X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Flist.h;h=7690738b39e71b3a9d6f0aa852582e1b1e44bf42;hb=4157e287632c9f88ea9bee74d7296a20aa1654cc;hp=cc6d2aa6b415fef7627fc90ceb6ddfb8a6bf2256;hpb=3190dad97b5105ec9b9720f6d7bea54ee830fc2d;p=pandora-kernel.git

diff --git a/include/linux/list.h b/include/linux/list.h
index cc6d2aa6b415..7690738b39e7 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -361,6 +361,17 @@ static inline void list_splice_tail_init(struct list_head *list,
 #define list_first_entry(ptr, type, member) \
 	list_entry((ptr)->next, type, member)
 
+/**
+ * list_first_entry_or_null - get the first element from a list
+ * @ptr:	the list head to take the element from.
+ * @type:	the type of the struct this is embedded in.
+ * @member:	the name of the list_struct within the struct.
+ *
+ * Note that if the list is empty, it returns NULL.
+ */
+#define list_first_entry_or_null(ptr, type, member) \
+	(!list_empty(ptr) ? list_first_entry(ptr, type, member) : NULL)
+
 /**
  * list_for_each	-	iterate over a list
  * @pos:	the &struct list_head to use as a loop cursor.