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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Lijun Pan <ljp@linux.ibm.com>,
        Dany Madden <drt@linux.ibm.com>,
        Jakub Kicinski <kuba@kernel.org>
Subject: [PATCH 4.19 10/32] ibmvnic: fix call_netdevice_notifiers in do_reset
Date:   Sun,  6 Dec 2020 12:17:10 +0100
Message-Id: <20201206111556.268980412@linuxfoundation.org>
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References: <20201206111555.787862631@linuxfoundation.org>
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From: Lijun Pan <ljp@linux.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@linux.ibm.com>
Reviewed-by: Dany Madden <drt@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/ibm/ibmvnic.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -1878,8 +1878,10 @@ static int do_reset(struct ibmvnic_adapt
 		napi_schedule(&adapter->napi[i]);
 
 	if (adapter->reset_reason != VNIC_RESET_FAILOVER &&
-	    adapter->reset_reason != VNIC_RESET_CHANGE_PARAM)
+	    adapter->reset_reason != VNIC_RESET_CHANGE_PARAM) {
 		call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, netdev);
+		call_netdevice_notifiers(NETDEV_RESEND_IGMP, netdev);
+	}
 
 	netif_carrier_on(netdev);