From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/arch/arm/kernel/dma-isa.c | 13 ++++++++-----
1 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/kernel/arch/arm/kernel/dma-isa.c b/kernel/arch/arm/kernel/dma-isa.c
index 84363fe..2d90ecc 100644
--- a/kernel/arch/arm/kernel/dma-isa.c
+++ b/kernel/arch/arm/kernel/dma-isa.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/kernel/dma-isa.c
*
* Copyright (C) 1999-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*
* ISA DMA primitives
* Taken from various sources, including:
@@ -55,6 +52,12 @@
return chan < 4 ? count : (count << 1);
}
+static struct device isa_dma_dev = {
+ .init_name = "fallback device",
+ .coherent_dma_mask = ~(dma_addr_t)0,
+ .dma_mask = &isa_dma_dev.coherent_dma_mask,
+};
+
static void isa_enable_dma(unsigned int chan, dma_t *dma)
{
if (dma->invalid) {
@@ -89,7 +92,7 @@
dma->sg = &dma->buf;
dma->sgcount = 1;
dma->buf.length = dma->count;
- dma->buf.dma_address = dma_map_single(NULL,
+ dma->buf.dma_address = dma_map_single(&isa_dma_dev,
dma->addr, dma->count,
direction);
}
--
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