From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Fri, 10 Apr 2015 15:21:31 +0000 (+0300)
Subject: drm/i915: Only wait for required lanes in vlv_wait_port_ready()
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~46^2~54^2~1
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9b6de0a1552175620ced3a7a7a552d4e7a379538;p=pandora-kernel.git

drm/i915: Only wait for required lanes in vlv_wait_port_ready()

Currently vlv_wait_port_ready() waits for all four lanes on the
appropriate channel. This no longer works on CHV when the unused
lanes may be power gated. So pass in a mask of lanes that the
caller is expecting to be ready.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by:  Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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