struct bus_type *bus;
};
+struct driver_private {
+ struct kobject kobj;
+ struct klist klist_devices;
+ struct klist_node knode_bus;
+ struct module_kobject *mkobj;
+ struct device_driver *driver;
+};
+#define to_driver(obj) container_of(obj, struct driver_private, kobj)
/* initialisation functions */
extern int devices_init(void);
*
* Copyright (c) 2002-3 Patrick Mochel
* Copyright (c) 2002-3 Open Source Development Labs
+ * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de>
+ * Copyright (c) 2007 Novell Inc.
*
* This file is released under the GPLv2
*
*/
#define to_drv_attr(_attr) container_of(_attr, struct driver_attribute, attr)
-#define to_driver(obj) container_of(obj, struct device_driver, kobj)
static int __must_check bus_rescan_devices_helper(struct device *dev,
drv_attr_show(struct kobject * kobj, struct attribute * attr, char * buf)
{
struct driver_attribute * drv_attr = to_drv_attr(attr);
- struct device_driver * drv = to_driver(kobj);
+ struct driver_private *drv_priv = to_driver(kobj);
ssize_t ret = -EIO;
if (drv_attr->show)
- ret = drv_attr->show(drv, buf);
+ ret = drv_attr->show(drv_priv->driver, buf);
return ret;
}
const char * buf, size_t count)
{
struct driver_attribute * drv_attr = to_drv_attr(attr);
- struct device_driver * drv = to_driver(kobj);
+ struct driver_private *drv_priv = to_driver(kobj);
ssize_t ret = -EIO;
if (drv_attr->store)
- ret = drv_attr->store(drv, buf, count);
+ ret = drv_attr->store(drv_priv->driver, buf, count);
return ret;
}
.store = drv_attr_store,
};
-
-static void driver_release(struct kobject * kobj)
+static void driver_release(struct kobject *kobj)
{
- /*
- * Yes this is an empty release function, it is this way because struct
- * device is always a static object, not a dynamic one. Yes, this is
- * not nice and bad, but remember, drivers are code, reference counted
- * by the module count, not a device, which is really data. And yes,
- * in the future I do want to have all drivers be created dynamically,
- * and am working toward that goal, but it will take a bit longer...
- *
- * But do not let this example give _anyone_ the idea that they can
- * create a release function without any code in it at all, to do that
- * is almost always wrong. If you have any questions about this,
- * please send an email to <greg@kroah.com>
- */
+ struct driver_private *drv_priv = to_driver(kobj);
+
+ pr_debug("%s: freeing %s\n", __FUNCTION__, kobject_name(kobj));
+ kfree(drv_priv);
}
static struct kobj_type driver_ktype = {
static struct device_driver * next_driver(struct klist_iter * i)
{
struct klist_node * n = klist_next(i);
- return n ? container_of(n, struct device_driver, knode_bus) : NULL;
+ struct driver_private *drv_priv;
+
+ if (n) {
+ drv_priv = container_of(n, struct driver_private, knode_bus);
+ return drv_priv->driver;
+ }
+ return NULL;
}
/**
return -EINVAL;
klist_iter_init_node(&bus->p->klist_drivers, &i,
- start ? &start->knode_bus : NULL);
+ start ? &start->p->knode_bus : NULL);
while ((drv = next_driver(&i)) && !error)
error = fn(drv, data);
klist_iter_exit(&i);
enum kobject_action action;
if (kobject_action_type(buf, count, &action) == 0)
- kobject_uevent(&drv->kobj, action);
+ kobject_uevent(&drv->p->kobj, action);
return count;
}
static DRIVER_ATTR(uevent, S_IWUSR, NULL, driver_uevent_store);
*/
int bus_add_driver(struct device_driver *drv)
{
- struct bus_type * bus = bus_get(drv->bus);
+ struct bus_type *bus;
+ struct driver_private *priv;
int error = 0;
+ bus = bus_get(drv->bus);
if (!bus)
return -EINVAL;
pr_debug("bus %s: add driver %s\n", bus->name, drv->name);
- error = kobject_set_name(&drv->kobj, "%s", drv->name);
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ error = kobject_set_name(&priv->kobj, "%s", drv->name);
if (error)
goto out_put_bus;
- drv->kobj.kset = bus->p->drivers_kset;
- drv->kobj.ktype = &driver_ktype;
- error = kobject_register(&drv->kobj);
+ priv->kobj.kset = bus->p->drivers_kset;
+ priv->kobj.ktype = &driver_ktype;
+ klist_init(&priv->klist_devices, NULL, NULL);
+ priv->driver = drv;
+ drv->p = priv;
+ error = kobject_register(&priv->kobj);
if (error)
goto out_put_bus;
if (error)
goto out_unregister;
}
- klist_add_tail(&drv->knode_bus, &bus->p->klist_drivers);
+ klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers);
module_add_driver(drv->owner, drv);
error = driver_create_file(drv, &driver_attr_uevent);
return error;
out_unregister:
- kobject_unregister(&drv->kobj);
+ kobject_unregister(&priv->kobj);
out_put_bus:
bus_put(bus);
return error;
remove_bind_files(drv);
driver_remove_attrs(drv->bus, drv);
driver_remove_file(drv, &driver_attr_uevent);
- klist_remove(&drv->knode_bus);
+ klist_remove(&drv->p->knode_bus);
pr_debug("bus %s: remove driver %s\n", drv->bus->name, drv->name);
driver_detach(drv);
module_remove_driver(drv);
- kobject_unregister(&drv->kobj);
+ kobject_unregister(&drv->p->kobj);
bus_put(drv->bus);
}
*
* Copyright (c) 2002-5 Patrick Mochel
* Copyright (c) 2002-3 Open Source Development Labs
+ * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de>
+ * Copyright (c) 2007 Novell Inc.
*
* This file is released under the GPLv2
*/
#include "base.h"
#include "power/power.h"
-#define to_drv(node) container_of(node, struct device_driver, kobj.entry)
-
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->knode_driver, &dev->driver->klist_devices);
+ klist_add_tail(&dev->knode_driver, &dev->driver->p->klist_devices);
}
static int driver_sysfs_add(struct device *dev)
{
int ret;
- ret = sysfs_create_link(&dev->driver->kobj, &dev->kobj,
+ ret = sysfs_create_link(&dev->driver->p->kobj, &dev->kobj,
kobject_name(&dev->kobj));
if (ret == 0) {
- ret = sysfs_create_link(&dev->kobj, &dev->driver->kobj,
+ ret = sysfs_create_link(&dev->kobj, &dev->driver->p->kobj,
"driver");
if (ret)
- sysfs_remove_link(&dev->driver->kobj,
+ sysfs_remove_link(&dev->driver->p->kobj,
kobject_name(&dev->kobj));
}
return ret;
struct device_driver *drv = dev->driver;
if (drv) {
- sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
+ sysfs_remove_link(&drv->p->kobj, kobject_name(&dev->kobj));
sysfs_remove_link(&dev->kobj, "driver");
}
}
struct device * dev;
for (;;) {
- spin_lock(&drv->klist_devices.k_lock);
- if (list_empty(&drv->klist_devices.k_list)) {
- spin_unlock(&drv->klist_devices.k_lock);
+ spin_lock(&drv->p->klist_devices.k_lock);
+ if (list_empty(&drv->p->klist_devices.k_list)) {
+ spin_unlock(&drv->p->klist_devices.k_lock);
break;
}
- dev = list_entry(drv->klist_devices.k_list.prev,
+ dev = list_entry(drv->p->klist_devices.k_list.prev,
struct device, knode_driver.n_node);
get_device(dev);
- spin_unlock(&drv->klist_devices.k_lock);
+ spin_unlock(&drv->p->klist_devices.k_lock);
if (dev->parent) /* Needed for USB */
down(&dev->parent->sem);
*
* Copyright (c) 2002-3 Patrick Mochel
* Copyright (c) 2002-3 Open Source Development Labs
+ * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de>
+ * Copyright (c) 2007 Novell Inc.
*
* This file is released under the GPLv2
*
#include "base.h"
#define to_dev(node) container_of(node, struct device, driver_list)
-#define to_drv(obj) container_of(obj, struct device_driver, kobj)
static struct device * next_device(struct klist_iter * i)
if (!drv)
return -EINVAL;
- klist_iter_init_node(&drv->klist_devices, &i,
+ klist_iter_init_node(&drv->p->klist_devices, &i,
start ? &start->knode_driver : NULL);
while ((dev = next_device(&i)) && !error)
error = fn(dev, data);
if (!drv)
return NULL;
- klist_iter_init_node(&drv->klist_devices, &i,
+ klist_iter_init_node(&drv->p->klist_devices, &i,
(start ? &start->knode_driver : NULL));
while ((dev = next_device(&i)))
if (match(dev, data) && get_device(dev))
{
int error;
if (get_driver(drv)) {
- error = sysfs_create_file(&drv->kobj, &attr->attr);
+ error = sysfs_create_file(&drv->p->kobj, &attr->attr);
put_driver(drv);
} else
error = -EINVAL;
void driver_remove_file(struct device_driver * drv, struct driver_attribute * attr)
{
if (get_driver(drv)) {
- sysfs_remove_file(&drv->kobj, &attr->attr);
+ sysfs_remove_file(&drv->p->kobj, &attr->attr);
put_driver(drv);
}
}
if (!name)
return -ENOMEM;
- return kobject_add_ng(kobj, &drv->kobj, "%s", name);
+ return kobject_add_ng(kobj, &drv->p->kobj, "%s", name);
}
EXPORT_SYMBOL_GPL(driver_add_kobj);
*/
struct device_driver * get_driver(struct device_driver * drv)
{
- return drv ? to_drv(kobject_get(&drv->kobj)) : NULL;
+ if (drv) {
+ struct driver_private *priv;
+ struct kobject *kobj;
+
+ kobj = kobject_get(&drv->p->kobj);
+ priv = to_driver(kobj);
+ return priv->driver;
+ }
+ return NULL;
}
*/
void put_driver(struct device_driver * drv)
{
- kobject_put(&drv->kobj);
+ kobject_put(&drv->p->kobj);
}
static int driver_add_groups(struct device_driver *drv,
if (groups) {
for (i = 0; groups[i]; i++) {
- error = sysfs_create_group(&drv->kobj, groups[i]);
+ error = sysfs_create_group(&drv->p->kobj, groups[i]);
if (error) {
while (--i >= 0)
- sysfs_remove_group(&drv->kobj,
+ sysfs_remove_group(&drv->p->kobj,
groups[i]);
break;
}
if (groups)
for (i = 0; groups[i]; i++)
- sysfs_remove_group(&drv->kobj, groups[i]);
+ sysfs_remove_group(&drv->p->kobj, groups[i]);
}
(drv->bus->shutdown && drv->shutdown)) {
printk(KERN_WARNING "Driver '%s' needs updating - please use bus_type methods\n", drv->name);
}
- klist_init(&drv->klist_devices, NULL, NULL);
ret = bus_add_driver(drv);
if (ret)
return ret;
struct device_driver *driver_find(const char *name, struct bus_type *bus)
{
struct kobject *k = kset_find_obj(bus->p->drivers_kset, name);
- if (k)
- return to_drv(k);
+ struct driver_private *priv;
+
+ if (k) {
+ priv = to_driver(k);
+ return priv->driver;
+ }
return NULL;
}
if (mkobj) {
mk = container_of(mkobj, struct module_kobject, kobj);
/* remember our module structure */
- drv->mkobj = mk;
+ drv->p->mkobj = mk;
/* kset_find_obj took a reference */
kobject_put(mkobj);
}
return;
/* Don't check return codes; these calls are idempotent */
- no_warn = sysfs_create_link(&drv->kobj, &mk->kobj, "module");
+ no_warn = sysfs_create_link(&drv->p->kobj, &mk->kobj, "module");
driver_name = make_driver_name(drv);
if (driver_name) {
module_create_drivers_dir(mk);
- no_warn = sysfs_create_link(mk->drivers_dir, &drv->kobj,
+ no_warn = sysfs_create_link(mk->drivers_dir, &drv->p->kobj,
driver_name);
kfree(driver_name);
}
if (!drv)
return;
- sysfs_remove_link(&drv->kobj, "module");
+ sysfs_remove_link(&drv->p->kobj, "module");
if (drv->owner)
mk = &drv->owner->mkobj;
- else if (drv->mkobj)
- mk = drv->mkobj;
+ else if (drv->p->mkobj)
+ mk = drv->p->mkobj;
if (mk && mk->drivers_dir) {
driver_name = make_driver_name(drv);
if (driver_name) {
*/
spin_lock(&platform_bus_type.p->klist_drivers.k_lock);
drv->probe = NULL;
- if (code == 0 && list_empty(&drv->driver.klist_devices.k_list))
+ if (code == 0 && list_empty(&drv->driver.p->klist_devices.k_list))
retval = -ENODEV;
drv->driver.probe = platform_drv_probe_fail;
spin_unlock(&platform_bus_type.p->klist_drivers.k_lock);
struct device;
struct device_driver;
+struct driver_private;
struct class;
struct class_device;
struct bus_type;
extern struct klist *bus_get_device_klist(struct bus_type *bus);
struct device_driver {
- const char * name;
- struct bus_type * bus;
-
- struct kobject kobj;
- struct klist klist_devices;
- struct klist_node knode_bus;
+ const char *name;
+ struct bus_type *bus;
- struct module * owner;
- const char * mod_name; /* used for built-in modules */
- struct module_kobject * mkobj;
+ struct module *owner;
+ const char *mod_name; /* used for built-in modules */
int (*probe) (struct device * dev);
int (*remove) (struct device * dev);
int (*suspend) (struct device * dev, pm_message_t state);
int (*resume) (struct device * dev);
struct attribute_group **groups;
+
+ struct driver_private *p;
};
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff