Re: [PATCH v2 12/26] drm/exynos: Split manager/display/subdrv

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On Mon, Nov 4, 2013 at 5:10 AM, Thierry Reding <thierry.reding@xxxxxxxxx> wrote:
> On Tue, Oct 29, 2013 at 05:29:55PM -0400, Rob Clark wrote:
>> On Tue, Oct 29, 2013 at 4:50 PM, Tomasz Figa <tomasz.figa@xxxxxxxxx> wrote:
> [...]
>> > I believe this is a huge step backwards from current kernel design
>> > standards, which prefer modularity.
>>
>> But it makes things behave in the way that userspace expects, which is
>> more important.
>
> Why would userspace care about the modularity of kernel drivers? The
> only thing that userspace should care about is whether there's a DRM
> device or not. How the kernel makes that happen should be completely
> irrelevant to userspace.

What I was referring to was userspace not expecting parts of the drm
(crtcs/encoders/connectors) driver to show up incrementally. You can
avoid that, but it is more of a hassle currently (ie. most drivers
that need to do this, including a few that I've written, end up
needing some form of
stuff-devices-in-global-variables-that-main-driver-checks-for).

BR,
-R

> Thierry
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