From: Chad Dupuis <chad.dupuis@cavium.com>
Date: Wed, 25 Apr 2018 06:08:55 -0700
Subject: scsi: qedf: Check if link is already up when receiving a link up
 event from qed
Git-commit: 3f9de7f0413df53efa47e1571433f0c951d26e46
Patch-mainline: v4.18-rc1
References: bsc#1086317

[mkp: typo]

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---

 drivers/scsi/qedf/qedf_main.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/scsi/qedf/qedf_main.c
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -485,6 +485,11 @@ static void qedf_link_update(void *dev, struct qed_link_output *link)
 	struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 
 	if (link->link_up) {
+		if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
+			QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
+			    "Ignoring link up event as link is already up.\n");
+			return;
+		}
 		QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 		    link->speed / 1000);