linux-kernel - Re: [PATCH 1/1 repost #1] DRM: don't enable irqs in locking

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Message-ID: <48A2984E.5050202@tungstengraphics.com>
Date:	Wed, 13 Aug 2008 10:16:14 +0200
From:	Thomas Hellström <thomas@...gstengraphics.com>
To:	Johannes Engel <jcnengel@...glemail.com>
CC:	dri-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1 repost #1] DRM: don't enable irqs in locking

Johannes Engel wrote:
> Thomas Hellström wrote:
>> Yes, this bug could occur, but the remedy is not to use 
>> spin_lock_irqsave() for lock_data::spinlock but to avoid calling 
>> drm_lock_take with the drm_device::tasklet_lock held with irqs disabled.
>> I'll see if I can come up with a patch.
> Hi Thomas,
>
> any news on that so far?
>
> Cheers, Johannes
Hi!
Been on vacation.

Pls try the attached patch.

/Thomas


View attachment "0001-Don-t-call-the-vblank-tasklet-with-irqs-disabled.patch" of type "text/plain" (2776 bytes)