From: Dave Airlie <airlied@redhat.com>
Date: Fri, 28 Nov 2008 04:22:24 +0000 (+1000)
Subject: drm: move to kref per-master structures.
X-Git-Tag: v2.6.29-rc1~566^2~35
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c1c2871a6a3a114853ec6836e9035ac1c0c7f7a;p=pandora-kernel.git

drm: move to kref per-master structures.

This is step one towards having multiple masters sharing a drm
device in order to get fast-user-switching to work.

It splits out the information associated with the drm master
into a separate kref counted structure, and allocates this when
a master opens the device node. It also allows the current master
to abdicate (say while VT switched), and a new master to take over
the hardware.

It moves the Intel and radeon drivers to using the sarea from
within the new master structures.

Signed-off-by: Dave Airlie <airlied@redhat.com>
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