From cb89ba243baf6e5f7ee1ddf491fa45e0cabccdd1 Mon Sep 17 00:00:00 2001
From: John Allen <jallen@linux.vnet.ibm.com>
Date: Mon, 19 Jun 2017 11:27:53 -0500
Subject: [PATCH] ibmvnic: Return from ibmvnic_resume if not in VNIC_OPEN state

References: bsc#1045235
Patch-mainline: v4.13-rc1
Git-commit: cb89ba243baf6e5f7ee1ddf491fa45e0cabccdd1

If the ibmvnic driver is not in the VNIC_OPEN state, return from
ibmvnic_resume callback. If we are not in the VNIC_OPEN state, interrupts
may not be initialized and directly calling the interrupt handler will
cause a crash.

Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 722daf55d757..013509544632 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -3859,6 +3859,9 @@ static int ibmvnic_resume(struct device *dev)
 	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 	int i;
 
+	if (adapter->state != VNIC_OPEN)
+		return 0;
+
 	/* kick the interrupt handlers just in case we lost an interrupt */
 	for (i = 0; i < adapter->req_rx_queues; i++)
 		ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
-- 
2.10.2