From 5b86ac7627a389da9f398a6fe4f9bdbdedf50adb Mon Sep 17 00:00:00 2001
From: Ralph Metzler <rjkm@metzlerbros.de>
Date: Wed, 2 May 2018 15:45:00 +0200
Subject: [PATCH] limit link to 0-3

---
 ddbridge/ddbridge-io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ddbridge/ddbridge-io.c b/ddbridge/ddbridge-io.c
index d96d080..6792180 100644
--- a/ddbridge/ddbridge-io.c
+++ b/ddbridge/ddbridge-io.c
@@ -62,7 +62,7 @@ u32 ddbreadl(struct ddb *dev, u32 adr)
 {
 	if (unlikely(adr & 0xf0000000)) {
 		unsigned long flags;
-		u32 val, l = (adr >> DDB_LINK_SHIFT);
+		u32 val, l = (adr >> DDB_LINK_SHIFT) & 3;
 		struct ddb_link *link = &dev->link[l];
 
 		spin_lock_irqsave(&link->lock, flags);