Hi Stefan, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on rafael-pm/linux-next] [also build test WARNING on broonie-sound/for-next linus/master v5.19-rc4 next-20220627] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Stefan-Binding/Read-_SUB-from-ACPI-to-be-able-to-identify-firmware/20220627-235448 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: x86_64-rhel-8.3-syz (https://download.01.org/0day-ci/archive/20220628/202206280813.F9ukvWAK-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/7dd124b65442fd6622e7df2949795f735d8356be git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Stefan-Binding/Read-_SUB-from-ACPI-to-be-able-to-identify-firmware/20220627-235448 git checkout 7dd124b65442fd6622e7df2949795f735d8356be # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/acpi/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from drivers/acpi/utils.c:17: drivers/acpi/utils.c: In function 'acpi_get_subsystem_id': >> drivers/acpi/utils.c:317:49: warning: format '%d' expects argument of type 'int', but argument 4 has type '__kernel_size_t' {aka 'long unsigned int'} [-Wformat=] 317 | acpi_handle_err(handle, "ACPI _SUB Length %d is Invalid\n", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/acpi.h:1172:46: note: in definition of macro 'acpi_handle_err' 1172 | acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__) | ^~~ drivers/acpi/utils.c:317:68: note: format string is defined here 317 | acpi_handle_err(handle, "ACPI _SUB Length %d is Invalid\n", | ~^ | | | int | %ld vim +317 drivers/acpi/utils.c 295 296 const char *acpi_get_subsystem_id(acpi_handle handle) 297 { 298 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 299 union acpi_object *obj; 300 acpi_status status; 301 const char *sub; 302 303 status = acpi_evaluate_object(handle, METHOD_NAME__SUB, NULL, &buffer); 304 if (ACPI_FAILURE(status)) { 305 acpi_handle_debug(handle, "Reading ACPI _SUB failed: %#x\n", status); 306 return ERR_PTR(-ENODATA); 307 } 308 309 obj = buffer.pointer; 310 if (obj->type == ACPI_TYPE_STRING) { 311 if (strlen(obj->string.pointer) < ACPI_MAX_SUB_BUF_SIZE && 312 strlen(obj->string.pointer) > 0) { 313 sub = kstrdup(obj->string.pointer, GFP_KERNEL); 314 if (!sub) 315 sub = ERR_PTR(-ENOMEM); 316 } else { > 317 acpi_handle_err(handle, "ACPI _SUB Length %d is Invalid\n", 318 strlen(obj->string.pointer)); 319 sub = ERR_PTR(-EINVAL); 320 } 321 } else { 322 acpi_handle_warn(handle, "Warning ACPI _SUB did not return a string\n"); 323 sub = ERR_PTR(-EINVAL); 324 } 325 326 acpi_os_free(buffer.pointer); 327 328 return sub; 329 } 330 EXPORT_SYMBOL_GPL(acpi_get_subsystem_id); 331 -- 0-DAY CI Kernel Test Service https://01.org/lkp
