Hi Mikko, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on tegra/for-next] [also build test WARNING on linus/master v5.10-rc5] [cannot apply to tegra-drm/drm/tegra/for-next next-20201124] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Mikko-Perttunen/Host1x-TegraDRM-UAPI/20201120-192927 base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next config: arm-randconfig-r036-20201124 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project df9ae5992889560a8f3c6760b54d5051b47c7bf5) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/0day-ci/linux/commit/d5a3a653d37f5c7e8dfda77be51cc68ed7192b70 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mikko-Perttunen/Host1x-TegraDRM-UAPI/20201120-192927 git checkout d5a3a653d37f5c7e8dfda77be51cc68ed7192b70 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/tegra/uapi/submit.c:114:18: warning: shift count >= width of type [-Wshift-count-overflow] written_ptr |= BIT(39); ^~~~~~~ include/vdso/bits.h:7:26: note: expanded from macro 'BIT' #define BIT(nr) (UL(1) << (nr)) ^ ~~~~ 1 warning generated. vim +114 drivers/gpu/drm/tegra/uapi/submit.c 104 105 static int submit_write_reloc(struct gather_bo *bo, 106 struct drm_tegra_submit_buf *buf, 107 struct tegra_drm_mapping *mapping) 108 { 109 /* TODO check that target_offset is within bounds */ 110 dma_addr_t iova = mapping->iova + buf->reloc.target_offset; 111 u32 written_ptr = (u32)(iova >> buf->reloc.shift); 112 113 if (buf->flags & DRM_TEGRA_SUBMIT_BUF_RELOC_BLOCKLINEAR) > 114 written_ptr |= BIT(39); 115 116 if (buf->reloc.gather_offset_words >= bo->gather_data_words) 117 return -EINVAL; 118 119 buf->reloc.gather_offset_words = array_index_nospec( 120 buf->reloc.gather_offset_words, bo->gather_data_words); 121 122 bo->gather_data[buf->reloc.gather_offset_words] = written_ptr; 123 124 return 0; 125 } 126 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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