From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Thu, 7 Jul 2011 18:10:57 +0000 (-0700)
Subject: drm/i915/dp: retry link status read 3 times on failure
X-Git-Tag: v3.0~44^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=61da5fab5a9b129cf05b1fe4666c3e45b3103fd4;p=pandora-kernel.git

drm/i915/dp: retry link status read 3 times on failure

Especially after a hotplug or power status change, the sink may not
reply immediately to a link status query.  So retry 3 times per the spec
to really make sure nothing is there.

See section 9.1 of the 1.1a DisplayPort spec.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
---

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