tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 455e73a07f6e288b0061dfcf4fcf54fa9fe06458 commit: 57cbdbe65e5f9ba9bfd67b66bc3ce24ef1c54643 drm/nouveau/kms/nv140-: Use hard-coded wndws or core channel for CRC channel date: 9 weeks ago config: sparc64-randconfig-s032-20220113 (https://download.01.org/0day-ci/archive/20220114/202201140142.b2CYChpW-lk...) compiler: sparc64-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 57cbdbe65e5f9ba9bfd67b66bc3ce24ef1c54643 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc64 SHELL=/bin/bash drivers/gpu/drm/ 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/nouveau/dispnv50/crcc57d.c:41:17: sparse: sparse: cast removes address space '__iomem' of expression drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:41:17: sparse: sparse: cast removes address space '__iomem' of expression drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:43:17: sparse: sparse: cast removes address space '__iomem' of expression drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:43:17: sparse: sparse: cast removes address space '__iomem' of expression drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:44:17: sparse: sparse: cast removes address space '__iomem' of expression drivers/gpu/drm/nouveau/dispnv50/crcc57d.c:44:17: sparse: sparse: cast removes address space '__iomem' of expression vim +/__iomem +40 drivers/gpu/drm/nouveau/dispnv50/crcc57d.c 12 13 static int crcc57d_set_src(struct nv50_head *head, int or, enum nv50_crc_source_type source, 14 struct nv50_crc_notifier_ctx *ctx) 15 { 16 struct nvif_push *push = nv50_disp(head->base.base.dev)->core->chan.push; 17 const int i = head->base.index; 18 u32 crc_args = NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, CONTROLLING_CHANNEL, CORE) | 19 NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, EXPECT_BUFFER_COLLAPSE, FALSE) | 20 NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, SECONDARY_CRC, NONE) | 21 NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, CRC_DURING_SNOOZE, DISABLE); 22 int ret; 23 24 switch (source) { 25 case NV50_CRC_SOURCE_TYPE_SOR: 26 crc_args |= NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, PRIMARY_CRC, SOR(or)); 27 break; 28 case NV50_CRC_SOURCE_TYPE_SF: 29 crc_args |= NVDEF(NVC57D, HEAD_SET_CRC_CONTROL, PRIMARY_CRC, SF); 30 break; 31 default: 32 break; 33 } 34 35 ret = PUSH_WAIT(push, 4); 36 if (ret) 37 return ret; 38 39 if (source) { 41 PUSH_MTHD(push, NVC57D, HEAD_SET_CRC_CONTROL(i), crc_args); 42 } else { 43 PUSH_MTHD(push, NVC57D, HEAD_SET_CRC_CONTROL(i), 0); 44 PUSH_MTHD(push, NVC57D, HEAD_SET_CONTEXT_DMA_CRC(i), 0); 45 } 46 47 return 0; 48 } 49 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org