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From 2a6ba2926dce7aa598e3800f6395a51ea5ca3cea Mon Sep 17 00:00:00 2001
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From: Himanshu Madhani <hmadhani@redhat.com>
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Date: Thu, 1 Aug 2019 15:56:11 -0400
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Subject: [PATCH 111/124] [scsi] scsi: qla2xxx: Allow NVMe IO to resume with
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short cable pull
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Message-id: <20190801155618.12650-112-hmadhani@redhat.com>
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Patchwork-id: 267897
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O-Subject: [RHEL 7.8 e-stor PATCH 111/118] scsi: qla2xxx: Allow NVMe IO to resume with short cable pull
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Bugzilla: 1729270
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RH-Acked-by: Jarod Wilson <jarod@redhat.com>
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RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
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From: Quinn Tran <qutran@marvell.com>
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Bugzilla 1729270
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Current driver report dev_loss_tmo to 0 for NVMe devices with short cable
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pull. This causes NVMe controller to be freed along with NVMe namespace.
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The side affect is IO would stop. By not setting dev_loss_tmo to 0, NVMe
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namespace would stay until cable is plugged back in. This allows IO to
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resume afterward.
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[mkp: commit desc]
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Signed-off-by: Arun Easi <aeasi@marvell.com>
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Signed-off-by: Quinn Tran <qutran@marvell.com>
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Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
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Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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(cherry picked from commit 727e9a39a33b1547e4b2091dd79b5596de451810)
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Signed-off-by: Himanshu Madhani <hmadhani@redhat.com>
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Signed-off-by: Jan Stancek <jstancek@redhat.com>
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---
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drivers/scsi/qla2xxx/qla_nvme.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
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index 74fbe38eaae2..ad406511f2ec 100644
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--- a/drivers/scsi/qla2xxx/qla_nvme.c
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+++ b/drivers/scsi/qla2xxx/qla_nvme.c
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@@ -671,7 +671,9 @@ void qla_nvme_unregister_remote_port(struct fc_port *fcport)
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"%s: unregister remoteport on %p %8phN\n",
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__func__, fcport, fcport->port_name);
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- nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
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+ if (test_bit(PFLG_DRIVER_REMOVING, &fcport->vha->pci_flags))
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+ nvme_fc_set_remoteport_devloss(fcport->nvme_remote_port, 0);
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+
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init_completion(&fcport->nvme_del_done);
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ret = nvme_fc_unregister_remoteport(fcport->nvme_remote_port);
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if (ret)
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--
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2.13.6
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