driver core: add init_name to struct device

This gives us a way to handle both the bus_id and init_name values being
used for a while during the transition period.

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

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 4004131..d021c98 100644 (file)
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -844,13 +844,19 @@ int device_add(struct device *dev)
 {
        struct device *parent = NULL;
        struct class_interface *class_intf;
-       int error;
+       int error = -EINVAL;
 
        dev = get_device(dev);
-       if (!dev || !strlen(dev->bus_id)) {
-               error = -EINVAL;
-               goto Done;
-       }
+       if (!dev)
+               goto done;
+
+       /* Temporarily support init_name if it is set.
+        * It will override bus_id for now */
+       if (dev->init_name)
+               dev_set_name(dev, "%s", dev->init_name);
+
+       if (!strlen(dev->bus_id))
+               goto done;
 
        pr_debug("device: '%s': %s\n", dev->bus_id, __func__);
 
@@ -919,7 +925,7 @@ int device_add(struct device *dev)
                                class_intf->add_dev(dev, class_intf);
                mutex_unlock(&dev->class->p->class_mutex);
        }
- Done:
+done:
        put_device(dev);
        return error;
  DPMError:
@@ -946,7 +952,7 @@ int device_add(struct device *dev)
        cleanup_device_parent(dev);
        if (parent)
                put_device(parent);
-       goto Done;
+       goto done;
 }
 
 /**

diff --git a/include/linux/device.h b/include/linux/device.h
index a701c1b..4d8372d 100644 (file)
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -358,6 +358,7 @@ struct device {
 
        struct kobject kobj;
        char    bus_id[BUS_ID_SIZE];    /* position on parent bus */
+       const char              *init_name; /* initial name of the device */
        struct device_type      *type;
        unsigned                uevent_suppress:1;