virtio: Use the sg_phys convenience function.

Simple cleanup.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 9859213aa658..74c245092b5c 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -99,16 +99,14 @@ static int vring_add_buf(struct virtqueue *_vq,
         head = vq->free_head;
         for (i = vq->free_head; out; i = vq->vring.desc[i].next, out--) {
                 vq->vring.desc[i].flags = VRING_DESC_F_NEXT;
-                vq->vring.desc[i].addr = (page_to_pfn(sg_page(sg))<<PAGE_SHIFT)
-                        + sg->offset;
+                vq->vring.desc[i].addr = sg_phys(sg);
                 vq->vring.desc[i].len = sg->length;
                 prev = i;
                 sg++;
         }
         for (; in; i = vq->vring.desc[i].next, in--) {
                 vq->vring.desc[i].flags = VRING_DESC_F_NEXT|VRING_DESC_F_WRITE;
-                vq->vring.desc[i].addr = (page_to_pfn(sg_page(sg))<<PAGE_SHIFT)
-                        + sg->offset;
+                vq->vring.desc[i].addr = sg_phys(sg);
                 vq->vring.desc[i].len = sg->length;
                 prev = i;
                 sg++;