Re: fsl-dcu not works on latest "drm-next"

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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
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