From 08354a574155edfb30925dea744a18d88b4d911c Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Tue, 8 Jan 2013 13:44:50 +0000
Subject: [PATCH] --- yaml --- r: 348804 b: refs/heads/master c:
 5bd9f4bb34c16b62725b9486a290c01b1fdfec1c h: refs/heads/master v: v3

---
 [refs]                                     |  2 +-
 trunk/drivers/base/regmap/regmap-debugfs.c | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 899020aec8a4..9ead2ae588ea 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 95f971c745a343255744703dc4ae8d78508519cc
+refs/heads/master: 5bd9f4bb34c16b62725b9486a290c01b1fdfec1c
diff --git a/trunk/drivers/base/regmap/regmap-debugfs.c b/trunk/drivers/base/regmap/regmap-debugfs.c
index 9099cd33fbcb..720e14248167 100644
--- a/trunk/drivers/base/regmap/regmap-debugfs.c
+++ b/trunk/drivers/base/regmap/regmap-debugfs.c
@@ -116,6 +116,16 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
 		}
 	}
 
+	/*
+	 * This should never happen; we return above if we fail to
+	 * allocate and we should never be in this code if there are
+	 * no registers at all.
+	 */
+	if (list_empty(&map->debugfs_off_cache)) {
+		WARN_ON(list_empty(&map->debugfs_off_cache));
+		return base;
+	}
+
 	/* Find the relevant block */
 	list_for_each_entry(c, &map->debugfs_off_cache, list) {
 		if (from >= c->min && from <= c->max) {