[Intel-gfx] [PATCH 2/3] drm/i915: check PPS regs for sanity when using eDP

[Chris Wilson]

On Tue, 10 Apr 2012 11:58:04 -0700, Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> If these regs don't have valid values, the panel won't come up, and may
> even cause a system hang.  So do a basic sanity check when an eDP panel
> is detected.
> 
> Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>

Other than adding a cleanup: error path (definitely before the third
person cut'n'pastes the intel_dp*destroy()), and that checking for zero
seems a little crude,

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre