Re: [PATCH/RFC v8 02/14] Documentation: leds: Add description of LED Flash class extension

From: Pavel Machek
Date: Mon Dec 01 2014 - 08:04:45 EST


> >How are faults cleared? Should it be list of strings, instead of
> >bitmask? We may want to add new fault modes in future...
> Faults are cleared by reading the attribute. I will add this note.
> There can be more than one fault at a time. I think that the bitmask
> is a flexible solution. I don't see any troubles related to adding
> new fault modes in the future, do you?

I do not think that "read attribute to clear" is good idea. Normally,
you'd want the error attribute world-readable, but you don't want
non-root users to clear the errors.

I am not sure if bitmask is good solution. I'd return space-separated
strings like "overtemp". That way, there's good chance that other LED
drivers would be able to use similar interface...

Best regards,
(cesky, pictures)
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at