if (dev->release)
dev->release(dev);
+ else if (dev->type && dev->type->release)
+ dev->type->release(dev);
else if (dev->class && dev->class->dev_release)
dev->class->dev_release(dev);
else {
"MINOR=%u", MINOR(dev->devt));
}
- /* add bus name (same as SUBSYSTEM, deprecated) */
- if (dev->bus)
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVBUS=%s", dev->bus->name);
-
- /* add driver name (PHYSDEV* values are deprecated)*/
- if (dev->driver) {
+ if (dev->driver)
add_uevent_var(envp, num_envp, &i,
buffer, buffer_size, &length,
"DRIVER=%s", dev->driver->name);
+
+#ifdef CONFIG_SYSFS_DEPRECATED
+ if (dev->class) {
+ struct device *parent = dev->parent;
+
+ /* find first bus device in parent chain */
+ while (parent && !parent->bus)
+ parent = parent->parent;
+ if (parent && parent->bus) {
+ const char *path;
+
+ path = kobject_get_path(&parent->kobj, GFP_KERNEL);
+ add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "PHYSDEVPATH=%s", path);
+ kfree(path);
+
+ add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "PHYSDEVBUS=%s", parent->bus->name);
+
+ if (parent->driver)
+ add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "PHYSDEVDRIVER=%s", parent->driver->name);
+ }
+ } else if (dev->bus) {
add_uevent_var(envp, num_envp, &i,
buffer, buffer_size, &length,
- "PHYSDEVDRIVER=%s", dev->driver->name);
+ "PHYSDEVBUS=%s", dev->bus->name);
+
+ if (dev->driver)
+ add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "PHYSDEVDRIVER=%s", dev->driver->name);
}
+#endif
/* terminate, set to next free slot, shrink available space */
envp[i] = NULL;
if (dev->bus && dev->bus->uevent) {
/* have the bus specific function add its stuff */
retval = dev->bus->uevent(dev, envp, num_envp, buffer, buffer_size);
- if (retval) {
- pr_debug ("%s - uevent() returned %d\n",
+ if (retval)
+ pr_debug ("%s: bus uevent() returned %d\n",
__FUNCTION__, retval);
- }
}
if (dev->class && dev->class->dev_uevent) {
/* have the class specific function add its stuff */
retval = dev->class->dev_uevent(dev, envp, num_envp, buffer, buffer_size);
- if (retval) {
- pr_debug("%s - dev_uevent() returned %d\n",
- __FUNCTION__, retval);
- }
+ if (retval)
+ pr_debug("%s: class uevent() returned %d\n",
+ __FUNCTION__, retval);
+ }
+
+ if (dev->type && dev->type->uevent) {
+ /* have the device type specific fuction add its stuff */
+ retval = dev->type->uevent(dev, envp, num_envp, buffer, buffer_size);
+ if (retval)
+ pr_debug("%s: dev_type uevent() returned %d\n",
+ __FUNCTION__, retval);
}
return retval;
static int device_add_attrs(struct device *dev)
{
struct class *class = dev->class;
+ struct device_type *type = dev->type;
int error = 0;
int i;
- if (!class)
- return 0;
-
- if (class->dev_attrs) {
+ if (class && class->dev_attrs) {
for (i = 0; attr_name(class->dev_attrs[i]); i++) {
error = device_create_file(dev, &class->dev_attrs[i]);
if (error)
break;
}
+ if (error)
+ while (--i >= 0)
+ device_remove_file(dev, &class->dev_attrs[i]);
}
- if (error)
- while (--i >= 0)
- device_remove_file(dev, &class->dev_attrs[i]);
+
+ if (type && type->attrs) {
