IB/qib: Reset packet list after freeing

Reset the list pointers after freeing the SDMA packet list.  This is
done to any potential double-free cases.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/hw/qib/qib_user_sdma.c b/drivers/infiniband/hw/qib/qib_user_sdma.c
index 4c19e06..66208bc 100644 (file)
--- a/drivers/infiniband/hw/qib/qib_user_sdma.c
+++ b/drivers/infiniband/hw/qib/qib_user_sdma.c
@@ -382,6 +382,7 @@ static void qib_user_sdma_free_pkt_list(struct device *dev,
 
                kmem_cache_free(pq->pkt_slab, pkt);
        }
+       INIT_LIST_HEAD(list);
 }
 
 /*