[PATCH mach64] Don't play wrapping games

[Adam Jackson]

On Sun, 2010-08-29 at 18:13 +0200, Mark Kettenis wrote:
> The driver calls the wrapped CloseScreen function in the middle of messing
> with the hardware state.  On multi-card setups this may cause the VGA
> arbiter to switch to a different card while we're in the middle of things,
> with obvious disastrous effects.  This fixes things by making sure we
> only call the wrapped CloseScreen function at the very end of the driver's
> CloseScreen function.

Reviewed-by: Adam Jackson <ajax at redhat.com>

- ajax
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