+ for (i = 0; attr_name(type->attrs[i]); i++) {
+ error = device_create_file(dev, &type->attrs[i]);
+ if (error)
+ break;
+ }
+ if (error)
+ while (--i >= 0)
+ device_remove_file(dev, &type->attrs[i]);
+ }
+
return error;
}
static void device_remove_attrs(struct device *dev)
{
struct class *class = dev->class;
+ struct device_type *type = dev->type;
int i;
- if (!class)
- return;
-
- if (class->dev_attrs) {
+ if (class && class->dev_attrs) {
for (i = 0; attr_name(class->dev_attrs[i]); i++)
device_remove_file(dev, &class->dev_attrs[i]);
}
+
+ if (type && type->attrs) {
+ for (i = 0; attr_name(type->attrs[i]); i++)
+ device_remove_file(dev, &type->attrs[i]);
+ }
}
INIT_LIST_HEAD(&dev->node);
init_MUTEX(&dev->sem);
device_init_wakeup(dev, 0);
+ set_dev_node(dev, -1);
}
-static int virtual_device_parent(struct device *dev)
+#ifdef CONFIG_SYSFS_DEPRECATED
+static struct kobject * get_device_parent(struct device *dev,
+ struct device *parent)
+{
+ /* Set the parent to the class, not the parent device */
+ /* this keeps sysfs from having a symlink to make old udevs happy */
+ if (dev->class)
+ return &dev->class->subsys.kset.kobj;
+ else if (parent)
+ return &parent->kobj;
+
+ return NULL;
+}
+#else
+static struct kobject * virtual_device_parent(struct device *dev)
{
if (!dev->class)
- return -ENODEV;
+ return ERR_PTR(-ENODEV);
if (!dev->class->virtual_dir) {
static struct kobject *virtual_dir = NULL;
dev->class->virtual_dir = kobject_add_dir(virtual_dir, dev->class->name);
}
- dev->kobj.parent = dev->class->virtual_dir;
+ return dev->class->virtual_dir;
+}
+
+static struct kobject * get_device_parent(struct device *dev,
+ struct device *parent)
+{
+ /* if this is a class device, and has no parent, create one */
+ if ((dev->class) && (parent == NULL)) {
+ return virtual_device_parent(dev);
+ } else if (parent)
+ return &parent->kobj;
+ return NULL;
+}
+
+#endif
+static int setup_parent(struct device *dev, struct device *parent)
+{
+ struct kobject *kobj;
+ kobj = get_device_parent(dev, parent);
+ if (IS_ERR(kobj))
+ return PTR_ERR(kobj);
+ if (kobj)
+ dev->kobj.parent = kobj;
return 0;
}
if (!dev || !strlen(dev->bus_id))
goto Error;
- /* if this is a class device, and has no parent, create one */
- if ((dev->class) && (dev->parent == NULL)) {
- error = virtual_device_parent(dev);
- if (error)
- goto Error;
- }
+ pr_debug("DEV: registering device: ID = '%s'\n", dev->bus_id);
parent = get_device(dev->parent);
- pr_debug("DEV: registering device: ID = '%s'\n", dev->bus_id);
+ error = setup_parent(dev, parent);
+ if (error)
+ goto Error;
/* first, register with generic layer. */
kobject_set_name(&dev->kobj, "%s", dev->bus_id);
- if (parent)
- dev->kobj.parent = &parent->kobj;
-
- if ((error = kobject_add(&dev->kobj)))
+ error = kobject_add(&dev->kobj);
+ if (error)
goto Error;
/* notify platform of device entry */
if (dev->class) {
sysfs_create_link(&dev->kobj, &dev->class->subsys.kset.kobj,
"subsystem");
- sysfs_create_link(&dev->class->subsys.kset.kobj, &dev->kobj,
- dev->bus_id);
+ /* If this is not a "fake" compatible device, then create the
