linux-kernel - drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c:607:34: warning: unused variable 'mdp_comp_dt

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Message-ID: <202212151924.njckwQVu-lkp@intel.com>
Date:   Thu, 15 Dec 2022 19:55:16 +0800
From:   kernel test robot <lkp@...el.com>
To:     Moudy Ho <moudy.ho@...iatek.com>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org,
        Ping-Hsun Wu <ping-hsun.wu@...iatek.com>,
        daoyuan huang <daoyuan.huang@...iatek.com>,
        Hans Verkuil <hverkuil@...all.nl>
Subject: drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c:607:34:
 warning: unused variable 'mdp_comp_dt_ids'

Hi Moudy,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   041fae9c105ae342a4245cf1e0dc56a23fbb9d3c
commit: 61890ccaefaff89f5babd2c8412fd222c3f5fe38 media: platform: mtk-mdp3: add MediaTek MDP3 driver
date:   4 months ago
config: hexagon-randconfig-r045-20221214
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 98b13979fb05f3ed288a900deb843e7b27589e58)
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=61890ccaefaff89f5babd2c8412fd222c3f5fe38
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 61890ccaefaff89f5babd2c8412fd222c3f5fe38
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/media/platform/mediatek/mdp3/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c:607:34: warning: unused variable 'mdp_comp_dt_ids' [-Wunused-const-variable]
   static const struct of_device_id mdp_comp_dt_ids[] = {
                                    ^
>> drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c:627:34: warning: unused variable 'mdp_sub_comp_dt_ids' [-Wunused-const-variable]
   static const struct of_device_id mdp_sub_comp_dt_ids[] = {
                                    ^
   2 warnings generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for VIDEO_MEDIATEK_VPU
   Depends on [n]: MEDIA_SUPPORT [=y] && MEDIA_PLATFORM_SUPPORT [=y] && MEDIA_PLATFORM_DRIVERS [=y] && V4L_MEM2MEM_DRIVERS [=n] && VIDEO_DEV [=y] && (ARCH_MEDIATEK || COMPILE_TEST [=y])
   Selected by [y]:
   - VIDEO_MEDIATEK_MDP3 [=y] && MEDIA_SUPPORT [=y] && MEDIA_PLATFORM_SUPPORT [=y] && MEDIA_PLATFORM_DRIVERS [=y] && (MTK_IOMMU [=n] || COMPILE_TEST [=y]) && VIDEO_DEV [=y] && (ARCH_MEDIATEK || COMPILE_TEST [=y]) && HAS_DMA [=y] && REMOTEPROC [=y]


vim +/mdp_comp_dt_ids +607 drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c

   606	
 > 607	static const struct of_device_id mdp_comp_dt_ids[] = {
   608		{
   609			.compatible = "mediatek,mt8183-mdp3-rdma",
   610			.data = (void *)MDP_COMP_TYPE_RDMA,
   611		}, {
   612			.compatible = "mediatek,mt8183-mdp3-ccorr",
   613			.data = (void *)MDP_COMP_TYPE_CCORR,
   614		}, {
   615			.compatible = "mediatek,mt8183-mdp3-rsz",
   616			.data = (void *)MDP_COMP_TYPE_RSZ,
   617		}, {
   618			.compatible = "mediatek,mt8183-mdp3-wrot",
   619			.data = (void *)MDP_COMP_TYPE_WROT,
   620		}, {
   621			.compatible = "mediatek,mt8183-mdp3-wdma",
   622			.data = (void *)MDP_COMP_TYPE_WDMA,
   623		},
   624		{}
   625	};
   626	
 > 627	static const struct of_device_id mdp_sub_comp_dt_ids[] = {
   628		{
   629			.compatible = "mediatek,mt8183-mdp3-wdma",
   630			.data = (void *)MDP_COMP_TYPE_PATH,
   631		}, {
   632			.compatible = "mediatek,mt8183-mdp3-wrot",
   633			.data = (void *)MDP_COMP_TYPE_PATH,
   634		},
   635		{}
   636	};
   637	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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