From: Imre Deak <imre.deak@intel.com>
Date: Tue, 21 May 2013 17:03:20 +0000 (+0300)
Subject: drm/i915: avoid premature DP AUX timeouts
X-Git-Tag: v3.10-rc4~22^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3598706b52cb45ba0a9e8aa99ce5ac59140f2b8b;p=pandora-kernel.git

drm/i915: avoid premature DP AUX timeouts

During DP AUX communication we might time out 1 jiffy too early, because
the calculated expiry jiffy value is one less than needed.

This is only one reason for false DP AUX timeouts. For a complete
solution we also need the following fix, which is now queued for
mainline: http://marc.info/?l=linux-kernel&m=136748515710837&w=2

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=64133

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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