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SubjectRe: [PATCH v6 6/6] drm/tegra: output: rgb: Wrap directly-connected panel into DRM bridge
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13.06.2020 00:23, kernel test robot пишет:
> 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)

Interestingly, GCC doesn't report this warning.

> 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@intel.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.


There are two unused structs in the code and one is referenced by the
other, I'll remove the unused structs in v7.

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