From 0769d39c993145754852b517ddd9c11586f0a014 Mon Sep 17 00:00:00 2001
From: Scott Thompson <postfail at hushmail.com>
Date: Sat, 25 Aug 2007 18:17:49 +1000
Subject: [PATCH] drm: ioremap return value checks

Signed-off-by: Scott Thompson <postfail <at> hushmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
---
 drivers/char/drm/drm_bufs.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/char/drm/drm_bufs.c b/drivers/char/drm/drm_bufs.c
index 3d1ec8234b8b..c115b39b8517 100644
--- a/drivers/char/drm/drm_bufs.c
+++ b/drivers/char/drm/drm_bufs.c
@@ -177,8 +177,14 @@ static int drm_addmap_core(struct drm_device * dev, unsigned int offset,
 						     MTRR_TYPE_WRCOMB, 1);
 			}
 		}
-		if (map->type == _DRM_REGISTERS)
+		if (map->type == _DRM_REGISTERS) {
 			map->handle = ioremap(map->offset, map->size);
+			if (!map->handle) {
+				drm_free(map, sizeof(*map), DRM_MEM_MAPS);
+				return -ENOMEM;
+			}
+		}
+				
 		break;
 	case _DRM_SHM:
 		list = drm_find_matching_map(dev, map);
-- 
2.20.1