[PATCH] DDX/Randr: Avoid server crash when xrandr SetConfig is called while switched away

[Keith Packard]

Egbert Eich <eich at freedesktop.org> writes:

> A call to Xrandr SetScreenConfig (for randr 1.1) causes the Xserver to
> crash when xf86SetViewport() which does not check if the hardware is
> accessible.
> Wrap accesses to xf86SetViewport() with if (vtSema) { ... } to avoid
> that.

Reviewed-by: Keith Packard <keithp at keithp.com>

-- 
keith.packard at intel.com
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