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linux/ixp4xx: sync 2.6.36 patches to 2.6.36-rc6

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23150 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
acoul 2010-09-29 13:50:16 +00:00
parent 47aae06f26
commit 762de7c3f1
1 changed files with 27 additions and 0 deletions
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27
target/linux/ixp4xx/patches-2.6.36/050-disable_dmabounce.patch
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@ -119,3 +119,30 @@
#define ISA_DMA_THRESHOLD (SZ_64M - 1) #define ISA_DMA_THRESHOLD (SZ_64M - 1)
#define MAX_DMA_ADDRESS (PAGE_OFFSET + SZ_64M) #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) {