CA-43749-fix-swiotlb-xen-sync-single-dma-direction-mapping.patch

diff -r 1820fe6119d0 lib/swiotlb-xen.c
--- a/lib/swiotlb-xen.c	Thu Dec 30 14:53:01 2010 +0000
+++ b/lib/swiotlb-xen.c	Fri Feb 04 09:09:32 2011 +0000
@@ -574,6 +574,9 @@
 
 	BUG_ON(dir == DMA_NONE);
 
+	if (dir == DMA_BIDIRECTIONAL)
+		dir = DMA_FROM_DEVICE;
+
 	if (is_swiotlb_buffer(dev_addr))
 		sync_single(hwdev, phys_to_virt(paddr), size, dir);
 }
@@ -586,6 +589,9 @@
 	phys_addr_t paddr = dma_to_phys(hwdev, dev_addr);
 
 	BUG_ON(dir == DMA_NONE);
+
+	if (dir == DMA_BIDIRECTIONAL)
+		dir = DMA_TO_DEVICE;
 
 	if (is_swiotlb_buffer(dev_addr))
 		sync_single(hwdev, phys_to_virt(paddr), size, dir);