diff --git a/[refs] b/[refs]
index c5c4a692d019..cf975286efa3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: da1e368032d7ff241b9cf1059fa059d781cfeba7
+refs/heads/master: fffba64ca37e8f06020f89e878f0d76a8e121c4e
diff --git a/trunk/drivers/mfd/wm8400-core.c b/trunk/drivers/mfd/wm8400-core.c
index 865ce013a821..e08aafa663dc 100644
--- a/trunk/drivers/mfd/wm8400-core.c
+++ b/trunk/drivers/mfd/wm8400-core.c
@@ -118,7 +118,7 @@ static int wm8400_read(struct wm8400 *wm8400, u8 reg, int num_regs, u16 *dest)
 {
 	int i, ret = 0;
 
-	BUG_ON(reg + num_regs - 1 > ARRAY_SIZE(wm8400->reg_cache));
+	BUG_ON(reg + num_regs > ARRAY_SIZE(wm8400->reg_cache));
 
 	/* If there are any volatile reads then read back the entire block */
 	for (i = reg; i < reg + num_regs; i++)
@@ -144,7 +144,7 @@ static int wm8400_write(struct wm8400 *wm8400, u8 reg, int num_regs,
 {
 	int ret, i;
 
-	BUG_ON(reg + num_regs - 1 > ARRAY_SIZE(wm8400->reg_cache));
+	BUG_ON(reg + num_regs > ARRAY_SIZE(wm8400->reg_cache));
 
 	for (i = 0; i < num_regs; i++) {
 		BUG_ON(!reg_data[reg + i].writable);