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Message-Id: <20201121015134.18872-1-kartilak@cisco.com>
Date:   Fri, 20 Nov 2020 17:51:34 -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: set scsi_set_resid only for underflow

Fix to set scsi_set_resid() only if
FCPIO_ICMND_CMPL_RESID_UNDER is set.

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 | 5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
index 7c5c911b2673..e4d399f41a0a 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		"1.6.0.51"
+#define DRV_VERSION		"1.6.0.52"
 #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 16e66f5b833a..532c3c7ae372 100644
--- a/drivers/scsi/fnic/fnic_scsi.c
+++ b/drivers/scsi/fnic/fnic_scsi.c
@@ -921,10 +921,11 @@ static void fnic_fcpio_icmnd_cmpl_handler(struct fnic *fnic,
 	case FCPIO_SUCCESS:
 		sc->result = (DID_OK << 16) | icmnd_cmpl->scsi_status;
 		xfer_len = scsi_bufflen(sc);
-		scsi_set_resid(sc, icmnd_cmpl->residual);
 
-		if (icmnd_cmpl->flags & FCPIO_ICMND_CMPL_RESID_UNDER)
+		if (icmnd_cmpl->flags & FCPIO_ICMND_CMPL_RESID_UNDER) {
 			xfer_len -= icmnd_cmpl->residual;
+			scsi_set_resid(sc, icmnd_cmpl->residual);
+		}
 
 		if (icmnd_cmpl->scsi_status == SAM_STAT_CHECK_CONDITION)
 			atomic64_inc(&fnic_stats->misc_stats.check_condition);
-- 
2.29.2

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