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From: Stefan Agner <stefan@agner.ch>
To: Mark Brown <broonie@kernel.org>,
	Alexander Stein <alexander.stein@systec-electronic.com>
Cc: linux-kernel@vger.kernel.org, Meng Yi <meng.yi@nxp.com>,
	dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>,
	airlied@redhat.com
Subject: Re: fsl-dcu not works on latest "drm-next"
Date: Fri, 27 May 2016 10:36:21 -0700	[thread overview]
Message-ID: <40626c17a4e8960d20bfa07c59892bfa@agner.ch> (raw)
In-Reply-To: <20160527122010.GH16172@sirena.org.uk>

On 2016-05-27 05:20, Mark Brown wrote:
> On Thu, May 26, 2016 at 10:54:16PM -0700, Stefan Agner wrote:
>> On 2016-05-26 02:11, Alexander Stein wrote:
> 
>> > This needs to be a flat cache. See
>> > https://lists.freedesktop.org/archives/dri-devel/2016-January/099121.html
>> > or https://lkml.org/lkml/2016/3/24/281
>> > max_register also needs an appropriate value.
> 
>> FWIW, the latest patch which addresses this issue is Patch 5/6 of this
>> patchset:
>> https://lkml.org/lkml/2016/4/19/617
> 
>> Unfortunately, that patchset missed the 4.7 merge window. I still miss
>> an Ack for the first patch of this patchset. But should go into the next
>> release...
> 
> That's another way of addressing it of course, but unless the register
> map actually is sparse it's probably still sensible to send the
> conversion to flat cache as a fix.

The regcache is used for suspend, but the suspend implementation in its
current form is not in not working. Hence I felt it is not worth fixing
part of something which is broken as a whole anyway.

So far I was under the impression the "only" issue using REGCACHE_RBTREE
is that it triggers a warning when enabling lockdep. 

@Alexander, is using REGCACHE_RBTREE an actual problem for the issue
Meng Yi has here?

--
Stefan

  reply	other threads:[~2016-05-27 17:40 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <HE1PR04MB105158F9CB2CEC73E6B5F5E9EC7A0@HE1PR04MB1051.eurprd04.prod.outlook.com>
2016-05-25  2:14 ` fsl-dcu not works on latest "drm-next" Meng Yi
2016-05-25  6:20   ` Stefan Agner
2016-05-25  8:32     ` Alexander Stein
2016-05-25  8:58       ` Meng Yi
2016-05-25  9:57         ` Alexander Stein
2016-05-25 10:25           ` Meng Yi
2016-05-25 12:16             ` Alexander Stein
2016-05-26  8:18               ` Meng Yi
2016-05-26  9:11                 ` Alexander Stein
2016-05-25  9:18   ` Mark Brown
2016-05-25  9:59     ` Meng Yi
2016-05-25 10:41       ` Mark Brown
2016-05-26  8:23         ` Meng Yi
2016-05-26  9:11           ` Alexander Stein
2016-05-27  5:54             ` Stefan Agner
2016-05-27 12:20               ` Mark Brown
2016-05-27 17:36                 ` Stefan Agner [this message]
2016-05-27 19:50                   ` Mark Brown
2016-06-03 22:52             ` Stefan Agner
2016-06-07  2:16               ` Meng Yi
2016-06-07  2:46                 ` Stefan Agner
2016-06-07  3:47               ` Meng Yi

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