[PATCH 00/13] DRM Reliable Minor-IDs

[Thierry Reding]

On Wed, Jan 29, 2014 at 03:01:47PM +0100, David Herrmann wrote:
> Hi
> 
> I was looking into our minor-allocation code and it has one major drawback:
> char-dev minor-IDs are unreliable. The <id>+128 hacks we use in user-space to
> calculate render-node IDs based on the original card just does not work.
> 
> Instead of allocating dummy IDs for each driver, I went ahead and tried to fix
> it properly. So this series changes the minor-ID management to just allocate a
> single dev->minor_base ID instead of one ID per "drm_minor". Now we can use this
> base to calculate the correct offset minor-ID for each existing DRM-minor.
> 
> While at it, I introduced drm-refcounts to make minor-lookup independent of
> drm_global_mutex. This is still not finished (and dev->open_count still exists)
> but I already have the next patches waiting here.
> 
> Comments welcome!
> 
> Branch is also available here:
>   http://cgit.freedesktop.org/~dvdhrm/linux/log/?h=minor
> If someone could pull this into their tree and push to Fengguang's
> test-framework, I'd appreciate it a lot! I'm still waiting for a reply from him.

The series:

Tested-by: Thierry Reding <treding at nvidia.com>
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