RE: [PATCH v2] drm: rcar-du: track dma-buf fences

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Hi Laurent,

(snip)

> > I will send a new patch with these changes after I tested it. Is it possible
> > that improved patch lands on 4.17 and 4.14 stable versions? What is the
> > process to propose a patch to a stable release ?
> 
> The process is pretty simple, it's documented in
> Documentation/process/stable-
> kernel-rules.rst. The file states the following requirement for a patch to be
> eligible for stable backporting:
> 
>  - It must fix a problem that causes a build error (but not for things
>    marked CONFIG_BROKEN), an oops, a hang, data corruption, a real
>    security issue, or some "oh, that's not good" issue.  In short, something
>    critical
> 
> I'll let you decide whether this patch qualifies, as it could be argued that
> it implements a new feature.
> 
> --
> Regards,
> 
> Laurent Pinchart
> 
>
IMHO, it is not a new feature, but It is a bug. Because explicit fencing is a recent kernel feature.
As Daniel Vetter stated, most X and wayland setups still rely on implicit fencing.

Anyway this patch must be integrated first to Linus' tree, before I can propose to the stable release.
It would be great if it can be part of 4.17.

Best Regards,

Emre Ucan

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