Driver Core: add nodename callbacks

This adds the nodename callback for struct class, struct device_type and
struct device, to allow drivers to send userspace hints on the device
name and subdirectory that should be used for it.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 4410464b134a..ed4e39f2c423 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -194,6 +194,7 @@ struct class {
         struct kobject                  *dev_kobj;
 
         int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);
+        char *(*nodename)(struct device *dev);
 
         void (*class_release)(struct class *class);
         void (*dev_release)(struct device *dev);
@@ -289,6 +290,7 @@ struct device_type {
         const char *name;
         struct attribute_group **groups;
         int (*uevent)(struct device *dev, struct kobj_uevent_env *env);
+        char *(*nodename)(struct device *dev);
         void (*release)(struct device *dev);
 
         struct dev_pm_ops *pm;
@@ -488,6 +490,7 @@ extern struct device *device_find_child(struct device *dev, void *data,
 extern int device_rename(struct device *dev, char *new_name);
 extern int device_move(struct device *dev, struct device *new_parent,
                        enum dpm_order dpm_order);
+extern const char *device_get_nodename(struct device *dev, const char **tmp);
 
 /*
  * Root device objects for grouping under /sys/devices