tree: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next head: 89e2fd3e750d33c697eff97a2c6804b735d1beb7 commit: 765f4122aee73587b62ad1c4e093d6d1d2468d75 [56/66] mfd: core: Make a best effort attempt to match devices with the correct of_nodes config: m68k-randconfig-r013-20200717 (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 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 git checkout 765f4122aee73587b62ad1c4e093d6d1d2468d75 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k 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/mfd/mfd-core.c: In function 'mfd_add_device': 216 | ret = mfd_match_of_node_to_dev(pdev, np, cell); | ^~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/mfd_match_of_node_to_dev +216 drivers/mfd/mfd-core.c 169 170 static int mfd_add_device(struct device *parent, int id, 171 const struct mfd_cell *cell, 172 struct resource *mem_base, 173 int irq_base, struct irq_domain *domain) 174 { 175 struct resource *res; 176 struct platform_device *pdev; 177 struct device_node *np = NULL; 178 struct mfd_of_node_entry *of_entry, *tmp; 179 int ret = -ENOMEM; 180 int platform_id; 181 int r; 182 183 if (id == PLATFORM_DEVID_AUTO) 184 platform_id = id; 185 else 186 platform_id = id + cell->id; 187 188 pdev = platform_device_alloc(cell->name, platform_id); 189 if (!pdev) 190 goto fail_alloc; 191 192 pdev->mfd_cell = kmemdup(cell, sizeof(*cell), GFP_KERNEL); 193 if (!pdev->mfd_cell) 194 goto fail_device; 195 196 res = kcalloc(cell->num_resources, sizeof(*res), GFP_KERNEL); 197 if (!res) 198 goto fail_device; 199 200 pdev->dev.parent = parent; 201 pdev->dev.type = &mfd_dev_type; 202 pdev->dev.dma_mask = parent->dma_mask; 203 pdev->dev.dma_parms = parent->dma_parms; 204 pdev->dev.coherent_dma_mask = parent->coherent_dma_mask; 205 206 ret = regulator_bulk_register_supply_alias( 207 &pdev->dev, cell->parent_supplies, 208 parent, cell->parent_supplies, 209 cell->num_parent_supplies); 210 if (ret < 0) 211 goto fail_res; 212 213 if (IS_ENABLED(CONFIG_OF) && parent->of_node && cell->of_compatible) { 214 for_each_child_of_node(parent->of_node, np) { 215 if (of_device_is_compatible(np, cell->of_compatible)) { 217 if (ret == -EAGAIN) 218 continue; 219 if (ret) 220 goto fail_alias; 221 222 break; 223 } 224 } 225 226 if (!pdev->dev.of_node) 227 pr_warn("%s: Failed to locate of_node [id: %d]\n", 228 cell->name, platform_id); 229 } 230 231 mfd_acpi_add_device(cell, pdev); 232 233 if (cell->pdata_size) { 234 ret = platform_device_add_data(pdev, 235 cell->platform_data, cell->pdata_size); 236 if (ret) 237 goto fail_of_entry; 238 } 239 240 if (cell->properties) { 241 ret = platform_device_add_properties(pdev, cell->properties); 242 if (ret) 243 goto fail_of_entry; 244 } 245 246 for (r = 0; r < cell->num_resources; r++) { 247 res[r].name = cell->resources[r].name; 248 res[r].flags = cell->resources[r].flags; 249 250 /* Find out base to use */ 251 if ((cell->resources[r].flags & IORESOURCE_MEM) && mem_base) { 252 res[r].parent = mem_base; 253 res[r].start = mem_base->start + 254 cell->resources[r].start; 255 res[r].end = mem_base->start + 256 cell->resources[r].end; 257 } else if (cell->resources[r].flags & IORESOURCE_IRQ) { 258 if (domain) { 259 /* Unable to create mappings for IRQ ranges. */ 260 WARN_ON(cell->resources[r].start != 261 cell->resources[r].end); 262 res[r].start = res[r].end = irq_create_mapping( 263 domain, cell->resources[r].start); 264 } else { 265 res[r].start = irq_base + 266 cell->resources[r].start; 267 res[r].end = irq_base + 268 cell->resources[r].end; 269 } 270 } else { 271 res[r].parent = cell->resources[r].parent; 272 res[r].start = cell->resources[r].start; 273 res[r].end = cell->resources[r].end; 274 } 275 276 if (!cell->ignore_resource_conflicts) { 277 if (has_acpi_companion(&pdev->dev)) { 278 ret = acpi_check_resource_conflict(&res[r]); 279 if (ret) 280 goto fail_of_entry; 281 } 282 } 283 } 284 285 ret = platform_device_add_resources(pdev, res, cell->num_resources); 286 if (ret) 287 goto fail_of_entry; 288 289 ret = platform_device_add(pdev); 290 if (ret) 291 goto fail_of_entry; 292 293 if (cell->pm_runtime_no_callbacks) 294 pm_runtime_no_callbacks(&pdev->dev); 295 296 kfree(res); 297 298 return 0; 299 300 fail_of_entry: 301 list_for_each_entry_safe(of_entry, tmp, &mfd_of_node_list, list) 302 if (of_entry->dev == &pdev->dev) { 303 list_del(&of_entry->list); 304 kfree(of_entry); 305 } 306 fail_alias: 307 regulator_bulk_unregister_supply_alias(&pdev->dev, 308 cell->parent_supplies, 309 cell->num_parent_supplies); 310 fail_res: 311 kfree(res); 312 fail_device: 313 platform_device_put(pdev); 314 fail_alloc: 315 return ret; 316 } 317 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org