linux-kernel - Re: [PROBLEM] i915/drm: Insufficient FIFO for plane

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Date:	Sun, 29 Aug 2010 14:32:41 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	maciej.rutecki@...il.com
Cc:	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Chris Wilson <chris@...is-wilson.co.uk>, sitsofe@...oo.com,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PROBLEM] i915/drm: Insufficient FIFO for plane

On Thu, Aug 26, 2010 at 9:27 PM, Maciej Rutecki
<maciej.rutecki@...il.com> wrote:
> On niedziela, 22 sierpnia 2010 o 17:26:19 Pekka Enberg wrote:
>> Hi,
>>
>> I'm seeing tons of these error messages with current Linus' git:
>>
>> [   95.941618] [drm:intel_calculate_wm] *ERROR* Insufficient FIFO for
>> plane, expect flickering: entries required = 36, available = 31.
>>
>> Contrary to the error message, I don't see any flickering. I've attached
>> my dmesg and config.
>>
> See:
> https://bugzilla.kernel.org/show_bug.cgi?id=17021

The "insufficient FIFO for plane" problem seems to have gone away with
latest Linus' git. I suppose commit
9559fcdbff4f93d29af04478bbc48294519424f5 ("drm/i915: fix vblank wait
test condition") fixed it although I don't see any mention of the
error in the changelog?

                         Pekka
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