Hi Jason-JH.Lin, kernel test robot noticed the following build errors: [auto build test ERROR on drm/drm-next] [also build test ERROR on linus/master next-20240927] [cannot apply to v6.11] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Jason-JH-Lin/drm-mediatek-ovl-Add-blend_modes-to-driver-data/20240926-163734 base: git://anongit.freedesktop.org/drm/drm drm-next patch link: https://lore.kernel.org/r/20240926083526.24629-3-jason-jh.lin%40mediatek.com patch subject: [PATCH v6 2/2] drm/mediatek: Add blend_modes to mtk_plane_init() for different SoCs config: arm-randconfig-002-20240929 (https://download.01.org/0day-ci/archive/20240929/202409290616.inw9UGyc-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240929/202409290616.inw9UGyc-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202409290616.inw9UGyc-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/mediatek/mtk_crtc.h:10, from drivers/gpu/drm/mediatek/mtk_ethdr.c:18: drivers/gpu/drm/mediatek/mtk_ddp_comp.h:83:9: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 83 | const u32 (*get_blend_modes)(struct device *dev); | ^~~~~ drivers/gpu/drm/mediatek/mtk_ddp_comp.h:271:1: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 271 | const u32 mtk_ddp_comp_get_blend_modes(struct mtk_ddp_comp *comp) | ^~~~~ In file included from drivers/gpu/drm/mediatek/mtk_ethdr.c:21: >> drivers/gpu/drm/mediatek/mtk_ethdr.h:16:1: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 16 | const u32 mtk_ethdr_get_blend_modes(struct device *dev); | ^~~~~ >> drivers/gpu/drm/mediatek/mtk_ethdr.c:148:1: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 148 | const u32 mtk_ethdr_get_blend_modes(struct device *dev) | ^~~~~ cc1: all warnings being treated as errors -- In file included from drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c:20: drivers/gpu/drm/mediatek/mtk_ddp_comp.h:83:9: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 83 | const u32 (*get_blend_modes)(struct device *dev); | ^~~~~ drivers/gpu/drm/mediatek/mtk_ddp_comp.h:271:1: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 271 | const u32 mtk_ddp_comp_get_blend_modes(struct mtk_ddp_comp *comp) | ^~~~~ In file included from drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c:21: drivers/gpu/drm/mediatek/mtk_disp_drv.h:106:1: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 106 | const u32 mtk_ovl_get_blend_modes(struct device *dev); | ^~~~~ drivers/gpu/drm/mediatek/mtk_disp_drv.h:135:1: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 135 | const u32 mtk_ovl_adaptor_get_blend_modes(struct device *dev); | ^~~~~ In file included from drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c:23: >> drivers/gpu/drm/mediatek/mtk_ethdr.h:16:1: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 16 | const u32 mtk_ethdr_get_blend_modes(struct device *dev); | ^~~~~ drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c:403:1: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers] 403 | const u32 mtk_ovl_adaptor_get_blend_modes(struct device *dev) | ^~~~~ cc1: all warnings being treated as errors vim +16 drivers/gpu/drm/mediatek/mtk_ethdr.h 8 9 void mtk_ethdr_start(struct device *dev); 10 void mtk_ethdr_stop(struct device *dev); 11 int mtk_ethdr_clk_enable(struct device *dev); 12 void mtk_ethdr_clk_disable(struct device *dev); 13 void mtk_ethdr_config(struct device *dev, unsigned int w, 14 unsigned int h, unsigned int vrefresh, 15 unsigned int bpc, struct cmdq_pkt *cmdq_pkt); > 16 const u32 mtk_ethdr_get_blend_modes(struct device *dev); -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki