[MIPS] Alchemy: Fix ids in Alchemy db dma device table

0 is a valid device id (DSCR_CMD0_UART0_TX), so we can't use it to mark
an empty entry in the device table. Use ~0 instead and search for id ~0
when looking for a free entry.

Signed-off-by: Wolfgang Ocker <weo@reccoware.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/au1000/common/dbdma.c b/arch/mips/au1000/common/dbdma.c
index 428ed275a0f60bb2131bdba50f0fe818690c2a9e..57f17b41098dfa8134a9b7b500ea1f66547abb8b 100644 (file)
--- 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));