From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed, 24 Apr 2013 09:13:35 +0000 (+0200)
Subject: drm/i915: disable interrupts earlier in the driver unload code
X-Git-Tag: v3.11-rc1~65^2~131^2~115
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd0c06420d39958032655a04cfd194d5a7b38f83;p=pandora-kernel.git

drm/i915: disable interrupts earlier in the driver unload code

Our rps code relies on the interrupts being off to prevent re-arming
of the work items at inopportune moments.

Also drop the redundant cancel_work for the main rps work,
disable_gt_powersave already takes care of that.

Finally add a WARN_ON to ensure we obey that piece of ordering
constraint. Long term I want to lock down the setup/teardown code in a
similar way to how we painstakingly check modeset sequence constraints
already.

v2: Disable polling after hpd handling is shut down - since Egbert's
hpd irq storm handling the hotplug work can re-arm the polling
handler. Spotted by Jani Nikula.

Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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