diff --git a/arch/mips/au1000/common/dbdma.c b/arch/mips/au1000/common/dbdma.c
index 428ed275a0f60bb2131bdba50f0fe818690c2a9e..57f17b41098dfa8134a9b7b500ea1f66547abb8b 100644
--- a/arch/mips/au1000/common/dbdma.c
+++ b/arch/mips/au1000/common/dbdma.c
@@ -161,22 +161,22 @@ static dbdev_tab_t dbdev_tab[] = {
 	{ DSCR_CMD0_ALWAYS, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
 
 	/* Provide 16 user definable device types */
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
-	{ 0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
+	{ ~0, 0, 0, 0, 0, 0, 0 },
 };
 
 #define DBDEV_TAB_SIZE	ARRAY_SIZE(dbdev_tab)
@@ -209,7 +209,7 @@ au1xxx_ddma_add_device(dbdev_tab_t *dev)
 	dbdev_tab_t *p=NULL;
 	static u16 new_id=0x1000;
 
-	p = find_dbdev_id(0);
+	p = find_dbdev_id(~0);
 	if ( NULL != p )
 	{
 		memcpy(p, dev, sizeof(dbdev_tab_t));