Hi Armin, Thank you for the patch! Yet something to improve: [auto build test ERROR on groeck-staging/hwmon-next] [also build test ERROR on next-20220215] [cannot apply to linus/master v5.17-rc4] [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/0day-ci/linux/commits/Armin-Wolf/hwmon-dell-smm-Miscellaneous-improvements/20220216-031722 base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next config: i386-randconfig-a004-20220214 (https://download.01.org/0day-ci/archive/20220216/202202160842.6EYIVsJn-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 37f422f4ac31c8b8041c6b62065263314282dab6) 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 # https://github.com/0day-ci/linux/commit/e03bd707be4885b219afdfd7a24778fb0a8129e1 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Armin-Wolf/hwmon-dell-smm-Miscellaneous-improvements/20220216-031722 git checkout e03bd707be4885b219afdfd7a24778fb0a8129e1 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/hwmon/dell-smm-hwmon.c:178:15: error: inline assembly requires more registers than available asm volatile("out %%al,$0xb2\n\t" ^ 1 error generated. vim +178 drivers/hwmon/dell-smm-hwmon.c 161 162 /* 163 * Call the System Management Mode BIOS. Code provided by Jonathan Buzzard. 164 */ 165 static int i8k_smm_func(void *par) 166 { 167 ktime_t calltime = ktime_get(); 168 struct smm_regs *regs = par; 169 int eax = regs->eax; 170 int ebx = regs->ebx; 171 long long duration; 172 int rc; 173 174 /* SMM requires CPU 0 */ 175 if (smp_processor_id() != 0) 176 return -EBUSY; 177 > 178 asm volatile("out %%al,$0xb2\n\t" 179 "out %%al,$0x84\n" 180 : "=a" (regs->eax), 181 "=b" (regs->ebx), 182 "=c" (regs->ecx), 183 "=d" (regs->edx), 184 "=S" (regs->esi), 185 "=D" (regs->edi), 186 CC_OUT(c) (rc) 187 : "a" (regs->eax), 188 "b" (regs->ebx), 189 "c" (regs->ecx), 190 "d" (regs->edx), 191 "S" (regs->esi), 192 "D" (regs->edi)); 193 194 if (rc != 0 || (regs->eax & 0xffff) == 0xffff || regs->eax == eax) 195 rc = -EINVAL; 196 197 duration = ktime_us_delta(ktime_get(), calltime); 198 pr_debug("smm(0x%.4x 0x%.4x) = 0x%.4x (took %7lld usecs)\n", eax, ebx, 199 (rc ? 0xffff : regs->eax & 0xffff), duration); 200 201 return rc; 202 } 203 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
