Re: [PATCH] leds: avoid races with workqueue

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Hi!

> >>>+++ b/drivers/leds/led-class.c
> >>>@@ -57,6 +57,7 @@ static ssize_t brightness_store(struct device *dev,
> >>>  	if (state == LED_OFF)
> >>>  		led_trigger_remove(led_cdev);
> >>>  	led_set_brightness(led_cdev, state);
> >>>+	flush_work(&led_cdev->set_brightness_work);
> >>
> >>Is this really required here? It creates non-uniform brightness
> >>setting behavior depending on whether it is set from sysfs or
> >>by in-kernel call to led_set_brightness().
> >
> >This fixes the echo 0 > brightness; echo 1 > brightness. It has to be
> >at a place where we can sleep.
> >
> >If you have better idea, it is welcome, but it would be good to fix
> >the bug.
> 
> Currently not, so I applied the patch in this shape.

Thanks!

This is actually something that makes sense for stable.. perhaps the
bots can pick it up.
									Pavel


-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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