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Question asked by Rayson Rayson on Jun 6, 2015
Latest reply on Jun 8, 2015 by jimmychan

Hi everyone:

     On imx6 sdq, I found pwm_backlight_update_status was called and the pwm was disabled ,


In function pwm_backlight_update_status()(drivers/video/backlight/pwm_bl.)



  pwm_config(pb->pwm, 0, pb->period);






and then , I got the current process, it is kworker/1:2,  but I do not know how can the kworker trigger the pwm_backlight_update_status ???

Can anybody help me, thanks a lot .