From: Luo Jiaxing <luojiaxing@huawei.com>
Date: Mon, 24 Sep 2018 23:06:28 +0800
Subject: scsi: hisi_sas: Feed back linkrate(max/min) when re-attached
Patch-mainline: v4.20-rc1
Git-commit: 5a54691f874ab29ec82f08bc6936866a3ccdaa91
References: FATE#326253

At directly attached situation, if the user modifies the sysfs interface
of maximum_linkrate and minimum_linkrate to renegotiate the linkrate
between SAS controller and target, the value of both files mentioned
above should have change to user setting after renegotiate is over, but
it remains unchanged.

To fix this bug, maximum_linkrate and minimum_linkrate will be directly
fed back to relevant sas_phy structure.

Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
 drivers/scsi/hisi_sas/hisi_sas_main.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -905,6 +905,9 @@ static void hisi_sas_phy_set_linkrate(st
 	_r.maximum_linkrate = max;
 	_r.minimum_linkrate = min;
 
+	sas_phy->phy->maximum_linkrate = max;
+	sas_phy->phy->minimum_linkrate = min;
+
 	hisi_hba->hw->phy_disable(hisi_hba, phy_no);
 	msleep(100);
 	hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r);