From 54c63c0bbf48673e5550b62d3ca4272dd0a1bedf Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mlau@msc-ge.com>
Date: Wed, 7 May 2008 13:45:23 +0200
Subject: [PATCH] Alchemy: dbdma: add API to delete custom DDMA device ids.
Add API to delete custom DDMA device ids created with
au1xxx_ddma_device_add(), to avoid filling the ddma id table by repeatedly
loading/unloading a module using this function.
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
arch/mips/au1000/common/dbdma.c | 10 ++++++++++
include/asm-mips/mach-au1x00/au1xxx_dbdma.h | 1 +
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/arch/mips/au1000/common/dbdma.c b/arch/mips/au1000/common/dbdma.c
index 53377df..69171c6 100644
--- a/arch/mips/au1000/common/dbdma.c
+++ b/arch/mips/au1000/common/dbdma.c
@@ -220,6 +220,16 @@ au1xxx_ddma_add_device(dbdev_tab_t *dev)
}
EXPORT_SYMBOL(au1xxx_ddma_add_device);
+void au1xxx_ddma_del_device(u32 devid)
+{
+ dbdev_tab_t *p = find_dbdev_id(devid);
+ if (p != NULL) {
+ memset(p, 0, sizeof(dbdev_tab_t));
+ p->dev_id = ~0;
+ }
+}
+EXPORT_SYMBOL(au1xxx_ddma_del_device);
+
/* Allocate a channel and return a non-zero descriptor if successful.
*/
u32
diff --git a/include/asm-mips/mach-au1x00/au1xxx_dbdma.h b/include/asm-mips/mach-au1x00/au1xxx_dbdma.h
index 93d507c..5e33ff0 100644
--- a/include/asm-mips/mach-au1x00/au1xxx_dbdma.h
+++ b/include/asm-mips/mach-au1x00/au1xxx_dbdma.h
@@ -367,6 +367,7 @@ void au1xxx_dbdma_dump(u32 chanid);
u32 au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr );
u32 au1xxx_ddma_add_device( dbdev_tab_t *dev );
+void au1xxx_ddma_del_device(u32 devid);
void * au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp);
/*
--
1.5.5.1
--
