[SCSI] qla2xxx: T10 DIF Type 2 support

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 9a82c34..987c5b0 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -399,7 +399,10 @@
 	host->can_queue = base_vha->req->length + 128;
 	host->this_id = 255;
 	host->cmd_per_lun = 3;
-	host->max_cmd_len = MAX_CMDSZ;
+	if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif)
+		host->max_cmd_len = 32;
+	else
+		host->max_cmd_len = MAX_CMDSZ;
 	host->max_channel = MAX_BUSES - 1;
 	host->max_lun = MAX_LUNS;
 	host->unique_id = host->host_no;