[S390] pm: ctcm driver power management callbacks

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 36 insertions, 1 deletions

diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index 54c4649a493b..222e47394437 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -1,7 +1,7 @@
 /*
  * drivers/s390/net/ctcm_main.c
  *
- * Copyright IBM Corp. 2001, 2007
+ * Copyright IBM Corp. 2001, 2009
  * Author(s):
  *      Original CTC driver(s):
  *              Fritz Elfert (felfert@millenux.com)
@@ -1688,6 +1688,38 @@ static void ctcm_remove_device(struct ccwgroup_device *cgdev)
         put_device(&cgdev->dev);
 }
 
+static int ctcm_pm_suspend(struct ccwgroup_device *gdev)
+{
+        struct ctcm_priv *priv = dev_get_drvdata(&gdev->dev);
+
+        if (gdev->state == CCWGROUP_OFFLINE)
+                return 0;
+        netif_device_detach(priv->channel[READ]->netdev);
+        ctcm_close(priv->channel[READ]->netdev);
+        ccw_device_set_offline(gdev->cdev[1]);
+        ccw_device_set_offline(gdev->cdev[0]);
+        return 0;
+}
+
+static int ctcm_pm_resume(struct ccwgroup_device *gdev)
+{
+        struct ctcm_priv *priv = dev_get_drvdata(&gdev->dev);
+        int rc;
+
+        if (gdev->state == CCWGROUP_OFFLINE)
+                return 0;
+        rc = ccw_device_set_online(gdev->cdev[1]);
+        if (rc)
+                goto err_out;
+        rc = ccw_device_set_online(gdev->cdev[0]);
+        if (rc)
+                goto err_out;
+        ctcm_open(priv->channel[READ]->netdev);
+err_out:
+        netif_device_attach(priv->channel[READ]->netdev);
+        return rc;
+}
+
 static struct ccwgroup_driver ctcm_group_driver = {
         .owner       = THIS_MODULE,
         .name        = CTC_DRIVER_NAME,
@@ -1697,6 +1729,9 @@ static struct ccwgroup_driver ctcm_group_driver = {
         .remove      = ctcm_remove_device,
         .set_online  = ctcm_new_device,
         .set_offline = ctcm_shutdown_device,
+        .freeze      = ctcm_pm_suspend,
+        .thaw        = ctcm_pm_resume,
+        .restore     = ctcm_pm_resume,
 };