From: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
Date: Mon, 14 Aug 2006 15:11:14 +0000 (+0200)
Subject: Avoid kernel oops in some error paths calling drm_lastclose().
X-Git-Tag: libdrm-2.3.1~561
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4daa024918d461ab8d173631fa5187dc50253b67;p=platform%2Fupstream%2Flibdrm.git

Avoid kernel oops in some error paths calling drm_lastclose().
---

diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index 0281178..79209db 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -163,11 +163,13 @@ int drm_lastclose(drm_device_t * dev)
 		dev->unique_len = 0;
 	}
 
-        list_for_each_entry_safe(pt, next, &dev->magicfree, head) {
-                list_del(&pt->head);
-                drm_ht_remove_item(&dev->magiclist, &pt->hash_item);
-                drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
-        }
+	if (dev->magicfree.next) {
+		list_for_each_entry_safe(pt, next, &dev->magicfree, head) {
+			list_del(&pt->head);
+			drm_ht_remove_item(&dev->magiclist, &pt->hash_item);
+			drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
+		}
+	}
 
 
 	/* Clear AGP information */