From 31f6b61d810654fb3ef43f4d8afda0f44b142fad Mon Sep 17 00:00:00 2001 From: Yonglong Liu Date: Sat, 15 Dec 2018 11:53:24 +0800 Subject: [PATCH] net: hns: Clean rx fbd when ae stopped. If there are packets in hardware when changing the speed or duplex, it may cause hardware hang up. This patch adds the code to wait rx fbd clean up when ae stopped. Signed-off-by: Yonglong Liu Signed-off-by: Peng Li Signed-off-by: David S. Miller --- drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c index b52029e26d15..ad1779fc410e 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c @@ -379,6 +379,9 @@ static void hns_ae_stop(struct hnae_handle *handle) hns_ae_ring_enable_all(handle, 0); + /* clean rx fbd. */ + hns_rcb_wait_fbd_clean(handle->qs, handle->q_num, RCB_INT_FLAG_RX); + (void)hns_mac_vm_config_bc_en(mac_cb, 0, false); }