Hi Raag, kernel test robot noticed the following build errors: [auto build test ERROR on groeck-staging/hwmon-next] [also build test ERROR on linus/master v6.11-rc3 next-20240812] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Raag-Jadav/drm-i915-hwmon-expose-fan-speed/20240812-161645 base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next patch link: https://lore.kernel.org/r/20240812081538.1457396-1-raag.jadav%40intel.com patch subject: [PATCH v5] drm/i915/hwmon: expose fan speed config: i386-randconfig-012-20240813 (https://download.01.org/0day-ci/archive/20240813/202408130500.SgCVoR2D-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240813/202408130500.SgCVoR2D-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408130500.SgCVoR2D-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): ld: drivers/gpu/drm/i915/i915_hwmon.o: in function `hwm_fan_read': >> drivers/gpu/drm/i915/i915_hwmon.c:675: undefined reference to `__udivdi3' vim +675 drivers/gpu/drm/i915/i915_hwmon.c 633 634 static int 635 hwm_fan_read(struct hwm_drvdata *ddat, u32 attr, long *val) 636 { 637 struct i915_hwmon *hwmon = ddat->hwmon; 638 struct hwm_fan_info *fi = &ddat->fi; 639 u64 rotations, time_now, time; 640 intel_wakeref_t wakeref; 641 u32 reg_val, pulses; 642 int ret = 0; 643 644 if (attr != hwmon_fan_input) 645 return -EOPNOTSUPP; 646 647 wakeref = intel_runtime_pm_get(ddat->uncore->rpm); 648 mutex_lock(&hwmon->hwmon_lock); 649 650 reg_val = intel_uncore_read(ddat->uncore, hwmon->rg.fan_speed); 651 time_now = get_jiffies_64(); 652 653 /* Handle HW register overflow */ 654 if (reg_val >= fi->reg_val_prev) 655 pulses = reg_val - fi->reg_val_prev; 656 else 657 pulses = UINT_MAX - fi->reg_val_prev + reg_val; 658 659 /* 660 * HW register value is accumulated count of pulses from 661 * PWM fan with the scale of 2 pulses per rotation. 662 */ 663 rotations = pulses / 2; 664 665 time = jiffies_delta_to_msecs(time_now - fi->time_prev); 666 if (unlikely(!time)) { 667 ret = -EAGAIN; 668 goto exit; 669 } 670 671 /* 672 * Convert to minutes for calculating RPM. 673 * RPM = number of rotations * msecs per minute / time in msecs 674 */ > 675 *val = DIV_ROUND_UP(rotations * (MSEC_PER_SEC * 60), time); 676 677 fi->reg_val_prev = reg_val; 678 fi->time_prev = time_now; 679 exit: 680 mutex_unlock(&hwmon->hwmon_lock); 681 intel_runtime_pm_put(ddat->uncore->rpm, wakeref); 682 return ret; 683 } 684 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
