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Commit ddf0b3a6 authored by Mitch Williams's avatar Mitch Williams Committed by Jeff Kirsher
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i40evf: don't go further down 



If the device is down, there's no place to go but up, so don't try to go
down even more. This prevents a CPU soft lock in napi_disable().

Change-ID: I8b058b9ee974dfa01c212fae2597f4f54b333314
Signed-off-by: default avatarMitch Williams <mitch.a.williams@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 04b73bd7

drivers/net/ethernet/intel/i40evf/i40evf_main.c

+4 −2
Original line number Diff line number Diff line
@@ -968,6 +968,9 @@ void i40evf_down(struct i40evf_adapter *adapter) 
	struct net_device *netdev = adapter->netdev;

	struct i40evf_mac_filter *f;



	if (adapter->state == __I40EVF_DOWN)

		return;



	/* remove all MAC filters */

	list_for_each_entry(f, &adapter->mac_filter_list, list) {

		f->remove = true;
@@ -1785,12 +1788,11 @@ static int i40evf_close(struct net_device *netdev) 
	if (adapter->state <= __I40EVF_DOWN)

		return 0;



	/* signal that we are down to the interrupt handler */

	adapter->state = __I40EVF_DOWN;



	set_bit(__I40E_DOWN, &adapter->vsi.state);



	i40evf_down(adapter);

	adapter->state = __I40EVF_DOWN;

	i40evf_free_traffic_irqs(adapter);



	i40evf_free_all_tx_resources(adapter);