Hi Mauro, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d2980d8d826554fa6981d621e569a453787472f8 commit: 2023a99811110aebba9eee4aa09ef7bd21a8a249 media: platform: rename mediatek/mtk-jpeg/ to mediatek/jpeg/ date: 11 months ago config: hexagon-randconfig-r041-20230224 (https://download.01.org/0day-ci/archive/20230224/202302241258.Q3rgDf4M-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f) 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2023a99811110aebba9eee4aa09ef7bd21a8a249 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 2023a99811110aebba9eee4aa09ef7bd21a8a249 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/media/platform/mediatek/vcodec/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202302241258.Q3rgDf4M-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/media/platform/mediatek/vcodec/mtk_vcodec_fw_vpu.c:38:32: warning: cast from 'mtk_vcodec_ipi_handler' (aka 'void (*)(void *, unsigned int, void *)') to 'ipi_handler_t' (aka 'void (*)(const void *, unsigned int, void *)') converts to incompatible function type [-Wcast-function-type-strict] ipi_handler_t handler_const = (ipi_handler_t)handler; ^~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. vim +38 drivers/media/platform/mediatek/vcodec/mtk_vcodec_fw_vpu.c 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 27 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 28 static int mtk_vcodec_vpu_set_ipi_register(struct mtk_vcodec_fw *fw, int id, 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 29 mtk_vcodec_ipi_handler handler, 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 30 const char *name, void *priv) 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 31 { 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 32 /* 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 33 * The handler we receive takes a void * as its first argument. We 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 34 * cannot change this because it needs to be passed down to the rproc 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 35 * subsystem when SCP is used. VPU takes a const argument, which is 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 36 * more constrained, so the conversion below is safe. 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 37 */ 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 @38 ipi_handler_t handler_const = (ipi_handler_t)handler; 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 39 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 40 return vpu_ipi_register(fw->pdev, id, handler_const, name, priv); 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 41 } 46233e91fa24a9 drivers/media/platform/mtk-vcodec/mtk_vcodec_fw_vpu.c Alexandre Courbot 2020-10-13 42 :::::: The code at line 38 was first introduced by commit :::::: 46233e91fa24a91bffca0680b1c55282ba601918 media: mtk-vcodec: move firmware implementations into their own files :::::: TO: Alexandre Courbot <acourbot@xxxxxxxxxxxx> :::::: CC: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
