scsi: hisi_sas: only reset link for PHY_FUNC_LINK_RESET

We currently do a hard reset for a link reset. Change this to do a link
reset only.
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/hisi_sas/hisi_sas_main.c

@@ -659,8 +659,9 @@ static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
 		break;
 
 	case PHY_FUNC_LINK_RESET:
+		hisi_hba->hw->phy_disable(hisi_hba, phy_no);
+		msleep(100);
 		hisi_hba->hw->phy_enable(hisi_hba, phy_no);
-		hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
 		break;
 
 	case PHY_FUNC_DISABLE: