Hi Uwe, kernel test robot noticed the following build errors: [auto build test ERROR on 8fff9184d1b5810dca5dd1a02726d4f844af88fc] url: https://github.com/intel-lab-lkp/linux/commits/Uwe-Kleine-K-nig/backlight-pwm_bl-Disable-PWM-on-shutdown-and-suspend/20230926-230323 base: 8fff9184d1b5810dca5dd1a02726d4f844af88fc patch link: https://lore.kernel.org/r/20230926150116.2124384-1-u.kleine-koenig%40pengutronix.de patch subject: [PATCH v3] backlight: pwm_bl: Disable PWM on shutdown and suspend config: mips-allmodconfig (https://download.01.org/0day-ci/archive/20230930/202309301206.OT7dbPq7-lkp@xxxxxxxxx/config) compiler: mips-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230930/202309301206.OT7dbPq7-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/202309301206.OT7dbPq7-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): drivers/video/backlight/pwm_bl.c: In function 'pwm_backlight_remove': >> drivers/video/backlight/pwm_bl.c:632:33: error: 'state' undeclared (first use in this function); did you mean 'statx'? 632 | pwm_get_state(pb->pwm, &state); | ^~~~~ | statx drivers/video/backlight/pwm_bl.c:632:33: note: each undeclared identifier is reported only once for each function it appears in vim +632 drivers/video/backlight/pwm_bl.c 624 625 static void pwm_backlight_remove(struct platform_device *pdev) 626 { 627 struct backlight_device *bl = platform_get_drvdata(pdev); 628 struct pwm_bl_data *pb = bl_get_data(bl); 629 630 backlight_device_unregister(bl); 631 pwm_backlight_power_off(pb); > 632 pwm_get_state(pb->pwm, &state); 633 state.duty_cycle = 0; 634 state.enabled = false; 635 pwm_apply_state(pb->pwm, &state); 636 637 if (pb->exit) 638 pb->exit(&pdev->dev); 639 } 640 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki