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driver core: move knode_driver into private structure

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Nothing outside of the driver core should ever touch knode_driver, so
move it out of the public eye.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman 2008-12-16 12:25:49 -08:00
parent 11c3b5c3e0
commit 93e746db18
4 changed files with 22 additions and 9 deletions
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4
drivers/base/base.h
View File

@ -68,6 +68,7 @@ struct class_private {
* *
* @klist_children - klist containing all children of this device * @klist_children - klist containing all children of this device
* @knode_parent - node in sibling list * @knode_parent - node in sibling list
* @knode_driver - node in driver list
* @device - pointer back to the struct class that this structure is * @device - pointer back to the struct class that this structure is
* associated with. * associated with.
* *
@ -76,10 +77,13 @@ struct class_private {
struct device_private { struct device_private {
struct klist klist_children; struct klist klist_children;
struct klist_node knode_parent; struct klist_node knode_parent;
struct klist_node knode_driver;
struct device *device; struct device *device;
}; };
#define to_device_private_parent(obj) \ #define to_device_private_parent(obj) \
container_of(obj, struct device_private, knode_parent) container_of(obj, struct device_private, knode_parent)
#define to_device_private_driver(obj) \
container_of(obj, struct device_private, knode_driver)
/* initialisation functions */ /* initialisation functions */
extern int devices_init(void); extern int devices_init(void);

13
drivers/base/dd.c
View File

@ -28,7 +28,7 @@
static void driver_bound(struct device *dev) static void driver_bound(struct device *dev)
{ {
if (klist_node_attached(&dev->knode_driver)) { if (klist_node_attached(&dev->p->knode_driver)) {
printk(KERN_WARNING "%s: device %s already bound\n", printk(KERN_WARNING "%s: device %s already bound\n",
__func__, kobject_name(&dev->kobj)); __func__, kobject_name(&dev->kobj));
return; return;
@ -41,7 +41,7 @@ static void driver_bound(struct device *dev)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier, blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_BOUND_DRIVER, dev); BUS_NOTIFY_BOUND_DRIVER, dev);
klist_add_tail(&dev->knode_driver, &dev->driver->p->klist_devices); klist_add_tail(&dev->p->knode_driver, &dev->driver->p->klist_devices);
} }
static int driver_sysfs_add(struct device *dev) static int driver_sysfs_add(struct device *dev)
@ -311,7 +311,7 @@ static void __device_release_driver(struct device *dev)
drv->remove(dev); drv->remove(dev);
devres_release_all(dev); devres_release_all(dev);
dev->driver = NULL; dev->driver = NULL;
klist_remove(&dev->knode_driver); klist_remove(&dev->p->knode_driver);
} }
} }
@ -341,6 +341,7 @@ EXPORT_SYMBOL_GPL(device_release_driver);
*/ */
void driver_detach(struct device_driver *drv) void driver_detach(struct device_driver *drv)
{ {
struct device_private *dev_prv;
struct device *dev; struct device *dev;
for (;;) { for (;;) {
@ -349,8 +350,10 @@ void driver_detach(struct device_driver *drv)
spin_unlock(&drv->p->klist_devices.k_lock); spin_unlock(&drv->p->klist_devices.k_lock);
break; break;
} }
dev = list_entry(drv->p->klist_devices.k_list.prev, dev_prv = list_entry(drv->p->klist_devices.k_list.prev,
struct device, knode_driver.n_node); struct device_private,
knode_driver.n_node);
dev = dev_prv->device;
get_device(dev); get_device(dev);
spin_unlock(&drv->p->klist_devices.k_lock); spin_unlock(&drv->p->klist_devices.k_lock);

13
drivers/base/driver.c
View File

@ -19,7 +19,14 @@
static struct device *next_device(struct klist_iter *i) static struct device *next_device(struct klist_iter *i)
{ {
struct klist_node *n = klist_next(i); struct klist_node *n = klist_next(i);
return n ? container_of(n, struct device, knode_driver) : NULL; struct device *dev = NULL;
struct device_private *dev_prv;
if (n) {
dev_prv = to_device_private_driver(n);
dev = dev_prv->device;
}
return dev;
} }
/** /**
@ -42,7 +49,7 @@ int driver_for_each_device(struct device_driver *drv, struct device *start,
return -EINVAL; return -EINVAL;
klist_iter_init_node(&drv->p->klist_devices, &i, klist_iter_init_node(&drv->p->klist_devices, &i,
start ? &start->knode_driver : NULL); start ? &start->p->knode_driver : NULL);
while ((dev = next_device(&i)) && !error) while ((dev = next_device(&i)) && !error)
error = fn(dev, data); error = fn(dev, data);
klist_iter_exit(&i); klist_iter_exit(&i);
@ -76,7 +83,7 @@ struct device *driver_find_device(struct device_driver *drv,
return NULL; return NULL;
klist_iter_init_node(&drv->p->klist_devices, &i, klist_iter_init_node(&drv->p->klist_devices, &i,
(start ? &start->knode_driver : NULL)); (start ? &start->p->knode_driver : NULL));
while ((dev = next_device(&i))) while ((dev = next_device(&i)))
if (match(dev, data) && get_device(dev)) if (match(dev, data) && get_device(dev))
break; break;

1
include/linux/device.h
View File

@ -366,7 +366,6 @@ struct device_dma_parameters {
}; };
struct device { struct device {
struct klist_node knode_driver;
struct klist_node knode_bus; struct klist_node knode_bus;
struct device *parent; struct device *parent;