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From: David Brownell <david-b@pacbell.net>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Pierre Ossman <drzeus-mmc@drzeus.cx>,
	lkml <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
	Russell King <rmk@arm.linux.org.uk>,
	Nicolas Ferre <nicolas.ferre@rfo.atmel.com>,
	Andrew Victor <linux@maxim.org.za>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [patch 2.6.28-rc2] at91_mci: workaround lockdep
Date: Wed, 29 Oct 2008 00:20:03 -0700	[thread overview]
Message-ID: <200810290020.03953.david-b@pacbell.net> (raw)
In-Reply-To: <200810281022.42803.david-b@pacbell.net>

On Tuesday 28 October 2008, David Brownell wrote:
> 
> > > Workaround: depend on LOCKDEP=n ...

Note that LOCKDEP causes the BUG() on line 1159 of drivers/mmc/host/omap.c
to fire too -- exactly the same root cause:  IRQ handler getting called
in a goofy context, because of lockdep.

That's the older OMAP1/OMAP2 driver ... the new highspeed MMC controller
in OMAP3 (handling 8-bit parallel I/O etc, nyet in mainline) doesn't seem
to have the same issue(s).

- Dave




  parent reply	other threads:[~2008-10-29  7:20 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-27 21:26 David Brownell
2008-10-28 17:04 ` Peter Zijlstra
2008-10-28 17:22   ` David Brownell
2008-10-28 17:36     ` Peter Zijlstra
2008-10-28 19:41       ` David Brownell
2008-10-29  7:20     ` David Brownell [this message]
2008-11-03 13:47     ` Nicolas Ferre
2008-11-17  9:28 ` Nicolas Ferre
2008-11-19 18:45   ` Pierre Ossman
2008-11-20 15:02     ` Nicolas Ferre
2008-11-20 15:42       ` Pierre Ossman
2008-11-23 14:26   ` Peter Zijlstra

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