Merge commit 'v2.6.30-rc5' into core/iommu

Merge reason: core/iommu was on an .30-rc1 base,
              update it to .30-rc5 to refresh.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 24 insertions, 7 deletions

diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index edcd5fbf965..e098ec158dd 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -10,11 +10,22 @@
  * for more details.
  */
 #include <linux/mm.h>
+#include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/dma-debug.h>
+#include <linux/io.h>
 #include <asm/cacheflush.h>
 #include <asm/addrspace.h>
-#include <asm/io.h>
+
+#define PREALLOC_DMA_DEBUG_ENTRIES	4096
+
+static int __init dma_init(void)
+{
+	dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
+	return 0;
+}
+fs_initcall(dma_init);
 
 void *dma_alloc_coherent(struct device *dev, size_t size,
 			   dma_addr_t *dma_handle, gfp_t gfp)
@@ -45,6 +56,9 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
 	split_page(pfn_to_page(virt_to_phys(ret) >> PAGE_SHIFT), order);
 
 	*dma_handle = virt_to_phys(ret);
+
+	debug_dma_alloc_coherent(dev, size, *dma_handle, ret_nocache);
+
 	return ret_nocache;
 }
 EXPORT_SYMBOL(dma_alloc_coherent);
@@ -56,12 +70,15 @@ void dma_free_coherent(struct device *dev, size_t size,
 	unsigned long pfn = dma_handle >> PAGE_SHIFT;
 	int k;
 
-	if (!dma_release_from_coherent(dev, order, vaddr)) {
-		WARN_ON(irqs_disabled());	/* for portability */
-		for (k = 0; k < (1 << order); k++)
-			__free_pages(pfn_to_page(pfn + k), 0);
-		iounmap(vaddr);
-	}
+	WARN_ON(irqs_disabled());	/* for portability */
+
+	if (dma_release_from_coherent(dev, order, vaddr))
+		return;
+
+	debug_dma_free_coherent(dev, size, vaddr, dma_handle);
+	for (k = 0; k < (1 << order); k++)
+		__free_pages(pfn_to_page(pfn + k), 0);
+	iounmap(vaddr);
 }
 EXPORT_SYMBOL(dma_free_coherent);