu/amdgpu.h:67,
>                      from drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c:40:
>>> drivers/gpu/drm/amd/amdgpu/../display/dc/os_types.h:36:10: fatal error: asm/switch-to.h: No such file or directory
>        36 | #include <asm/switch-to.h>
>           |          ^~~~~~~~~~~~~~~~~
>     compilation terminated.


Argh ! Yes that's a typo. And anyway it fixes nothing because <asm/switch_to.h> is already included.

The issue is that enable_kernel_vsx() is only declared when CONFIG_VSX is set. The simplest solution 
will probably be to declare it at all time.

Christophe

> 
> vim +36 drivers/gpu/drm/amd/amdgpu/../display/dc/os_types.h
> 
>      34	
>      35	#include <asm/byteorder.h>
>    > 36	#include <asm/switch-to.h>
>      37	
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
>