tree: https://github.com/avpatel/linux.git riscv_sbi_hsm_suspend_v4 head: 918900c33e104747fc2e9249207eabc8154391db commit: 8a283d8787dc0258a59acdf51f40f44d381de2ce [8/10] cpuidle: Add RISC-V SBI CPU idle driver config: riscv-randconfig-r004-20210523 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project e84a9b9bb3051c35dea993cdad7b3d2575638f85) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/avpatel/linux/commit/8a283d8787dc0258a59acdf51f40f44d3... git remote add avpatel https://github.com/avpatel/linux.git git fetch --no-tags avpatel riscv_sbi_hsm_suspend_v4 git checkout 8a283d8787dc0258a59acdf51f40f44d381de2ce # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 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 >>): In file included from drivers/cpuidle/cpuidle-sbi.c:27: drivers/cpuidle/dt_idle_genpd.h:29:1: error: expected identifier or '(' { ^ drivers/cpuidle/cpuidle-sbi.c:348:5: error: implicit declaration of function 'cpuid_to_hartid_map' [-Werror,-Wimplicit-function-declaration] cpuid_to_hartid_map(cpu)); ^ cpuid_to_hartid_map(cpu)); ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/printk.h:430:38: note: expanded from macro 'pr_debug' no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/printk.h:140:17: note: expanded from macro 'no_printk' printk(fmt, ##__VA_ARGS__); \ ~~~ ^~~~~~~~~~~ drivers/cpuidle/cpuidle-sbi.c:357:10: error: implicit declaration of function 'cpuid_to_hartid_map' [-Werror,-Wimplicit-function-declaration] cpuid_to_hartid_map(cpu)); ^ drivers/cpuidle/cpuidle-sbi.c:357:10: warning: format specifies type 'long' but the argument has type 'int' [-Wformat] cpuid_to_hartid_map(cpu)); ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/printk.h:343:33: note: expanded from macro 'pr_err' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ drivers/cpuidle/cpuidle-sbi.c:565:6: error: implicit declaration of function 'cpuid_to_hartid_map' [-Werror,-Wimplicit-function-declaration] cpuid_to_hartid_map(cpu)); ^ drivers/cpuidle/cpuidle-sbi.c:565:6: warning: format specifies type 'long' but the argument has type 'int' [-Wformat] cpuid_to_hartid_map(cpu)); ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/printk.h:430:38: note: expanded from macro 'pr_debug' no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/printk.h:140:17: note: expanded from macro 'no_printk' printk(fmt, ##__VA_ARGS__); \ ~~~ ^~~~~~~~~~~ 3 warnings and 4 errors generated. vim +348 drivers/cpuidle/cpuidle-sbi.c 315 316 static int sbi_cpuidle_init_cpu(struct device *dev, int cpu) 317 { 318 struct cpuidle_driver *drv; 319 unsigned int state_count = 0; 320 int ret = 0; 321 322 drv = devm_kzalloc(dev, sizeof(*drv), GFP_KERNEL); 323 if (!drv) 324 return -ENOMEM; 325 326 drv->name = "sbi_cpuidle"; 327 drv->owner = THIS_MODULE; 328 drv->cpumask = (struct cpumask *)cpumask_of(cpu); 329 330 /* RISC-V architectural WFI to be represented as state index 0. */ 331 drv->states[0].enter = sbi_cpuidle_enter_state; 332 drv->states[0].exit_latency = 1; 333 drv->states[0].target_residency = 1; 334 drv->states[0].power_usage = UINT_MAX; 335 strcpy(drv->states[0].name, "WFI"); 336 strcpy(drv->states[0].desc, "RISC-V WFI"); 337 338 /* 339 * If no DT idle states are detected (ret == 0) let the driver 340 * initialization fail accordingly since there is no reason to 341 * initialize the idle driver if only wfi is supported, the 342 * default archictectural back-end already executes wfi 343 * on idle entry. 344 */ 345 ret = dt_init_idle_driver(drv, sbi_cpuidle_state_match, 1); 346 if (ret <= 0) { 347 pr_debug("HART%ld: failed to parse DT idle states\n", 349 return ret ? : -ENODEV; 350 } 351 state_count = ret + 1; /* Include WFI state as well */ 352 353 /* Initialize idle states from DT. */ 354 ret = sbi_cpuidle_dt_init_states(dev, drv, cpu, state_count); 355 if (ret) { 356 pr_err("HART%ld: failed to init idle states\n", 357 cpuid_to_hartid_map(cpu)); 358 return ret; 359 } 360 361 ret = cpuidle_register(drv, NULL); 362 if (ret) 363 goto deinit; 364 365 cpuidle_cooling_register(drv); 366 367 return 0; 368 deinit: 369 sbi_cpuidle_deinit_cpu(cpu); 370 return ret; 371 } 372 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org