drm/i915/dp: Read the HPD status before trying to read the DPCD
Just like: Author: Damien Lespiau <damien.lespiau@intel.com> Date: Wed Dec 12 19:37:22 2012 +0000 drm/i915/hdmi: Read the HPD status before trying to read the EDID But this time for DiplayPort. v2: Adapt to the ibx_ name change and don't add commit hash (Chris Wilson, Jani Nikula) Reviewed-by: NJani Nikula <jani.nikula@intel.com> Signed-off-by: NDamien Lespiau <damien.lespiau@intel.com> Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
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