4.9-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 31f6b61d810654fb3ef43f4d8afda0f44b142fad ]
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 liuyonglong@huawei.com Signed-off-by: Peng Li lipeng321@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- 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 b7c8433a7a37..0b4d90ceea7a 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c @@ -290,6 +290,9 @@ 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); }