Hi Stephen, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: cb690f5238d71f543f4ce874aa59237cf53a877c commit: ade896460e4a62f5e4a892a98d254937f6f5b64c drm: DRM_KMB_DISPLAY should depend on ARCH_KEEMBAY date: 1 year ago config: riscv-randconfig-s032-20211109 (attached as .config) compiler: riscv32-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout ade896460e4a62f5e4a892a98d254937f6f5b64c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/kernel/ drivers/clk/qcom/ drivers/clocksource/ drivers/firmware/arm_scmi/ drivers/firmware/efi/test/ drivers/gpu/drm/kmb/ drivers/mmc/host/ drivers/mtd/nand/onenand/ drivers/mtd/nand/raw/ drivers/pci/endpoint/functions/ drivers/phy/marvell/ drivers/pwm/ drivers/soc/bcm/bcm63xx/ drivers/staging/vc04_services/ drivers/uio/ drivers/usb/gadget/function/ drivers/video/fbdev/ fs/ kernel/ lib/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) -- drivers/gpu/drm/kmb/kmb_drv.c:102:31: sparse: expected void [noderef] __iomem * drivers/gpu/drm/kmb/kmb_drv.c:102:31: sparse: got void * vim +/layer_irqs +21 drivers/gpu/drm/kmb/kmb_plane.c 7f7b96a8a0a185 Anitha Chrisanthus 2020-11-04 20 7f7b96a8a0a185 Anitha Chrisanthus 2020-11-04 @21 const u32 layer_irqs[] = { 7f7b96a8a0a185 Anitha Chrisanthus 2020-11-04 22 LCD_INT_VL0, 7f7b96a8a0a185 Anitha Chrisanthus 2020-11-04 23 LCD_INT_VL1, 7f7b96a8a0a185 Anitha Chrisanthus 2020-11-04 24 LCD_INT_GL0, 7f7b96a8a0a185 Anitha Chrisanthus 2020-11-04 25 LCD_INT_GL1 7f7b96a8a0a185 Anitha Chrisanthus 2020-11-04 26 }; 7f7b96a8a0a185 Anitha Chrisanthus 2020-11-04 27 :::::: The code at line 21 was first introduced by commit :::::: 7f7b96a8a0a185ad8b15ee1cf042f75aa1430c30 drm/kmb: Add support for KeemBay Display :::::: TO: Anitha Chrisanthus <anitha.chrisanthus(a)intel.com&gt; :::::: CC: Sam Ravnborg <sam(a)ravnborg.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org