linux-kernel - Re: [PATCH] blink: Only blink when parameter is set

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Message-ID: <20070620201637.GA5610@ucw.cz>
Date:	Wed, 20 Jun 2007 20:16:38 +0000
From:	Pavel Machek <pavel@....cz>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...e.de>,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH] blink: Only blink when parameter is set

Hi!

> This patch in the blink driver changes the module to only blink when
> the parameter 'blink' is set to true. This is to allow the module to
> be compiled in the kernel and not as module.
> 
> As the blink module was initially written for kdump, and as the kernel
> is relocatable on lots of architectures, there's no need to compile a
> separate kdump kernel. The blinking can now enabled via the boot
> command line for the kdump kernel when necessary.
> 
> The patch also adds some author/license information and marks the init
> function as '__init'.
> 
> Signed-off-by: Bernhard Walle <bwalle@...e.de>

Patch looks good (and needed!) to me, but:

can we remove that driver, instead? 

* It breaks keyboards. Yes, we are
talking about maybe-broken i8042s, but it still breaks thinkpads at
least.

* It can be done in userspace. setleds +num; sleep 1; setleds -num <
/dev/tty1 does not seem like rocket science to me.

* if we want to do this, perhaps we should use proper led interface
(/sys/class/led) that can already auto-blink

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