+ * symlink from the class to the device. */
+ if (dev->kobj.parent != &dev->class->subsys.kset.kobj)
+ sysfs_create_link(&dev->class->subsys.kset.kobj,
+ &dev->kobj, dev->bus_id);
+#ifdef CONFIG_SYSFS_DEPRECATED
if (parent) {
- sysfs_create_link(&dev->kobj, &dev->parent->kobj, "device");
- class_name = make_class_name(dev->class->name, &dev->kobj);
- sysfs_create_link(&dev->parent->kobj, &dev->kobj, class_name);
+ sysfs_create_link(&dev->kobj, &dev->parent->kobj,
+ "device");
+ class_name = make_class_name(dev->class->name,
+ &dev->kobj);
+ if (class_name)
+ sysfs_create_link(&dev->parent->kobj,
+ &dev->kobj, class_name);
}
+#endif
}
if ((error = device_add_attrs(dev)))
goto PMError;
if ((error = bus_add_device(dev)))
goto BusError;
- kobject_uevent(&dev->kobj, KOBJ_ADD);
+ if (!dev->uevent_suppress)
+ kobject_uevent(&dev->kobj, KOBJ_ADD);
if ((error = bus_attach_device(dev)))
goto AttachError;
if (parent)
void device_del(struct device * dev)
{
struct device * parent = dev->parent;
- char *class_name = NULL;
struct class_interface *class_intf;
if (parent)
}
if (dev->class) {
sysfs_remove_link(&dev->kobj, "subsystem");
- sysfs_remove_link(&dev->class->subsys.kset.kobj, dev->bus_id);
- class_name = make_class_name(dev->class->name, &dev->kobj);
+ /* If this is not a "fake" compatible device, remove the
+ * symlink from the class to the device. */
+ if (dev->kobj.parent != &dev->class->subsys.kset.kobj)
+ sysfs_remove_link(&dev->class->subsys.kset.kobj,
+ dev->bus_id);
+#ifdef CONFIG_SYSFS_DEPRECATED
if (parent) {
+ char *class_name = make_class_name(dev->class->name,
+ &dev->kobj);
+ if (class_name)
+ sysfs_remove_link(&dev->parent->kobj,
+ class_name);
+ kfree(class_name);
sysfs_remove_link(&dev->kobj, "device");
- sysfs_remove_link(&dev->parent->kobj, class_name);
}
- kfree(class_name);
+#endif
+
down(&dev->class->sem);
/* notify any interfaces that the device is now gone */
list_for_each_entry(class_intf, &dev->class->interfaces, node)
device_remove_file(dev, &dev->uevent_attr);
device_remove_groups(dev);
device_remove_attrs(dev);
+ bus_remove_device(dev);
/* Notify the platform of the removal, in case they
* need to do anything...
if (dev->bus)
blocking_notifier_call_chain(&dev->bus->bus_notifier,
BUS_NOTIFY_DEL_DEVICE, dev);
- bus_remove_device(dev);
device_pm_remove(dev);
kobject_uevent(&dev->kobj, KOBJ_REMOVE);
kobject_del(&dev->kobj);
return error;
}
+/**
+ * device_find_child - device iterator for locating a particular device.
+ * @parent: parent struct device
+ * @data: Data to pass to match function
+ * @match: Callback function to check device
+ *
+ * This is similar to the device_for_each_child() function above, but it
+ * returns a reference to a device that is 'found' for later use, as
+ * determined by the @match callback.
+ *
+ * The callback should return 0 if the device doesn't match and non-zero
+ * if it does. If the callback returns non-zero and a reference to the
+ * current device can be obtained, this function will return to the caller
+ * and not iterate over any more devices.
