From ccb2ad579f910e6146adf4eb3aa50325253ee8c9 Mon Sep 17 00:00:00 2001
From: Robert Fitzsimons <robfitz@273k.net>
Date: Sat, 24 Apr 2010 01:18:13 +0100
Subject: [PATCH] drm/radeon/kms/agp The wrong AGP chipset can cause a NULL
 pointer dereference

Selecting the wrong or no CONFIG_AGP_* chipset can cause a NULL pointer
dereference when combined with CONFIG_DRM_RADEON_KMS and an old system
with a R100 AGP card (should effect other cards too).  The agp field
will be set to NULL if no suitable AGP chipset driver is loaded,
drm_agp_acquire already preforms a suitable NULL check so it can be used
directly.

Signed-off-by: Robert Fitzsimons <robfitz@273k.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Reading git-format-patch failed