Re: [PATCH v3 0/3] virtio DMA API core stuff

[David Woodhouse]

On Tue, 2015-10-27 at 23:38 -0700, Andy Lutomirski wrote:
> 
> Changes from v2:
>  - Fix really embarrassing bug.  This version actually works.

So embarrassing you didn't want to tell us what it was? ...

--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -292,7 +292,7 @@ static inline int virtqueue_add(struct virtqueue *_vq,
                        vq, desc, total_sg * sizeof(struct vring_desc),
                        DMA_TO_DEVICE);
 
-               if (vring_mapping_error(vq, vq->vring.desc[head].addr))
+               if (vring_mapping_error(vq, addr))
                        goto unmap_release;
 
                vq->vring.desc[head].flags = cpu_to_virtio16(_vq->vdev, 
VRING_DESC_F_INDIRECT);

That wasn't going to be the reason for Christian's failure, was it?


-- 
dwmw2

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