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-rw-r--r--drivers/base/base.h26
-rw-r--r--drivers/base/bus.c40
-rw-r--r--drivers/base/core.c45
-rw-r--r--drivers/base/dd.c13
-rw-r--r--drivers/base/driver.c13
-rw-r--r--include/linux/device.h7
6 files changed, 38 insertions, 106 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h
index b676f8f801f8..0a5f055dffba 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -63,32 +63,6 @@ struct class_private {
#define to_class(obj) \
container_of(obj, struct class_private, class_subsys.kobj)
-/**
- * struct device_private - structure to hold the private to the driver core portions of the device structure.
- *
- * @klist_children - klist containing all children of this device
- * @knode_parent - node in sibling list
- * @knode_driver - node in driver list
- * @knode_bus - node in bus list
- * @device - pointer back to the struct class that this structure is
- * associated with.
- *
- * Nothing outside of the driver core should ever touch these fields.
- */
-struct device_private {
- struct klist klist_children;
- struct klist_node knode_parent;
- struct klist_node knode_driver;
- struct klist_node knode_bus;
- struct device *device;
-};
-#define to_device_private_parent(obj) \
- container_of(obj, struct device_private, knode_parent)
-#define to_device_private_driver(obj) \
- container_of(obj, struct device_private, knode_driver)
-#define to_device_private_bus(obj) \
- container_of(obj, struct device_private, knode_bus)
-
/* initialisation functions */
extern int devices_init(void);
extern int buses_init(void);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 0f0a50444672..83f32b891fa9 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -253,14 +253,7 @@ static ssize_t store_drivers_probe(struct bus_type *bus,
static struct device *next_device(struct klist_iter *i)
{
struct klist_node *n = klist_next(i);
- struct device *dev = NULL;
- struct device_private *dev_prv;
-
- if (n) {
- dev_prv = to_device_private_bus(n);
- dev = dev_prv->device;
- }
- return dev;
+ return n ? container_of(n, struct device, knode_bus) : NULL;
}
/**
@@ -293,7 +286,7 @@ int bus_for_each_dev(struct bus_type *bus, struct device *start,
return -EINVAL;
klist_iter_init_node(&bus->p->klist_devices, &i,
- (start ? &start->p->knode_bus : NULL));
+ (start ? &start->knode_bus : NULL));
while ((dev = next_device(&i)) && !error)
error = fn(dev, data);
klist_iter_exit(&i);
@@ -327,7 +320,7 @@ struct device *bus_find_device(struct bus_type *bus,
return NULL;
klist_iter_init_node(&bus->p->klist_devices, &i,
- (start ? &start->p->knode_bus : NULL));
+ (start ? &start->knode_bus : NULL));
while ((dev = next_device(&i)))
if (match(dev, data) && get_device(dev))
break;
@@ -514,8 +507,7 @@ void bus_attach_device(struct device *dev)
ret = device_attach(dev);
WARN_ON(ret < 0);
if (ret >= 0)
- klist_add_tail(&dev->p->knode_bus,
- &bus->p->klist_devices);
+ klist_add_tail(&dev->knode_bus, &bus->p->klist_devices);
}
}
@@ -536,8 +528,8 @@ void bus_remove_device(struct device *dev)
sysfs_remove_link(&dev->bus->p->devices_kset->kobj,
dev_name(dev));
device_remove_attrs(dev->bus, dev);
- if (klist_node_attached(&dev->p->knode_bus))
- klist_del(&dev->p->knode_bus);
+ if (klist_node_attached(&dev->knode_bus))
+ klist_del(&dev->knode_bus);
pr_debug("bus: '%s': remove device %s\n",
dev->bus->name, dev_name(dev));
@@ -839,16 +831,14 @@ static void bus_remove_attrs(struct bus_type *bus)
static void klist_devices_get(struct klist_node *n)
{
- struct device_private *dev_prv = to_device_private_bus(n);
- struct device *dev = dev_prv->device;
+ struct device *dev = container_of(n, struct device, knode_bus);
get_device(dev);
}
static void klist_devices_put(struct klist_node *n)
{
- struct device_private *dev_prv = to_device_private_bus(n);
- struct device *dev = dev_prv->device;
+ struct device *dev = container_of(n, struct device, knode_bus);
put_device(dev);
}
@@ -1003,20 +993,18 @@ static void device_insertion_sort_klist(struct device *a, struct list_head *list
{
struct list_head *pos;
struct klist_node *n;
- struct device_private *dev_prv;
struct device *b;
list_for_each(pos, list) {
n = container_of(pos, struct klist_node, n_node);
- dev_prv = to_device_private_bus(n);
- b = dev_prv->device;
+ b = container_of(n, struct device, knode_bus);
if (compare(a, b) <= 0) {
- list_move_tail(&a->p->knode_bus.n_node,
- &b->p->knode_bus.n_node);
+ list_move_tail(&a->knode_bus.n_node,
+ &b->knode_bus.n_node);
return;
}
}
- list_move_tail(&a->p->knode_bus.n_node, list);
+ list_move_tail(&a->knode_bus.n_node, list);
}
void bus_sort_breadthfirst(struct bus_type *bus,
@@ -1026,7 +1014,6 @@ void bus_sort_breadthfirst(struct bus_type *bus,
LIST_HEAD(sorted_devices);
struct list_head *pos, *tmp;
struct klist_node *n;
- struct device_private *dev_prv;
struct device *dev;
struct klist *device_klist;
@@ -1035,8 +1022,7 @@ void bus_sort_breadthfirst(struct bus_type *bus,
spin_lock(&device_klist->k_lock);
list_for_each_safe(pos, tmp, &device_klist->k_list) {
n = container_of(pos, struct klist_node, n_node);
- dev_prv = to_device_private_bus(n);
- dev = dev_prv->device;
+ dev = container_of(n, struct device, knode_bus);
device_insertion_sort_klist(dev, &sorted_devices, compare);
}
list_splice(&sorted_devices, &device_klist->k_list);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 61df508fa62b..8079afca4972 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -109,7 +109,6 @@ 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);
@@ -121,7 +120,6 @@ 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 = {
@@ -509,16 +507,14 @@ EXPORT_SYMBOL_GPL(device_schedule_callback_owner);
static void klist_children_get(struct klist_node *n)
{
- struct device_private *p = to_device_private_parent(n);
- struct device *dev = p->device;
+ struct device *dev = container_of(n, struct device, knode_parent);
get_device(dev);
}
static void klist_children_put(struct klist_node *n)
{
- struct device_private *p = to_device_private_parent(n);
- struct device *dev = p->device;
+ struct device *dev = container_of(n, struct device, knode_parent);
put_device(dev);
}
@@ -540,15 +536,9 @@ static void klist_children_put(struct klist_node *n)
*/
void device_initialize(struct device *dev)
{
- dev->p = kzalloc(sizeof(*dev->p), GFP_KERNEL);
- if (!dev->p) {
- WARN_ON(1);
- return;
- }
- dev->p->device = dev;
dev->kobj.kset = devices_kset;
kobject_init(&dev->kobj, &device_ktype);
- klist_init(&dev->p->klist_children, klist_children_get,
+ klist_init(&dev->klist_children, klist_children_get,
klist_children_put);
INIT_LIST_HEAD(&dev->dma_pools);
init_MUTEX(&dev->sem);
@@ -932,8 +922,7 @@ int device_add(struct device *dev)
kobject_uevent(&dev->kobj, KOBJ_ADD);
bus_attach_device(dev);
if (parent)
- klist_add_tail(&dev->p->knode_parent,
- &parent->p->klist_children);
+ klist_add_tail(&dev->knode_parent, &parent->klist_children);
if (dev->class) {
mutex_lock(&dev->class->p->class_mutex);
@@ -1047,7 +1036,7 @@ void device_del(struct device *dev)
device_pm_remove(dev);
dpm_sysfs_remove(dev);
if (parent)
- klist_del(&dev->p->knode_parent);
+ klist_del(&dev->knode_parent);
if (MAJOR(dev->devt)) {
device_remove_sys_dev_entry(dev);
device_remove_file(dev, &devt_attr);
@@ -1108,14 +1097,7 @@ void device_unregister(struct device *dev)
static struct device *next_device(struct klist_iter *i)
{
struct klist_node *n = klist_next(i);
- struct device *dev = NULL;
- struct device_private *p;
-
- if (n) {
- p = to_device_private_parent(n);
- dev = p->device;
- }
- return dev;
+ return n ? container_of(n, struct device, knode_parent) : NULL;
}
/**
@@ -1137,7 +1119,7 @@ int device_for_each_child(struct device *parent, void *data,
struct device *child;
int error = 0;
- klist_iter_init(&parent->p->klist_children, &i);
+ klist_iter_init(&parent->klist_children, &i);
while ((child = next_device(&i)) && !error)
error = fn(child, data);
klist_iter_exit(&i);
@@ -1168,7 +1150,7 @@ struct device *device_find_child(struct device *parent, void *data,
if (!parent)
return NULL;
- klist_iter_init(&parent->p->klist_children, &i);
+ klist_iter_init(&parent->klist_children, &i);
while ((child = next_device(&i)))
if (match(child, data) && get_device(child))
break;
@@ -1582,10 +1564,9 @@ int device_move(struct device *dev, struct device *new_parent)
