[PATCH 3.18 013/150] swiotlb-xen: call xen_dma_sync_single_for_device when appropriate

Greg Kroah-Hartman
2015-01-14T07:25:56Z

From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

commit 9490c6c67e2f41760de8ece4e4f56f75f84ceb9e upstream.

In xen_swiotlb_sync_single we always call xen_dma_sync_single_for_cpu,
even when we should call xen_dma_sync_single_for_device. Fix that.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/xen/swiotlb-xen.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -500,7 +500,7 @@ xen_swiotlb_sync_single(struct device *h
swiotlb_tbl_sync_single(hwdev, paddr, size, dir, target);

if (target == SYNC_FOR_DEVICE)
- xen_dma_sync_single_for_cpu(hwdev, dev_addr, size, dir);
+ xen_dma_sync_single_for_device(hwdev, dev_addr, size, dir);

if (dir != DMA_FROM_DEVICE)
return;