enic: make vnic_wq_buf doubly linked

[cascardo/linux.git] / drivers / net / ethernet / cisco / enic / vnic_wq.c

diff --git a/drivers/net/ethernet/cisco/enic/vnic_wq.c b/drivers/net/ethernet/cisco/enic/vnic_wq.c
index 3e6b8d5..b5a1c93 100644 (file)
--- a/drivers/net/ethernet/cisco/enic/vnic_wq.c
+++ b/drivers/net/ethernet/cisco/enic/vnic_wq.c
@@ -47,11 +47,14 @@ static int vnic_wq_alloc_bufs(struct vnic_wq *wq)
                                wq->ring.desc_size * buf->index;
                        if (buf->index + 1 == count) {
                                buf->next = wq->bufs[0];
+                               buf->next->prev = buf;
                                break;
                        } else if (j + 1 == VNIC_WQ_BUF_BLK_ENTRIES(count)) {
                                buf->next = wq->bufs[i + 1];
+                               buf->next->prev = buf;
                        } else {
                                buf->next = buf + 1;
+                               buf->next->prev = buf;
                                buf++;
                        }
                }