linux-kernel - Re: [PATCH v6 6/6] drm/tegra: output: rgb: Wrap directly-connected panel into DRM bridge

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Message-ID: <202006130511.AE6Kvrjm%lkp@intel.com>
Date:   Sat, 13 Jun 2020 05:23:23 +0800
From:   kernel test robot <lkp@...el.com>
To:     Dmitry Osipenko <digetx@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 6/6] drm/tegra: output: rgb: Wrap directly-connected
 panel into DRM bridge

Hi Dmitry,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on next-20200612]
[cannot apply to tegra/for-next robh/for-next v5.7]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Dmitry-Osipenko/Support-DRM-bridges-on-NVIDIA-Tegra/20200609-213026
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git abfbb29297c27e3f101f348dc9e467b0fe70f919
config: arm64-randconfig-r026-20200612 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3b43f006294971b8049d4807110032169780e5b8)
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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 

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 >>, old ones prefixed by <<):

>> drivers/gpu/drm/tegra/rgb.c:100:48: warning: unused variable 'tegra_rgb_connector_helper_funcs' [-Wunused-const-variable]
static const struct drm_connector_helper_funcs tegra_rgb_connector_helper_funcs = {
^
1 warning generated.

vim +/tegra_rgb_connector_helper_funcs +100 drivers/gpu/drm/tegra/rgb.c

3b0e58554873d1 Thierry Reding 2014-12-16   99  
3b0e58554873d1 Thierry Reding 2014-12-16 @100  static const struct drm_connector_helper_funcs tegra_rgb_connector_helper_funcs = {
3b0e58554873d1 Thierry Reding 2014-12-16  101  	.get_modes = tegra_output_connector_get_modes,
3b0e58554873d1 Thierry Reding 2014-12-16  102  	.mode_valid = tegra_rgb_connector_mode_valid,
3b0e58554873d1 Thierry Reding 2014-12-16  103  };
3b0e58554873d1 Thierry Reding 2014-12-16  104  

:::::: The code at line 100 was first introduced by commit
:::::: 3b0e58554873d1034beef737f15c7aa46492ff98 drm/tegra: rgb: Demidlayer

:::::: TO: Thierry Reding <treding@...dia.com>
:::::: CC: Thierry Reding <treding@...dia.com>

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

Download attachment ".config.gz" of type "application/gzip" (43294 bytes)