Hi "Christian, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.17-rc7 next-20220310] [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/Christian-K-nig/dma-buf-add-dma_fence_unwrap/20220311-190352 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 79b00034e9dcd2b065c1665c8b42f62b6b80a9be config: arm64-randconfig-r014-20220310 (https://download.01.org/0day-ci/archive/20220312/202203120115.Qe4GABIV-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 276ca87382b8f16a65bddac700202924228982f6) 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://github.com/0day-ci/linux/commit/ca3584ac05c4a450e69b1c6bcb0672b5ab026c7c git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Christian-K-nig/dma-buf-add-dma_fence_unwrap/20220311-190352 git checkout ca3584ac05c4a450e69b1c6bcb0672b5ab026c7c # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/dma-buf/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from drivers/dma-buf/sync_file.c:8: include/linux/dma-fence-unwrap.h:44:18: error: implicit declaration of function 'dma_fence_chain_contained' [-Werror,-Wimplicit-function-declaration] cursor->array = dma_fence_chain_contained(cursor->chain); ^ include/linux/dma-fence-unwrap.h:44:18: note: did you mean 'dma_fence_chain_init'? include/linux/dma-fence-chain.h:108:6: note: 'dma_fence_chain_init' declared here void dma_fence_chain_init(struct dma_fence_chain *chain, ^ In file included from drivers/dma-buf/sync_file.c:8: >> include/linux/dma-fence-unwrap.h:44:16: warning: incompatible integer to pointer conversion assigning to 'struct dma_fence *' from 'int' [-Wint-conversion] cursor->array = dma_fence_chain_contained(cursor->chain); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/dma-fence-unwrap.h:46:9: error: implicit declaration of function 'dma_fence_array_first' [-Werror,-Wimplicit-function-declaration] return dma_fence_array_first(cursor->array); ^ include/linux/dma-fence-unwrap.h:46:9: note: did you mean 'dma_fence_array_create'? include/linux/dma-fence-array.h:77:25: note: 'dma_fence_array_create' declared here struct dma_fence_array *dma_fence_array_create(int num_fences, ^ In file included from drivers/dma-buf/sync_file.c:8: >> include/linux/dma-fence-unwrap.h:46:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'struct dma_fence *' [-Wint-conversion] return dma_fence_array_first(cursor->array); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/dma-fence-unwrap.h:77:8: error: implicit declaration of function 'dma_fence_array_next' [-Werror,-Wimplicit-function-declaration] tmp = dma_fence_array_next(cursor->array, cursor->index); ^ include/linux/dma-fence-unwrap.h:77:6: warning: incompatible integer to pointer conversion assigning to 'struct dma_fence *' from 'int' [-Wint-conversion] tmp = dma_fence_array_next(cursor->array, cursor->index); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 3 warnings and 3 errors generated. vim +44 include/linux/dma-fence-unwrap.h 088aa14c0f5cad Christian König 2022-03-11 33 088aa14c0f5cad Christian König 2022-03-11 34 /** 088aa14c0f5cad Christian König 2022-03-11 35 * dma_fence_unwrap_array - helper to unwrap dma_fence_arrays 088aa14c0f5cad Christian König 2022-03-11 36 * @cursor: cursor to initialize 088aa14c0f5cad Christian König 2022-03-11 37 * 088aa14c0f5cad Christian König 2022-03-11 38 * Helper function to unwrap dma_fence_array containers, don't touch directly. 088aa14c0f5cad Christian König 2022-03-11 39 * Use dma_fence_unwrap_first/next instead. 088aa14c0f5cad Christian König 2022-03-11 40 */ 088aa14c0f5cad Christian König 2022-03-11 41 static inline struct dma_fence * 088aa14c0f5cad Christian König 2022-03-11 42 dma_fence_unwrap_array(struct dma_fence_unwrap * cursor) 088aa14c0f5cad Christian König 2022-03-11 43 { 088aa14c0f5cad Christian König 2022-03-11 @44 cursor->array = dma_fence_chain_contained(cursor->chain); 088aa14c0f5cad Christian König 2022-03-11 45 cursor->index = 0; 088aa14c0f5cad Christian König 2022-03-11 @46 return dma_fence_array_first(cursor->array); 088aa14c0f5cad Christian König 2022-03-11 47 } 088aa14c0f5cad Christian König 2022-03-11 48 --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
