linux-kernel - Re: [PATCH 01/12] thinkpad_ec: New driver for ThinkPad embedded controller access

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Message-ID: <20060808093923.GD4245@elf.ucw.cz>
Date:	Tue, 8 Aug 2006 11:39:23 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	Shem Multinymous <multinymous@...il.com>
Cc:	Robert Love <rlove@...ve.org>, Jean Delvare <khali@...ux-fr.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org, hdaps-devel@...ts.sourceforge.net
Subject: Re: [PATCH 01/12] thinkpad_ec: New driver for ThinkPad embedded controller access

Hi!

> >Okay... but do we really need try_lock variant?
> 
> We need a nonlocking, nonsleeping variant to do the query in the timer
> function (softirq context).
> 
> >but what is try_lock semantics when taking multiple locks...?
> 
> Currently, the same as the undelying down_trylock().

Okay, I guess this works for me.

> >Well, this will also trigger for thinkpad module compiled into kernel,
> >right?
> 
> OK, I'm changing the DMI failure to KERN_WARNING. Subsequent hardware
> checks remains KERN_ERR, since failing those after passing the DMI
> check really is abnormal (and indicative of danger).

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