[PATCH 2/2] drm/gud: Add async_flush module parameter

[Peter Stuge]

Noralf Trønnes wrote:
> Provide a way for userspace to choose synchronous flushing/pageflips.
> This helps save CPU and power.
> 
> It is also useful for test scripts since userspace can know when a flush
> has happended and wait before doing the next visual test.
> 
> Cc: Peter Stuge <peter at stuge.se>
> Cc: Linus Walleij <linus.walleij at linaro.org>
> Signed-off-by: Noralf Trønnes <noralf at tronnes.org>

Reviewed-by: Peter Stuge <peter at stuge.se>