+ */
+struct device * device_find_child(struct device *parent, void *data,
+ int (*match)(struct device *, void *))
+{
+ struct klist_iter i;
+ struct device *child;
+
+ if (!parent)
+ return NULL;
+
+ klist_iter_init(&parent->klist_children, &i);
+ while ((child = next_device(&i)))
+ if (match(child, data) && get_device(child))
+ break;
+ klist_iter_exit(&i);
+ return child;
+}
+
int __init devices_init(void)
{
return subsystem_register(&devices_subsys);
}
EXPORT_SYMBOL_GPL(device_for_each_child);
+EXPORT_SYMBOL_GPL(device_find_child);
EXPORT_SYMBOL_GPL(device_initialize);
EXPORT_SYMBOL_GPL(device_add);
pr_debug("DEVICE: renaming '%s' to '%s'\n", dev->bus_id, new_name);
+#ifdef CONFIG_SYSFS_DEPRECATED
if ((dev->class) && (dev->parent))
old_class_name = make_class_name(dev->class->name, &dev->kobj);
+#endif
if (dev->class) {
old_symlink_name = kmalloc(BUS_ID_SIZE, GFP_KERNEL);
error = kobject_rename(&dev->kobj, new_name);
+#ifdef CONFIG_SYSFS_DEPRECATED
if (old_class_name) {
new_class_name = make_class_name(dev->class->name, &dev->kobj);
if (new_class_name) {
sysfs_remove_link(&dev->parent->kobj, old_class_name);
}
}
+#endif
+
if (dev->class) {
sysfs_remove_link(&dev->class->subsys.kset.kobj,
old_symlink_name);
return error;
}
+
+
+static int device_move_class_links(struct device *dev,
+ struct device *old_parent,
+ struct device *new_parent)
+{
+#ifdef CONFIG_SYSFS_DEPRECATED
+ int error;
+ char *class_name;
+
+ class_name = make_class_name(dev->class->name, &dev->kobj);
+ if (!class_name) {
+ error = -ENOMEM;
+ goto out;
+ }
+ if (old_parent) {
+ sysfs_remove_link(&dev->kobj, "device");
+ sysfs_remove_link(&old_parent->kobj, class_name);
+ }
+ if (new_parent) {
+ error = sysfs_create_link(&dev->kobj, &new_parent->kobj,
+ "device");
+ if (error)
+ goto out;
+ error = sysfs_create_link(&new_parent->kobj, &dev->kobj,
+ class_name);
+ if (error)
+ sysfs_remove_link(&dev->kobj, "device");
+ }
+ else
+ error = 0;
+out:
+ kfree(class_name);
+ return error;
+#else
+ return 0;
+#endif
+}
+
+/**
+ * device_move - moves a device to a new parent
+ * @dev: the pointer to the struct device to be moved
+ * @new_parent: the new parent of the device (can by NULL)
+ */
+int device_move(struct device *dev, struct device *new_parent)
+{
+ int error;
+ struct device *old_parent;
+ struct kobject *new_parent_kobj;
+
+ dev = get_device(dev);
+ if (!dev)
+ return -EINVAL;
+
+ new_parent = get_device(new_parent);
+ new_parent_kobj = get_device_parent (dev, new_parent);
+ if (IS_ERR(new_parent_kobj)) {
+ error = PTR_ERR(new_parent_kobj);
+ put_device(new_parent);
+ goto out;
+ }
+ pr_debug("DEVICE: moving '%s' to '%s'\n", dev->bus_id,
+ new_parent ? new_parent->bus_id : "<NULL>");
+ error = kobject_move(&dev->kobj, new_parent_kobj);
+ if (error) {
+ put_device(new_parent);
+ goto out;
+ }
+ old_parent = dev->parent;
+ dev->parent = new_parent;
+ if (old_parent)
+ klist_remove(&dev->knode_parent);
+ if (new_parent)
+ klist_add_tail(&dev->knode_parent, &new_parent->klist_children);
+ if (!dev->class)
+ goto out_put;
+ error = device_move_class_links(dev, old_parent, new_parent);
+ if (error) {
+ /* We ignore errors on cleanup since we're hosed anyway... */
+ device_move_class_links(dev, new_parent, old_parent);
+ if (!kobject_move(&dev->kobj, &old_parent->kobj)) {
+ if (new_parent)
+ klist_remove(&dev->knode_parent);
+ if (old_parent)
+ klist_add_tail(&dev->knode_parent,
+ &old_parent->klist_children);
+ }
+ put_device(new_parent);
+ goto out;
+ }
+out_put:
+ put_device(old_parent);
+out:
+ put_device(dev);
+ return error;
+}
+
+EXPORT_SYMBOL_GPL(device_move);
projects / linux-2.6-omap-h63xx.git / blobdiff