From: Ben Skeggs <bskeggs@redhat.com>
Date: Thu, 11 Nov 2010 06:14:56 +0000 (+1000)
Subject: drm/nv50: rework PGPIO IRQ handling and hotplug detection
X-Git-Tag: v2.6.38-rc1~419^2~37^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fce2bad0ee2666d6a10bfeb634b1021469cc3d79;p=pandora-kernel.git

drm/nv50: rework PGPIO IRQ handling and hotplug detection

Allows callers to install their own handlers for when a GPIO line
changes state (such as for hotplug detect).

This also fixes a bug where we weren't acknowledging the GPIO IRQ
until after the bottom half had run, causing a severe IRQ storm
in some cases.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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