myri10ge: fix rmmod crash

Rmmod myri10ge crash at free_netdev() -> netif_napi_del(), because napi
structures are already deallocated. To fix call netif_napi_del() before
kfree() at myri10ge_free_slices().

Cc: stable@kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index a7f2eed..1f4e868 100644 (file)
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -3645,6 +3645,7 @@ static void myri10ge_free_slices(struct myri10ge_priv *mgp)
                        dma_free_coherent(&pdev->dev, bytes,
                                          ss->fw_stats, ss->fw_stats_bus);
                        ss->fw_stats = NULL;
+                       netif_napi_del(&ss->napi);
                }
        }
        kfree(mgp->ss);