[Xen-devel] [PATCH 2/2] swiotlb-xen: pass dev_addr to swiotlb_tbl_unmap_single

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

Need to pass the pointer within the swiotlb internal buffer to the
swiotlb library, that in the case of xen_unmap_single is dev_addr, not
paddr.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
CC: konrad.wilk@xxxxxxxxxx
CC: stable@xxxxxxxxxxxxxxx
---
 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 810ad41..5ea1e3c 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -451,7 +451,7 @@ static void xen_unmap_single(struct device *hwdev, 
dma_addr_t dev_addr,
 
        /* NOTE: We use dev_addr here, not paddr! */
        if (is_xen_swiotlb_buffer(dev_addr)) {
-               swiotlb_tbl_unmap_single(hwdev, paddr, size, dir);
+               swiotlb_tbl_unmap_single(hwdev, dev_addr, size, dir);
                return;
        }
 
-- 
1.7.10.4


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