[Intel-gfx] [PATCH] drm/i915: Ensure that while(INREG()) are bounded.

[Eric Anholt]

On Fri,  6 Aug 2010 16:11:54 +0100, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> Add a new macro, wait_for, to simplify the act of waiting on a register
> to change state. wait_for() takes three arguments, the condition to
> inspect on every loop, the maximum amount of time to wait and whether to
> yield the cpu for a length of time after each check.

These failures seem DRM_ERROR()-worthy.  What do you think?  But I do
like the looks of this patch.
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