Hi Masahiro, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 146620506274bd24d52fb1c589110a30eed8240b commit: 6863f5643dd717376c2fdc85a47a00f9d738a834 kbuild: allow Clang to find unused static inline functions for W=1 build date: 1 year, 4 months ago config: x86_64-randconfig-a014-20210115 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 6077d55381a6aa3e947ef7abdc36a7515c598c8a) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6863f5643dd717376c2fdc85a47a00f9d738a834 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 6863f5643dd717376c2fdc85a47a00f9d738a834 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All errors (new ones prefixed by >>): >> drivers/gpu/drm/i915/i915_sw_fence.c:41:20: error: unused function >> 'debug_fence_init_onstack' [-Werror,-Wunused-function] static inline void debug_fence_init_onstack(struct i915_sw_fence *fence) ^ 1 error generated. vim +/debug_fence_init_onstack +41 drivers/gpu/drm/i915/i915_sw_fence.c fc1584059d6c438b Chris Wilson 2016-11-25 40 214707fc2ce08d09 Chris Wilson 2017-10-12 @41 static inline void debug_fence_init_onstack(struct i915_sw_fence *fence) 214707fc2ce08d09 Chris Wilson 2017-10-12 42 { 214707fc2ce08d09 Chris Wilson 2017-10-12 43 debug_object_init_on_stack(fence, &i915_sw_fence_debug_descr); 214707fc2ce08d09 Chris Wilson 2017-10-12 44 } 214707fc2ce08d09 Chris Wilson 2017-10-12 45 :::::: The code at line 41 was first introduced by commit :::::: 214707fc2ce08d09982bc4fe4b7a1c1f010e82be drm/i915/selftests: Wrap a timer into a i915_sw_fence :::::: TO: Chris Wilson <ch...@chris-wilson.co.uk> :::::: CC: Chris Wilson <ch...@chris-wilson.co.uk> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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