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Subject[patch 20/38] pm: zfcp driver power management callbacks
From: Martin Petermann <martin.petermann@de.ibm.com>

Signed-off-by: Martin Petermann <martin.petermann@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
drivers/s390/scsi/zfcp_ccw.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
Index: linux-2.6/drivers/s390/scsi/zfcp_ccw.c
===================================================================
--- linux-2.6.orig/drivers/s390/scsi/zfcp_ccw.c
+++ linux-2.6/drivers/s390/scsi/zfcp_ccw.c
@@ -199,6 +199,36 @@ static void zfcp_ccw_shutdown(struct ccw
up(&zfcp_data.config_sema);
}

+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, 0x4) }, /* priv. */
@@ -217,6 +247,9 @@ 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,
};

/**
--
blue skies,
Martin.

"Reality continues to ruin my life." - Calvin.



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