old_parent = dev->parent;
dev->parent = new_parent;
if (old_parent)
- klist_remove(&dev->p->knode_parent);
+ klist_remove(&dev->knode_parent);
if (new_parent) {
- klist_add_tail(&dev->p->knode_parent,
- &new_parent->p->klist_children);
+ klist_add_tail(&dev->knode_parent, &new_parent->klist_children);
set_dev_node(dev, dev_to_node(new_parent));
}
@@ -1597,11 +1578,11 @@ int device_move(struct device *dev, struct device *new_parent)
device_move_class_links(dev, new_parent, old_parent);
if (!kobject_move(&dev->kobj, &old_parent->kobj)) {
if (new_parent)
- klist_remove(&dev->p->knode_parent);
+ klist_remove(&dev->knode_parent);
dev->parent = old_parent;
if (old_parent) {
- klist_add_tail(&dev->p->knode_parent,
- &old_parent->p->klist_children);
+ klist_add_tail(&dev->knode_parent,
+ &old_parent->klist_children);
set_dev_node(dev, dev_to_node(old_parent));
}
}
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 6fdaf76f033f..315bed8d5e7f 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -28,7 +28,7 @@
static void driver_bound(struct device *dev)
{
- if (klist_node_attached(&dev->p->knode_driver)) {
+ if (klist_node_attached(&dev->knode_driver)) {
printk(KERN_WARNING "%s: device %s already bound\n",
__func__, kobject_name(&dev->kobj));
return;
@@ -41,7 +41,7 @@ static void driver_bound(struct device *dev)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_BOUND_DRIVER, dev);
- klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
+ klist_add_tail(&dev->knode_driver, &dev->driver->p->klist_devices);
}
static int driver_sysfs_add(struct device *dev)
@@ -310,7 +310,7 @@ static void __device_release_driver(struct device *dev)
drv->remove(dev);
devres_release_all(dev);
dev->driver = NULL;
- klist_remove(&dev->p->knode_driver);
+ klist_remove(&dev->knode_driver);
}
}
@@ -340,7 +340,6 @@ EXPORT_SYMBOL_GPL(device_release_driver);
*/
void driver_detach(struct device_driver *drv)
{
- struct device_private *dev_prv;
struct device *dev;
for (;;) {
@@ -349,10 +348,8 @@ void driver_detach(struct device_driver *drv)
spin_unlock(&drv->p->klist_devices.k_lock);
break;
}
- dev_prv = list_entry(drv->p->klist_devices.k_list.prev,
- struct device_private,
- knode_driver.n_node);
- dev = dev_prv->device;
+ dev = list_entry(drv->p->klist_devices.k_list.prev,
+ struct device, knode_driver.n_node);
get_device(dev);
spin_unlock(&drv->p->klist_devices.k_lock);
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index b76cc69f1106..1e2bda780e48 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -19,14 +19,7 @@
static struct device *next_device(struct klist_iter *i)
{
struct klist_node *n = klist_next(i);
- struct device *dev = NULL;
- struct device_private *dev_prv;
-
- if (n) {
- dev_prv = to_device_private_driver(n);
- dev = dev_prv->device;
- }
- return dev;
+ return n ? container_of(n, struct device, knode_driver) : NULL;
}
/**
@@ -49,7 +42,7 @@ int driver_for_each_device(struct device_driver *drv, struct device *start,
return -EINVAL;
klist_iter_init_node(&drv->p->klist_devices, &i,
- start ? &start->p->knode_driver : NULL);
+ start ? &start->knode_driver : NULL);
while ((dev = next_device(&i)) && !error)
error = fn(dev, data);
klist_iter_exit(&i);
@@ -83,7 +76,7 @@ struct device *driver_find_device(struct device_driver *drv,
return NULL;
klist_iter_init_node(&drv->p->klist_devices, &i,
- (start ? &start->p->knode_driver : NULL));
+ (start ? &start->knode_driver : NULL));
while ((dev = next_device(&i)))
if (match(dev, data) && get_device(dev))
break;
diff --git a/include/linux/device.h b/include/linux/device.h
index 7d9da4b4993f..45e5b1921fbb 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -28,7 +28,6 @@
#define BUS_ID_SIZE 20
struct device;
-struct device_private;
struct device_driver;
struct driver_private;
struct class;
@@ -366,10 +365,12 @@ struct device_dma_parameters {
};
struct device {
+ 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 device_private *p;
-
struct kobject kobj;
char bus_id[BUS_ID_SIZE]; /* position on parent bus */
unsigned uevent_suppress:1;
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