From: John Garry <john.garry@huawei.com>
Date: Wed, 22 Mar 2017 17:25:35 +0000 (+0800)
Subject: scsi: hisi_sas: add hisi_sas_clear_nexus_ha()
X-Git-Tag: v4.12-rc1~99^2~122
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8b05ad6a9dbc4306c8eaf0f5269206647ed1ad7e;p=karo-tx-linux.git

scsi: hisi_sas: add hisi_sas_clear_nexus_ha()

Add function for upper-layer to reset controller when all else fails.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 3d63a24fea54..f86263b3bf1c 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1070,6 +1070,13 @@ out:
 	return rc;
 }
 
+static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
+{
+	struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
+
+	return hisi_sas_controller_reset(hisi_hba);
+}
+
 static int hisi_sas_query_task(struct sas_task *task)
 {
 	struct scsi_lun lun;
@@ -1368,6 +1375,7 @@ static struct sas_domain_function_template hisi_sas_transport_ops = {
 	.lldd_I_T_nexus_reset	= hisi_sas_I_T_nexus_reset,
 	.lldd_lu_reset		= hisi_sas_lu_reset,
 	.lldd_query_task	= hisi_sas_query_task,
+	.lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
 	.lldd_port_formed	= hisi_sas_port_formed,
 };