Hi Miquel, I love your patch! Perhaps something to improve: [auto build test WARNING on broonie-spi/for-next] [also build test WARNING on mtd/nand/next mtd/mtd/next mtd/mtd/fixes v5.15-rc6 next-20211020] [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/Miquel-Raynal/External-ECC-engines-Macronix-support/20211020-223036 base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next config: hexagon-randconfig-r014-20211021 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 3cea2505fd8d99a9ba0cb625aecfe28a47c4e3f8) 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 # https://github.com/0day-ci/linux/commit/ccf53b4df2cab6209b1c56f22e1a1955f59b8ea0 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Miquel-Raynal/External-ECC-engines-Macronix-support/20211020-223036 git checkout ccf53b4df2cab6209b1c56f22e1a1955f59b8ea0 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon 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/mtd/nand/ecc-mxic.c:480:5: warning: no previous prototype for function 'mxic_ecc_process_data' [-Wmissing-prototypes] int mxic_ecc_process_data(struct mxic_ecc_engine *eng, dma_addr_t dirmap) ^ drivers/mtd/nand/ecc-mxic.c:480:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int mxic_ecc_process_data(struct mxic_ecc_engine *eng, dma_addr_t dirmap) ^ static >> drivers/mtd/nand/ecc-mxic.c:742:29: warning: no previous prototype for function 'mxic_ecc_get_pipelined_ops' [-Wmissing-prototypes] struct nand_ecc_engine_ops *mxic_ecc_get_pipelined_ops(void) ^ drivers/mtd/nand/ecc-mxic.c:742:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct nand_ecc_engine_ops *mxic_ecc_get_pipelined_ops(void) ^ static 2 warnings generated. vim +/mxic_ecc_process_data +480 drivers/mtd/nand/ecc-mxic.c 479 > 480 int mxic_ecc_process_data(struct mxic_ecc_engine *eng, dma_addr_t dirmap) 481 { 482 /* Retrieve the direction */ 483 unsigned int dir = (eng->req->type == NAND_PAGE_READ) ? 484 READ_NAND : WRITE_NAND; 485 486 if (dirmap) 487 writel(dirmap, eng->regs + HC_SLV_ADDR); 488 489 /* Trigger processing */ 490 writel(SDMA_STRT | dir, eng->regs + SDMA_CTRL); 491 492 /* Wait for completion */ 493 return mxic_ecc_data_xfer_wait_for_completion(eng); 494 } 495 EXPORT_SYMBOL_GPL(mxic_ecc_process_data); 496 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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