linux-kernel - [PATCH 3.13.y-ckt 083/139] swiotlb-xen: call xen_dma_sync_single_for

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Message-Id: <1422483682-15393-84-git-send-email-kamal@canonical.com>
Date:	Wed, 28 Jan 2015 14:20:26 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 083/139] swiotlb-xen: call xen_dma_sync_single_for_device when appropriate

3.13.11-ckt15 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stefano Stabellini <stefano.stabellini@...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@...citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/xen/swiotlb-xen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index c65f6d0..d277278 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -484,7 +484,7 @@ 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;
-- 
1.9.1

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