driver core: create a private portion of struct device
[linux-2.6.git] / drivers / base / core.c
index 059966b..16d8599 100644 (file)
@@ -109,6 +109,7 @@ static struct sysfs_ops dev_sysfs_ops = {
 static void device_release(struct kobject *kobj)
 {
        struct device *dev = to_dev(kobj);
+       struct device_private *p = dev->p;
 
        if (dev->release)
                dev->release(dev);
@@ -120,6 +121,7 @@ static void device_release(struct kobject *kobj)
                WARN(1, KERN_ERR "Device '%s' does not have a release() "
                        "function, it is broken and must be fixed.\n",
                        dev_name(dev));
+       kfree(p);
 }
 
 static struct kobj_type device_ktype = {
@@ -859,6 +861,13 @@ int device_add(struct device *dev)
        if (!dev)
                goto done;
 
+       dev->p = kzalloc(sizeof(*dev->p), GFP_KERNEL);
+       if (!dev->p) {
+               error = -ENOMEM;
+               goto done;
+       }
+       dev->p->device = dev;
+
        /*
         * for statically allocated devices, which should all be converted
         * some day, we need to initialize the name. We prevent reading back