Commit 9490c6c6 authored Nov 21, 2014 by Stefano Stabellini Committed by David Vrabel Dec 04, 2014

swiotlb-xen: call xen_dma_sync_single_for_device when appropriate



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>
CC: stable@vger.kernel.org

parent c884227e

drivers/xen/swiotlb-xen.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -502,7 +502,7 @@ 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;