tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.10 head: fd02c3763b163e3228c744f68af7acada84b164a commit: c09db8d0cdc8a6b23b5243f23d879b1f602ec371 [11/21] FROMLIST: media: platform: mtk-mdp3: Add Mediatek MDP3 driver config: powerpc64-randconfig-r001-20210813 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 62df4df41c939205b2dc0a2a3bfb75b8c1ed74fa) 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 # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.10 git checkout c09db8d0cdc8a6b23b5243f23d879b1f602ec371 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): ^ arch/powerpc/include/asm/io.h:522:62: note: expanded from macro '__do_outl' #define __do_outl(val, port) writel(val,(PCI_IO_ADDR)_IO_BASE+port); ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c:9: In file included from include/linux/of_address.h:7: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:43:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insb, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:133:1: note: expanded from here __do_insb ^ arch/powerpc/include/asm/io.h:541:56: note: expanded from macro '__do_insb' #define __do_insb(p, b, n) readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c:9: In file included from include/linux/of_address.h:7: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:135:1: note: expanded from here __do_insw ^ arch/powerpc/include/asm/io.h:542:56: note: expanded from macro '__do_insw' #define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c:9: In file included from include/linux/of_address.h:7: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:137:1: note: expanded from here __do_insl ^ arch/powerpc/include/asm/io.h:543:56: note: expanded from macro '__do_insl' #define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c:9: In file included from include/linux/of_address.h:7: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:139:1: note: expanded from here __do_outsb ^ arch/powerpc/include/asm/io.h:544:58: note: expanded from macro '__do_outsb' #define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c:9: In file included from include/linux/of_address.h:7: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:141:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:545:58: note: expanded from macro '__do_outsw' #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c:9: In file included from include/linux/of_address.h:7: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:143:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:546:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ type = (enum mdp_comp_type)matches->data; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c:1282:6: warning: unused variable 'ret' [-Wunused-variable] int ret; ^ drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c:1368:10: warning: cast to smaller integer type 'enum mdp_comp_type' from 'const void *' [-Wvoid-pointer-to-enum-cast] type = (enum mdp_comp_type)of_id->data; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 15 warnings generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for MTK_SCP Depends on REMOTEPROC && (ARCH_MEDIATEK || COMPILE_TEST Selected by - VIDEO_MEDIATEK_MDP3 && MEDIA_SUPPORT && MEDIA_PLATFORM_SUPPORT && V4L_MEM2MEM_DRIVERS && MTK_IOMMU && VIDEO_DEV && VIDEO_V4L2 && (ARCH_MEDIATEK || COMPILE_TEST && HAS_DMA vim +1240 drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c 1222 1223 static int mdp_sub_comps_create(struct mdp_dev *mdp, struct device_node *node) 1224 { 1225 struct device *dev = &mdp->pdev->dev; 1226 struct property *prop; 1227 const char *name; 1228 int index = 0; 1229 1230 of_property_for_each_string(node, "mdp3-comps", prop, name) { 1231 const struct of_device_id *matches = mdp_sub_comp_dt_ids; 1232 enum mdp_comp_type type = MDP_COMP_NONE; 1233 u32 alias_id; 1234 int id, ret; 1235 struct mdp_comp *comp; 1236 1237 for (; matches->compatible[0]; matches++) { 1238 if (of_compat_cmp(name, matches->compatible, 1239 strlen(matches->compatible)) == 0) { 1241 break; 1242 } 1243 } 1244 1245 ret = of_property_read_u32_index(node, "mdp3-comp-ids", 1246 index, &alias_id); 1247 if (ret) { 1248 dev_warn(dev, "Skipping unknown component %s\n", name); 1249 return ret; 1250 } 1251 1252 id = mdp_comp_get_id(type, alias_id); 1253 if (id < 0) { 1254 dev_err(dev, "Failed to get component id: " 1255 "%s type %d, alias %d\n", name, type, alias_id); 1256 return -ENODEV; 1257 } 1258 1259 comp = mdp_comp_create(mdp, node, id); 1260 if (IS_ERR(comp)) 1261 return PTR_ERR(comp); 1262 1263 index++; 1264 } 1265 return 0; 1266 } 1267 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org