*
* Copyright (c) 2002-3 Patrick Mochel
* Copyright (c) 2002-3 Open Source Development Labs
- *
+ *
* This file is released under the GPLv2
*
*/
* sysfs bindings for devices.
*/
-#define to_dev(obj) container_of(obj,struct device,kobj)
-#define to_dev_attr(_attr) container_of(_attr,struct device_attribute,attr)
+#define to_dev(obj) container_of(obj, struct device, kobj)
+#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
extern struct attribute * dev_default_attrs[];
ssize_t ret = 0;
if (dev_attr->show)
- ret = dev_attr->show(dev,buf);
+ ret = dev_attr->show(dev, buf);
return ret;
}
static ssize_t
-dev_attr_store(struct kobject * kobj, struct attribute * attr,
+dev_attr_store(struct kobject * kobj, struct attribute * attr,
const char * buf, size_t count)
{
struct device_attribute * dev_attr = to_dev_attr(attr);
ssize_t ret = 0;
if (dev_attr->store)
- ret = dev_attr->store(dev,buf,count);
+ ret = dev_attr->store(dev, buf, count);
return ret;
}
{
int error = 0;
if (get_device(dev)) {
- error = sysfs_create_file(&dev->kobj,&attr->attr);
+ error = sysfs_create_file(&dev->kobj, &attr->attr);
put_device(dev);
}
return error;
void device_remove_file(struct device * dev, struct device_attribute * attr)
{
if (get_device(dev)) {
- sysfs_remove_file(&dev->kobj,&attr->attr);
+ sysfs_remove_file(&dev->kobj, &attr->attr);
put_device(dev);
}
}
* @dev: device.
*
* This prepares the device for use by other layers,
- * including adding it to the device hierarchy.
+ * including adding it to the device hierarchy.
* It is the first half of device_register(), if called by
* that, though it can also be called separately, so one
* may use @dev's fields (e.g. the refcount).
void device_initialize(struct device *dev)
{
- kobj_set_kset_s(dev,devices_subsys);
+ kobj_set_kset_s(dev, devices_subsys);
kobject_init(&dev->kobj);
INIT_LIST_HEAD(&dev->node);
INIT_LIST_HEAD(&dev->children);
* device_add - add device to device hierarchy.
* @dev: device.
*
- * This is part 2 of device_register(), though may be called
+ * This is part 2 of device_register(), though may be called
* separately _iff_ device_initialize() has been called separately.
*
* This adds it to the kobject hierarchy via kobject_add(), adds it
pr_debug("DEV: registering device: ID = '%s'\n", dev->bus_id);
/* first, register with generic layer. */
- kobject_set_name(&dev->kobj,dev->bus_id);
+ kobject_set_name(&dev->kobj, dev->bus_id);
if (parent)
dev->kobj.parent = &parent->kobj;
goto BusError;
down_write(&devices_subsys.rwsem);
if (parent)
- list_add_tail(&dev->node,&parent->children);
+ list_add_tail(&dev->node, &parent->children);
up_write(&devices_subsys.rwsem);
/* notify platform of device entry */
BusError:
device_pm_remove(dev);
PMError:
- kobject_unregister(&dev->kobj);
+ kobject_del(&dev->kobj);
Error:
if (parent)
put_device(parent);
* @dev: pointer to the device structure
*
* This happens in two clean steps - initialize the device
- * and add it to the system. The two steps can be called
- * separately, but this is the easiest and most common.
- * I.e. you should only call the two helpers separately if
+ * and add it to the system. The two steps can be called
+ * separately, but this is the easiest and most common.
+ * I.e. you should only call the two helpers separately if
* have a clearly defined need to use and refcount the device
* before it is added to the hierarchy.
*/
* device_del - delete device from system.
* @dev: device.
*
- * This is the first part of the device unregistration
+ * This is the first part of the device unregistration
* sequence. This removes the device from the lists we control
- * from here, has it removed from the other driver model
+ * from here, has it removed from the other driver model
* subsystems it was added to in device_add(), and removes it
* from the kobject hierarchy.
*
- * NOTE: this should be called manually _iff_ device_add() was
+ * NOTE: this should be called manually _iff_ device_add() was
* also called manually.
*/
* we remove it from all the subsystems with device_del(), then
* we decrement the reference count via put_device(). If that
* is the final reference count, the device will be cleaned up
- * via device_release() above. Otherwise, the structure will
+ * via device_release() above. Otherwise, the structure will
* stick around until the final reference to the device is dropped.
*/
void device_unregister(struct device * dev)
* @fn: function to be called for each device.
*
* Iterate over @dev's child devices, and call @fn for each,
- * passing it @data.
+ * passing it @data.
*
* We check the return of @fn each time. If it returns anything
* other than 0, we break out and return that value.
int error = 0;
down_read(&devices_subsys.rwsem);
- list_for_each_entry(child,&dev->children,node) {
- if((error = fn(child,data)))
+ list_for_each_entry(child, &dev->children, node) {
+ if((error = fn(child, data)))
break;
}
up_read(&devices_subsys.rwsem);
return error;
}
+/**
+ * device_find - locate device on a bus by name.
+ * @name: name of the device.
+ * @bus: bus to scan for the device.
+ *
+ * Call kset_find_obj() to iterate over list of devices on
+ * a bus to find device by name. Return device if found.
+ *
+ * Note that kset_find_obj increments device's reference count.
+ */
struct device *device_find(const char *name, struct bus_type *bus)
{
struct kobject *k = kset_find_obj(&bus->devices, name);
git://git.onelab.eu / linux-2.6.git / blobdiff