From: James Smart <jsmart2021@gmail.com>
Date: Wed, 14 Aug 2019 16:57:00 -0700
Subject: scsi: lpfc: Fix Max Frame Size value shown in fdmishow output
Git-commit: f98b2fd796d0f3dfa472e1ff977d38180301c982
Patch-mainline: v5.4-rc1
References: bsc#1146215

Max Frame Size value is shown as 34816 in fdmishow from Switch.

The driver uses bbRcvSize in common service param which is obtained from
the READ_SPARM mailbox command. The bbRcvSize field which is displayed is a
three nibble field but the driver is printing a full four nibbles.

Fix by masking off the upper nibble.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 drivers/scsi/lpfc/lpfc_ct.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index c52d5edf4d44..1717f3403a97 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -2552,7 +2552,7 @@ lpfc_fdmi_port_attr_max_frame(struct lpfc_vport *vport,
 	ae = (struct lpfc_fdmi_attr_entry *)&ad->AttrValue;
 
 	hsp = (struct serv_parm *)&vport->fc_sparam;
-	ae->un.AttrInt = (((uint32_t) hsp->cmn.bbRcvSizeMsb) << 8) |
+	ae->un.AttrInt = (((uint32_t) hsp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
 			  (uint32_t) hsp->cmn.bbRcvSizeLsb;
 	ae->un.AttrInt = cpu_to_be32(ae->un.AttrInt);
 	size = FOURBYTES + sizeof(uint32_t);
-- 
2.16.4