[PATCH net] ixgbevf: fix invalid use of napi_hash_del()

[Eric Dumazet]

From: Eric Dumazet <eduma...@google.com>

Calling napi_hash_del() before netif_napi_del() is dangerous
if a synchronize_rcu() is not enforced before NAPI struct freeing.

Lets leave this detail to core networking stack to get it right.

Signed-off-by: Eric Dumazet <eduma...@google.com>
Cc: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |    3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c 
b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 7eaac3234049..30a26e624e5a 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -2511,9 +2511,6 @@ static int ixgbevf_alloc_q_vectors(struct ixgbevf_adapter 
*adapter)
        while (q_idx) {
                q_idx--;
                q_vector = adapter->q_vector[q_idx];
-#ifdef CONFIG_NET_RX_BUSY_POLL
-               napi_hash_del(&q_vector->napi);
-#endif
                netif_napi_del(&q_vector->napi);
                kfree(q_vector);
                adapter->q_vector[q_idx] = NULL;