From: Michael Chan <michael.chan@broadcom.com>
Date: Sat, 14 Sep 2019 00:01:38 -0400
Subject: bnxt_en: Don't proceed in .ndo_set_rx_mode() when device is not in
 open state.
Patch-mainline: v5.4-rc1
Git-commit: 268d0895f1b9690755d91b6ced60c9d8d17a7567
References: jsc#SLE-8371 bsc#1153274

Check the BNXT_STATE_OPEN flag instead of netif_running() in
bnxt_set_rx_mode().  If the driver is going through any reset, such
as firmware reset or even TX timeout, it may not be ready to set the RX
mode and may crash.  The new rx mode settings will be picked up when
the device is opened again later.

Fixes: 230d1f0de754 ("bnxt_en: Handle firmware reset.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -9557,14 +9557,16 @@ static bool bnxt_uc_list_updated(struct
 static void bnxt_set_rx_mode(struct net_device *dev)
 {
 	struct bnxt *bp = netdev_priv(dev);
-	struct bnxt_vnic_info *vnic = &bp->vnic_info[0];
-	u32 mask = vnic->rx_mask;
+	struct bnxt_vnic_info *vnic;
 	bool mc_update = false;
 	bool uc_update;
+	u32 mask;
 
-	if (!netif_running(dev))
+	if (!test_bit(BNXT_STATE_OPEN, &bp->state))
 		return;
 
+	vnic = &bp->vnic_info[0];
+	mask = vnic->rx_mask;
 	mask &= ~(CFA_L2_SET_RX_MASK_REQ_MASK_PROMISCUOUS |
 		  CFA_L2_SET_RX_MASK_REQ_MASK_MCAST |
 		  CFA_L2_SET_RX_MASK_REQ_MASK_ALL_MCAST |