[kbuild-all] [esmil:visionfive 64/80] drivers/gpu/drm/starfive/starfive_drm_vpp.c:602:9: error: implicit declaration of function 'sifive_l2_flush64_range'

tree: https://github.com/esmil/linux visionfive head: e46c3a7e373e6faa03399f1a41c29cf7546c37cb commit: 1eb3575230496368002bc06d59b7d219c09af47b [64/80] drm/starfive: Add StarFive drm driver config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220119/202201191349.mJZAPYfE-lk...) compiler: arceb-elf-gcc (GCC) 11.2.0 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/esmil/linux/commit/1eb3575230496368002bc06d59b7d219c09... git remote add esmil https://github.com/esmil/linux git fetch --no-tags esmil visionfive git checkout 1eb3575230496368002bc06d59b7d219c09af47b # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/gpu/drm/starfive/starfive_drm_vpp.c: In function 'vpp1_isr_handler': 602 | sifive_l2_flush64_range(sf_crtc->dma_addr, sf_crtc->size); | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/starfive/starfive_drm_vpp.c:598:13: warning: variable 'intr_status' set but not used [-Wunused-but-set-variable] 598 | u32 intr_status = 0; | ^~~~~~~~~~~ cc1: some warnings being treated as errors vim +/sifive_l2_flush64_range +602 drivers/gpu/drm/starfive/starfive_drm_vpp.c 594 595 irqreturn_t vpp1_isr_handler(int this_irq, void *dev_id) 596 { 597 struct starfive_crtc *sf_crtc = dev_id; 598 u32 intr_status = 0; 599 600 intr_status = sf_fb_vppread32(sf_crtc, 1, PP_INT_STATUS); 601 sf_fb_vppwrite32(sf_crtc, 1, PP_INT_CLR, 0xf); 603 604 return IRQ_HANDLED; 605 } 606 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org