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swiotlb-xen: call xen_dma_sync_single_for_device when appropriate 

commit 9490c6c67e 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>
This commit is contained in:
Stefano Stabellini 2014-11-21 16:55:12 +00:00 committed by Greg Kroah-Hartman
parent 5e8ad2ed95
commit f4862f0e93
1 changed files with 1 additions and 1 deletions
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2
drivers/xen/swiotlb-xen.c
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@ -500,7 +500,7 @@ xen_swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr,
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;