linux-kernel - [tobetter-linux:odroid-5.14.y 43/67] drivers/gpu/drm/drm_mipi_dbi.c:77:17: warning: unused variable 'mipi_dbi_dcs_read

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Message-ID: <202109010404.xg9IfsYt-lkp@intel.com>
Date:   Wed, 1 Sep 2021 04:24:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     Dongjin Kim <tobetter@...il.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [tobetter-linux:odroid-5.14.y 43/67]
 drivers/gpu/drm/drm_mipi_dbi.c:77:17: warning: unused variable
 'mipi_dbi_dcs_read_commands'

tree:   https://github.com/tobetter/linux odroid-5.14.y
head:   813dade16c755c4aeff738df4e8e5ebe6da4c515
commit: 2508bf434e4b175f1614c7c5703cc389b6099c8c [43/67] ODROID-COMMON: gpu/drm: Add new Tiny DRM driver with Ili9488
config: hexagon-randconfig-r001-20210831 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4b1fde8a2b681dad2ce0c082a5d6422caa06b0bc)
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/tobetter/linux/commit/2508bf434e4b175f1614c7c5703cc389b6099c8c
        git remote add tobetter-linux https://github.com/tobetter/linux
        git fetch --no-tags tobetter-linux odroid-5.14.y
        git checkout 2508bf434e4b175f1614c7c5703cc389b6099c8c
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=hexagon 

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 >>):

>> drivers/gpu/drm/drm_mipi_dbi.c:77:17: warning: unused variable 'mipi_dbi_dcs_read_commands' [-Wunused-const-variable]
   static const u8 mipi_dbi_dcs_read_commands[] = {
                   ^
   1 warning generated.


vim +/mipi_dbi_dcs_read_commands +77 drivers/gpu/drm/drm_mipi_dbi.c

02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   76  
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22  @77  static const u8 mipi_dbi_dcs_read_commands[] = {
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   78  	MIPI_DCS_GET_DISPLAY_ID,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   79  	MIPI_DCS_GET_RED_CHANNEL,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   80  	MIPI_DCS_GET_GREEN_CHANNEL,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   81  	MIPI_DCS_GET_BLUE_CHANNEL,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   82  	MIPI_DCS_GET_DISPLAY_STATUS,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   83  	MIPI_DCS_GET_POWER_MODE,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   84  	MIPI_DCS_GET_ADDRESS_MODE,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   85  	MIPI_DCS_GET_PIXEL_FORMAT,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   86  	MIPI_DCS_GET_DISPLAY_MODE,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   87  	MIPI_DCS_GET_SIGNAL_MODE,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   88  	MIPI_DCS_GET_DIAGNOSTIC_RESULT,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   89  	MIPI_DCS_READ_MEMORY_START,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   90  	MIPI_DCS_READ_MEMORY_CONTINUE,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   91  	MIPI_DCS_GET_SCANLINE,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   92  	MIPI_DCS_GET_DISPLAY_BRIGHTNESS,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   93  	MIPI_DCS_GET_CONTROL_DISPLAY,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   94  	MIPI_DCS_GET_POWER_SAVE,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   95  	MIPI_DCS_GET_CABC_MIN_BRIGHTNESS,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   96  	MIPI_DCS_READ_DDB_START,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   97  	MIPI_DCS_READ_DDB_CONTINUE,
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   98  	0, /* sentinel */
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22   99  };
02dd95fe316936 drivers/gpu/drm/tinydrm/mipi-dbi.c Noralf Trønnes 2017-01-22  100  

:::::: The code at line 77 was first introduced by commit
:::::: 02dd95fe316936269a52d6ccb971bb956412b40a drm/tinydrm: Add MIPI DBI support

:::::: TO: Noralf Trønnes <noralf@...nnes.org>
:::::: CC: Noralf Trønnes <noralf@...nnes.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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