From: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Fri, 21 Feb 2014 16:52:19 +0000 (-0300)
Subject: drm/i915: put runtime PM only at the end of intel_mark_idle
X-Git-Tag: v3.15-rc1~51^2~55^2~65
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb4cdd5345bf344d978e18835583641f2c156ce5;p=pandora-kernel.git

drm/i915: put runtime PM only at the end of intel_mark_idle

Because intel_mark_idle still touches some registers: it needs the
machine to be awake. If you set both the autosuspend and PC8 delays to
zero, you can get a "Device suspended" WARN when gen6_rps_idle touches
registers.

This is not easy to reproduce, but happens once in a while when
running pm_pc8.

Testcase: igt/pm_pc8
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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