linux-kernel - [PATCH 5.4 58/98] ibmvnic: fix call_netdevice_notifiers in do

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Date:   Tue,  1 Dec 2020 09:53:35 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Lijun Pan <ljp@...ux.ibm.com>,
        Dany Madden <drt@...ux.ibm.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 58/98] ibmvnic: fix call_netdevice_notifiers in do_reset

From: Lijun Pan <ljp@...ux.ibm.com>

[ Upstream commit 8393597579f5250636f1cff157ea73f402b6501e ]

When netdev_notify_peers was substituted in
commit 986103e7920c ("net/ibmvnic: Fix RTNL deadlock during device reset"),
call_netdevice_notifiers(NETDEV_RESEND_IGMP, dev) was missed.
Fix it now.

Fixes: 986103e7920c ("net/ibmvnic: Fix RTNL deadlock during device reset")
Signed-off-by: Lijun Pan <ljp@...ux.ibm.com>
Reviewed-by: Dany Madden <drt@...ux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index f357b9cbfee72..8d9e95c2725fb 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -1994,8 +1994,10 @@ static int do_reset(struct ibmvnic_adapter *adapter,
 	for (i = 0; i < adapter->req_rx_queues; i++)
 		napi_schedule(&adapter->napi[i]);
 
-	if (adapter->reset_reason != VNIC_RESET_FAILOVER)
+	if (adapter->reset_reason != VNIC_RESET_FAILOVER) {
 		call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, netdev);
+		call_netdevice_notifiers(NETDEV_RESEND_IGMP, netdev);
+	}
 
 	rc = 0;
 
-- 
2.27.0