linux-kernel - [linux-stable-rc:queue/5.10 199/544] drivers/gpu/drm/vc4/vc4_dsi.c:617:35: warning: unused variable 'dsi0

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Message-ID: <202208161526.UJs2840c-lkp@intel.com>
Date:   Tue, 16 Aug 2022 15:54:47 +0800
From:   kernel test robot <lkp@...el.com>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Sasha Levin <sashal@...nel.org>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>
Subject: [linux-stable-rc:queue/5.10 199/544]
 drivers/gpu/drm/vc4/vc4_dsi.c:617:35: warning: unused variable 'dsi0_regs'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git queue/5.10
head:   b1f7647ff950714d3eb2ef0f32c7f84050dd6192
commit: 8402723ecfe0a2b2f8d4934794a45b1132689255 [199/544] drm/vc4: dsi: Introduce a variant structure
config: arm64-randconfig-r022-20220815 (https://download.01.org/0day-ci/archive/20220816/202208161526.UJs2840c-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 6afcc4a459ead8809a0d6d9b4bf7b64bcc13582b)
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://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=8402723ecfe0a2b2f8d4934794a45b1132689255
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc queue/5.10
        git checkout 8402723ecfe0a2b2f8d4934794a45b1132689255
        # 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=arm64 SHELL=/bin/bash drivers/gpu/drm/vc4/

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/gpu/drm/vc4/vc4_dsi.c:617:35: warning: unused variable 'dsi0_regs' [-Wunused-const-variable]
   static const struct debugfs_reg32 dsi0_regs[] = {
                                     ^
   1 warning generated.


vim +/dsi0_regs +617 drivers/gpu/drm/vc4/vc4_dsi.c

4078f575714423 Eric Anholt 2017-01-31  616  
3051719af11eb4 Eric Anholt 2019-02-20 @617  static const struct debugfs_reg32 dsi0_regs[] = {
3051719af11eb4 Eric Anholt 2019-02-20  618  	VC4_REG32(DSI0_CTRL),
3051719af11eb4 Eric Anholt 2019-02-20  619  	VC4_REG32(DSI0_STAT),
3051719af11eb4 Eric Anholt 2019-02-20  620  	VC4_REG32(DSI0_HSTX_TO_CNT),
3051719af11eb4 Eric Anholt 2019-02-20  621  	VC4_REG32(DSI0_LPRX_TO_CNT),
3051719af11eb4 Eric Anholt 2019-02-20  622  	VC4_REG32(DSI0_TA_TO_CNT),
3051719af11eb4 Eric Anholt 2019-02-20  623  	VC4_REG32(DSI0_PR_TO_CNT),
3051719af11eb4 Eric Anholt 2019-02-20  624  	VC4_REG32(DSI0_DISP0_CTRL),
3051719af11eb4 Eric Anholt 2019-02-20  625  	VC4_REG32(DSI0_DISP1_CTRL),
3051719af11eb4 Eric Anholt 2019-02-20  626  	VC4_REG32(DSI0_INT_STAT),
3051719af11eb4 Eric Anholt 2019-02-20  627  	VC4_REG32(DSI0_INT_EN),
3051719af11eb4 Eric Anholt 2019-02-20  628  	VC4_REG32(DSI0_PHYC),
3051719af11eb4 Eric Anholt 2019-02-20  629  	VC4_REG32(DSI0_HS_CLT0),
3051719af11eb4 Eric Anholt 2019-02-20  630  	VC4_REG32(DSI0_HS_CLT1),
3051719af11eb4 Eric Anholt 2019-02-20  631  	VC4_REG32(DSI0_HS_CLT2),
3051719af11eb4 Eric Anholt 2019-02-20  632  	VC4_REG32(DSI0_HS_DLT3),
3051719af11eb4 Eric Anholt 2019-02-20  633  	VC4_REG32(DSI0_HS_DLT4),
3051719af11eb4 Eric Anholt 2019-02-20  634  	VC4_REG32(DSI0_HS_DLT5),
3051719af11eb4 Eric Anholt 2019-02-20  635  	VC4_REG32(DSI0_HS_DLT6),
3051719af11eb4 Eric Anholt 2019-02-20  636  	VC4_REG32(DSI0_HS_DLT7),
3051719af11eb4 Eric Anholt 2019-02-20  637  	VC4_REG32(DSI0_PHY_AFEC0),
3051719af11eb4 Eric Anholt 2019-02-20  638  	VC4_REG32(DSI0_PHY_AFEC1),
3051719af11eb4 Eric Anholt 2019-02-20  639  	VC4_REG32(DSI0_ID),
4078f575714423 Eric Anholt 2017-01-31  640  };
4078f575714423 Eric Anholt 2017-01-31  641  

:::::: The code at line 617 was first introduced by commit
:::::: 3051719af11eb48dc8947826cfb66dbe0f281c7d drm/vc4: Use drm_print_regset32() for our debug register dumping.

:::::: TO: Eric Anholt <eric@...olt.net>
:::::: CC: Eric Anholt <eric@...olt.net>

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