- Use klist iterator in device_for_each_child(), making it safe to use for
removing devices.
- Remove unused list_to_dev() function.
- Kills all usage of devices_subsys.rwsem.
Signed-off-by: Patrick Mochel <mochel@digitalimplant.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
{
kobj_set_kset_s(dev, devices_subsys);
kobject_init(&dev->kobj);
{
kobj_set_kset_s(dev, devices_subsys);
kobject_init(&dev->kobj);
- INIT_LIST_HEAD(&dev->node);
- INIT_LIST_HEAD(&dev->children);
+ klist_init(&dev->klist_children);
INIT_LIST_HEAD(&dev->dma_pools);
init_MUTEX(&dev->sem);
}
INIT_LIST_HEAD(&dev->dma_pools);
init_MUTEX(&dev->sem);
}
goto PMError;
if ((error = bus_add_device(dev)))
goto BusError;
goto PMError;
if ((error = bus_add_device(dev)))
goto BusError;
- down_write(&devices_subsys.rwsem);
- list_add_tail(&dev->node, &parent->children);
- up_write(&devices_subsys.rwsem);
+ klist_add_tail(&parent->klist_children, &dev->knode_parent);
/* notify platform of device entry */
if (platform_notify)
/* notify platform of device entry */
if (platform_notify)
{
struct device * parent = dev->parent;
{
struct device * parent = dev->parent;
- down_write(&devices_subsys.rwsem);
- list_del_init(&dev->node);
- up_write(&devices_subsys.rwsem);
+ klist_remove(&dev->knode_parent);
/* Notify the platform of the removal, in case they
* need to do anything...
/* Notify the platform of the removal, in case they
* need to do anything...
+static struct device * next_device(struct klist_iter * i)
+{
+ struct klist_node * n = klist_next(i);
+ return n ? container_of(n, struct device, knode_parent) : NULL;
+}
+
/**
* device_for_each_child - device child iterator.
* @dev: parent struct device.
/**
* device_for_each_child - device child iterator.
* @dev: parent struct device.
* We check the return of @fn each time. If it returns anything
* other than 0, we break out and return that value.
*/
* We check the return of @fn each time. If it returns anything
* other than 0, we break out and return that value.
*/
-int device_for_each_child(struct device * dev, void * data,
+int device_for_each_child(struct device * parent, void * data,
int (*fn)(struct device *, void *))
{
int (*fn)(struct device *, void *))
{
struct device * child;
int error = 0;
struct device * child;
int error = 0;
- down_read(&devices_subsys.rwsem);
- list_for_each_entry(child, &dev->children, node) {
- if((error = fn(child, data)))
- break;
- }
- up_read(&devices_subsys.rwsem);
+ klist_iter_init(&parent->klist_children, &i);
+ while ((child = next_device(&i)) && !error)
+ error = fn(child, data);
+ klist_iter_exit(&i);
- struct list_head node; /* node in sibling list */
- struct list_head children;
+ struct klist klist_children;
+ struct klist_node knode_parent; /* node in sibling list */
struct klist_node knode_driver;
struct klist_node knode_bus;
struct device * parent;
struct klist_node knode_driver;
struct klist_node knode_bus;
struct device * parent;
void (*release)(struct device * dev);
};
void (*release)(struct device * dev);
};
-static inline struct device *
-list_to_dev(struct list_head *node)
-{
- return list_entry(node, struct device, node);
-}
-
static inline void *
dev_get_drvdata (struct device *dev)
{
static inline void *
dev_get_drvdata (struct device *dev)
{