netdev - Re: [PATCH] zd1211rw-d80211: Use LED class

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Date:	Wed, 13 Dec 2006 18:37:37 -0500
From:	Michael Wu <flamingice@...rmilk.net>
To:	Ulrich Kunitz <kune@...ne-taler.de>
Cc:	Daniel Drake <dsd@...too.org>, netdev@...r.kernel.org,
	Johannes Berg <johannes@...solutions.net>
Subject: Re: [PATCH] zd1211rw-d80211: Use LED class

On Wednesday 13 December 2006 17:54, Ulrich Kunitz wrote:
> I mean on the other hands we break APIs for four or 
> eight bytes and here we spend a whole device strucuture and sysfs
> directory for something the wlan device firmware represents with a
> single bit. To call the housekeeping functions overkill under
> these circumstances appears not to be very rational.
>
I do not consider the housekeeping functions overkill, but the function that 
it performs (eg. not confusing the user by keeping the LED off) can be done 
with less brute force.

> It should also be mentioned that the LEDs on the ZD1211 devices
> are not independent devices, because they are partly controlled
> by the firmware. That's exactly where some of the issues with your
> patch are.
>
The link light can be treated as an independent device as long as the other 
LED bit is not flipped. As I mentioned before, fixing that isn't a problem.

> Let the device drivers do the blinking, but give them a chance to
> know about status changes at the MAC layer, without mandating to
> implement a LED device. 
I guess you don't like the LED trigger code currently in d80211 then and would 
rather see it removed. As far as I can tell, this patch is just a symptom of 
that issue.

-Michael Wu

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