[S390] cio: Use helpers instead of container_of().
- Introduce to_cssdriver.
- Use to_xxx instead of container_of where possible.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 81215ef..1d8306c 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -134,6 +134,8 @@
void (*shutdown)(struct subchannel *);
};
+#define to_cssdriver(n) container_of(n, struct css_driver, drv)
+
/*
* all css_drivers have the css_bus_type
*/