[S390] cio: Add shutdown callback for ccwgroup.

This intendeds to make proper shutdown of qeth devices easier.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 14 insertions, 0 deletions

diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 3964056a9a47..03914fa81174 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -391,12 +391,24 @@ ccwgroup_remove (struct device *dev)
         return 0;
 }
 
+static void ccwgroup_shutdown(struct device *dev)
+{
+        struct ccwgroup_device *gdev;
+        struct ccwgroup_driver *gdrv;
+
+        gdev = to_ccwgroupdev(dev);
+        gdrv = to_ccwgroupdrv(dev->driver);
+        if (gdrv && gdrv->shutdown)
+                gdrv->shutdown(gdev);
+}
+
 static struct bus_type ccwgroup_bus_type = {
         .name   = "ccwgroup",
         .match  = ccwgroup_bus_match,
         .uevent = ccwgroup_uevent,
         .probe  = ccwgroup_probe,
         .remove = ccwgroup_remove,
+        .shutdown = ccwgroup_shutdown,
 };
 
 /**
diff --git a/include/asm-s390/ccwgroup.h b/include/asm-s390/ccwgroup.h
index 7109c7cab87e..289053ef5e60 100644
--- a/include/asm-s390/ccwgroup.h
+++ b/include/asm-s390/ccwgroup.h
@@ -37,6 +37,7 @@ struct ccwgroup_device {
  * @remove: function called on remove
  * @set_online: function called when device is set online
  * @set_offline: function called when device is set offline
+ * @shutdown: function called when device is shut down
  * @driver: embedded driver structure
  */
 struct ccwgroup_driver {
@@ -49,6 +50,7 @@ struct ccwgroup_driver {
         void (*remove) (struct ccwgroup_device *);
         int (*set_online) (struct ccwgroup_device *);
         int (*set_offline) (struct ccwgroup_device *);
+        void (*shutdown)(struct ccwgroup_device *);
 
         struct device_driver driver;
 };