01.06.2015 17:19, Jacek Anaszewski пишет: >> In fact, the things are more complicated: some drivers do small >> udelay()'s but do not use a work-queue. I was not marking them as >> FAST, although perhaps they could still be marked as SYNC? > This could be handled by adding a property to struct led_classdev > for defining minimum acceptable delay. Then FAST flag should not > be needed. Oh c'mon, that's too difficult! Lets just have a flag whether we can do an SW PWM from hrtimer irq callback. If we can't do from irq callback - simply do not do anything below 10mS. IMHO a simple and practical solution. Otherwise we'll not have anything implemented at all I guess. -- To unsubscribe from this list: send the line "unsubscribe linux-leds" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html