[SCSI] qla2xxx: Implement FCP priority tagging for 82xx adapters.

This provides a capability to set a priority in the FCP packet.

Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index ec73cc1..05931e6 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -5642,6 +5642,11 @@
 	if (priority < 0)
 		return QLA_FUNCTION_FAILED;
 
+	if (IS_QLA82XX(vha->hw)) {
+		fcport->fcp_prio = priority & 0xf;
+		return QLA_SUCCESS;
+	}
+
 	ret = qla24xx_set_fcp_prio(vha, fcport->loop_id, priority, mb);
 	if (ret == QLA_SUCCESS) {
 		if (fcport->fcp_prio != priority)
@@ -5650,7 +5655,7 @@
 			    "port_id=%02x%02x%02x.\n", priority,
 			    fcport->loop_id, fcport->d_id.b.domain,
 			    fcport->d_id.b.area, fcport->d_id.b.al_pa);
-		fcport->fcp_prio = priority;
+		fcport->fcp_prio = priority & 0xf;
 	} else
 		ql_dbg(ql_dbg_user, vha, 0x704f,
 		    "Unable to update FCP_CMND priority - ret=0x%x for "