From 762de7c3f1ce1a0f63a56e4f6f178d961281017a Mon Sep 17 00:00:00 2001
From: acoul <acoul@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Wed, 29 Sep 2010 13:50:16 +0000
Subject: linux/ixp4xx: sync 2.6.36 patches to 2.6.36-rc6

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23150 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../patches-2.6.36/050-disable_dmabounce.patch     | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'target/linux')

diff --git a/target/linux/ixp4xx/patches-2.6.36/050-disable_dmabounce.patch b/target/linux/ixp4xx/patches-2.6.36/050-disable_dmabounce.patch
index 4652a4fc6..33509baa2 100644
--- a/target/linux/ixp4xx/patches-2.6.36/050-disable_dmabounce.patch
+++ b/target/linux/ixp4xx/patches-2.6.36/050-disable_dmabounce.patch
@@ -119,3 +119,30 @@
  
  #define ISA_DMA_THRESHOLD (SZ_64M - 1)
  #define MAX_DMA_ADDRESS		(PAGE_OFFSET + SZ_64M)
+--- a/arch/arm/common/dmabounce.c
++++ b/arch/arm/common/dmabounce.c
+@@ -30,6 +30,7 @@
+ #include <linux/dma-mapping.h>
+ #include <linux/dmapool.h>
+ #include <linux/list.h>
++#include <linux/pci.h>
+ #include <linux/scatterlist.h>
+ 
+ #include <asm/cacheflush.h>
+@@ -248,8 +249,15 @@ static inline dma_addr_t map_single(stru
+ 		needs_bounce = (dma_addr | (dma_addr + size - 1)) & ~mask;
+ 	}
+ 
+-	if (device_info && (needs_bounce || dma_needs_bounce(dev, dma_addr, size))) {
++#ifdef CONFIG_DMABOUNCE
++int dma_needs_bounce_2(struct device *dev, dma_addr_t dma_addr, size_t size)
++{
++	return (dev->bus == &pci_bus_type ) && ((dma_addr + size) > SZ_64M);
++}
++
++	if (device_info && (needs_bounce || dma_needs_bounce_2(dev, dma_addr, size))) {
+ 		struct safe_buffer *buf;
++#endif
+ 
+ 		buf = alloc_safe_buffer(device_info, ptr, size, dir);
+ 		if (buf == 0) {
-- 
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