linux-kernel - Re: [PATCH] rtc: fix deadlock

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Message-ID: <20080823171139.GA13144@elte.hu>
Date:	Sat, 23 Aug 2008 19:11:39 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Mikael Pettersson <mikpe@...uu.se>
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	tglx@...utronix.de, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] rtc: fix deadlock


* Mikael Pettersson <mikpe@...uu.se> wrote:

> Thanks for the patch, I'll give it a try ASAP.
> 
> The sporadic nature of the bug means that it will probably take a 
> couple of days of testing and dozens of reboots w/o problems before 
> I'm confident to say that the problem's been fixed.

btw., i've seen that lockup too on a testbox - but havent been able to 
track it down yet. You went further and presented the bug on a plate by 
tracking it down to the loop in get_rtc_time() - so now we can both test 
the fix and see whether the lockups are gone.

	Ingo
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