This is a note to let you know that I've just added the patch titled scsi: qla2xxx: Ignore PORT UPDATE after N2N PLOGI to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: scsi-qla2xxx-ignore-port-update-after-n2n-plogi.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 18a23fde804af1606eea478173b5fb17c8e4fc28 Author: Roman Bolshakov <r.bolshakov@xxxxxxxxx> Date: Mon Nov 25 19:57:01 2019 +0300 scsi: qla2xxx: Ignore PORT UPDATE after N2N PLOGI [ Upstream commit af22f0c7b052c5c203207f1e5ebd6aa65f87c538 ] PORT UPDATE asynchronous event is generated on the host that issues PLOGI ELS (in the case of higher WWPN). In that case, the event shouldn't be handled as it sets unwanted DPC flags (i.e. LOOP_RESYNC_NEEDED) that trigger link flap. Ignore the event if the host has higher WWPN, but handle otherwise. Cc: Quinn Tran <qutran@xxxxxxxxxxx> Link: https://lore.kernel.org/r/20191125165702.1013-13-r.bolshakov@xxxxxxxxx Acked-by: Himanshu Madhani <hmadhani@xxxxxxxxxxx> Reviewed-by: Hannes Reinecke <hare@xxxxxxx> Tested-by: Hannes Reinecke <hare@xxxxxxx> Signed-off-by: Roman Bolshakov <r.bolshakov@xxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index b01f69dd4b28..abef3b29fa10 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -3871,6 +3871,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha, vha->d_id.b24 = 0; vha->d_id.b.al_pa = 1; ha->flags.n2n_bigger = 1; + ha->flags.n2n_ae = 0; id.b.al_pa = 2; ql_dbg(ql_dbg_async, vha, 0x5075, @@ -3881,6 +3882,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha, "Format 1: Remote login - Waiting for WWPN %8phC.\n", rptid_entry->u.f1.port_name); ha->flags.n2n_bigger = 0; + ha->flags.n2n_ae = 1; } qla24xx_post_newsess_work(vha, &id, rptid_entry->u.f1.port_name, @@ -3892,7 +3894,6 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha, /* if our portname is higher then initiate N2N login */ set_bit(N2N_LOGIN_NEEDED, &vha->dpc_flags); - ha->flags.n2n_ae = 1; return; break; case TOPO_FL: