[PATCH] drm/exynos: fix plane-framebuffer linkage

[Daniel Vetter]

On Wed, Sep 17, 2014 at 6:41 PM, Daniel Drake <drake at endlessm.com> wrote:
> However there is *another* fb reference taken in
> omap_plane_mode_set(). And my patch is modelled to do the same in
> exynos-drm.

This is because omapdrm does _everything_ asynchrously, even plain
modesets. Unfortunately that async modeset support is broken, so the
latest omapdrm patches insert a synchronization point.

So picking omap's mode_set logic as a reference because it also does
fb refcounting is not a good idea - that code does something crazy and
gets it wrong. And really, if you do modeset synchronously the drm
core will take care of your refcounting needs.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch