linux-kernel - [PATCH] scsi: fnic: Validate io

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Date:   Fri, 20 Nov 2020 18:33:37 -0800
From:   Karan Tilak Kumar <kartilak@...co.com>
To:     satishkh@...co.com
Cc:     sebaddel@...co.com, arulponn@...co.com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Karan Tilak Kumar <kartilak@...co.com>
Subject: [PATCH] scsi: fnic: Validate io_req before others

We need to check for a valid io_req before
we check other data. Also, removing
redundant checks.

Signed-off-by: Karan Tilak Kumar <kartilak@...co.com>
Signed-off-by: Satish Kharat <satishkh@...co.com>
---
 drivers/scsi/fnic/fnic.h      | 2 +-
 drivers/scsi/fnic/fnic_scsi.c | 9 ++++-----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
index e4d399f41a0a..69f373b53132 100644
--- a/drivers/scsi/fnic/fnic.h
+++ b/drivers/scsi/fnic/fnic.h
@@ -39,7 +39,7 @@
 
 #define DRV_NAME		"fnic"
 #define DRV_DESCRIPTION		"Cisco FCoE HBA Driver"
-#define DRV_VERSION		"1.6.0.52"
+#define DRV_VERSION		"1.6.0.53"
 #define PFX			DRV_NAME ": "
 #define DFX                     DRV_NAME "%d: "
 
diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
index 532c3c7ae372..36744968378f 100644
--- a/drivers/scsi/fnic/fnic_scsi.c
+++ b/drivers/scsi/fnic/fnic_scsi.c
@@ -1735,15 +1735,14 @@ void fnic_terminate_rport_io(struct fc_rport *rport)
 			continue;
 		}
 
-		cmd_rport = starget_to_rport(scsi_target(sc->device));
-		if (rport != cmd_rport) {
+		io_req = (struct fnic_io_req *)CMD_SP(sc);
+		if (!io_req) {
 			spin_unlock_irqrestore(io_lock, flags);
 			continue;
 		}
 
-		io_req = (struct fnic_io_req *)CMD_SP(sc);
-
-		if (!io_req || rport != cmd_rport) {
+		cmd_rport = starget_to_rport(scsi_target(sc->device));
+		if (rport != cmd_rport) {
 			spin_unlock_irqrestore(io_lock, flags);
 			continue;
 		}
-- 
2.29.2