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

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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>
This commit is contained in:
Wolfgang Ocker
2008-02-10 20:31:33 +01:00
committed by Ralf Baechle
parent baadac8b10
commit 0ec734c2b8
1 changed files with 17 additions and 17 deletions
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34
arch/mips/au1000/common/dbdma.c
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@@ -161,22 +161,22 @@ static dbdev_tab_t dbdev_tab[] = {
{ DSCR_CMD0_ALWAYS, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 }, { DSCR_CMD0_ALWAYS, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
/* Provide 16 user definable device types */ /* 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) #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; dbdev_tab_t *p=NULL;
static u16 new_id=0x1000; static u16 new_id=0x1000;
p = find_dbdev_id(0); p = find_dbdev_id(~0);
if ( NULL != p ) if ( NULL != p )
{ {
memcpy(p, dev, sizeof(dbdev_tab_t)); memcpy(p, dev, sizeof(dbdev_tab_t));