[S390] pm: zfcp driver power management callbacks

Signed-off-by: Martin Petermann <martin.petermann@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index b2fe5cdbcae..d9da5c42ccb 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -13,6 +13,36 @@
 
 #define ZFCP_MODEL_PRIV 0x4
 
+static int zfcp_ccw_suspend(struct ccw_device *cdev)
+
+{
+        struct zfcp_adapter *adapter = dev_get_drvdata(&cdev->dev);
+
+        down(&zfcp_data.config_sema);
+
+        zfcp_erp_adapter_shutdown(adapter, 0, "ccsusp1", NULL);
+        zfcp_erp_wait(adapter);
+
+        up(&zfcp_data.config_sema);
+
+        return 0;
+}
+
+static int zfcp_ccw_activate(struct ccw_device *cdev)
+
+{
+        struct zfcp_adapter *adapter = dev_get_drvdata(&cdev->dev);
+
+        zfcp_erp_modify_adapter_status(adapter, "ccresu1", NULL,
+                                       ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
+        zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
+                                "ccresu2", NULL);
+        zfcp_erp_wait(adapter);
+        flush_work(&adapter->scan_work);
+
+        return 0;
+}
+
 static struct ccw_device_id zfcp_ccw_device_id[] = {
         { CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, 0x3) },
         { CCW_DEVICE_DEVTYPE(0x1731, 0x3, 0x1732, ZFCP_MODEL_PRIV) },
@@ -227,6 +257,9 @@ static struct ccw_driver zfcp_ccw_driver = {
         .set_offline = zfcp_ccw_set_offline,
         .notify      = zfcp_ccw_notify,
         .shutdown    = zfcp_ccw_shutdown,
+        .freeze      = zfcp_ccw_suspend,
+        .thaw        = zfcp_ccw_activate,
+        .restore     = zfcp_ccw_activate,
 };
 
 /**