net/enic: fix crash when releasing queues

[dpdk.git] / drivers / net / enic / enic_main.c

diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 996f999..738792e 100644 (file)
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -426,9 +426,14 @@ int enic_alloc_intr_resources(struct enic *enic)
 
 void enic_free_rq(void *rxq)
 {
-       struct vnic_rq *rq = (struct vnic_rq *)rxq;
-       struct enic *enic = vnic_dev_priv(rq->vdev);
+       struct vnic_rq *rq;
+       struct enic *enic;
 
+       if (rxq == NULL)
+               return;
+
+       rq = (struct vnic_rq *)rxq;
+       enic = vnic_dev_priv(rq->vdev);
        enic_rxmbuf_queue_release(enic, rq);
        rte_free(rq->mbuf_ring);
        rq->mbuf_ring = NULL;
@@ -514,9 +519,14 @@ err_exit:
 
 void enic_free_wq(void *txq)
 {
-       struct vnic_wq *wq = (struct vnic_wq *)txq;
-       struct enic *enic = vnic_dev_priv(wq->vdev);
+       struct vnic_wq *wq;
+       struct enic *enic;
+
+       if (txq == NULL)
+               return;
 
+       wq = (struct vnic_wq *)txq;
+       enic = vnic_dev_priv(wq->vdev);
        rte_memzone_free(wq->cqmsg_rz);
        vnic_wq_free(wq);
        vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);