linux-kernel - Re: apm emulation driver broken ?

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Date:	Sun, 18 Nov 2007 20:57:33 +0100
From:	Franck Bui-Huu <vagabon.xyz@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	linux-pm@...ts.linux-foundation.org,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: apm emulation driver broken ?

Rafael J. Wysocki wrote:
> On Saturday, 17 of November 2007, Franck Bui-Huu wrote:
>> ok so now we agreed on this point, can we assert that a user
>> land thread waiting for an event in an UNINTERRUPTIBLE state
>> will prevent a suspend to happen ?
> 
> Yes.
> 

So this driver seems really broken and actually I'm wondering if
it's used by anyone...

See the call to wait_even() made by apm_ioctl(). If any processes
run this, it will prevent the system to suspend...

And no, I don't know why call wait_event() is called.

		Franck
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