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    Subject[PATCH 3.14 12/77] swiotlb-xen: pass dev_addr to swiotlb_tbl_unmap_single
    Date
    3.14-stable review patch.  If anyone has any objections, please let me know.

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

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

    commit 2c3fc8d26dd09b9d7069687eead849ee81c78e46 upstream.

    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@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
    @@ -449,7 +449,7 @@ static void xen_unmap_single(struct devi

    /* 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;
    }




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