linux/ixp4xx: sync 2.6.36 patches to 2.6.36-rc6
authorAlexandros C. Couloumbis <alex@ozo.com>
Wed, 29 Sep 2010 13:50:16 +0000 (13:50 +0000)
committerAlexandros C. Couloumbis <alex@ozo.com>
Wed, 29 Sep 2010 13:50:16 +0000 (13:50 +0000)
SVN-Revision: 23150

target/linux/ixp4xx/patches-2.6.36/050-disable_dmabounce.patch

index 4652a4f..33509ba 100644 (file)
  
  #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) {