C++ (Cpp) driver_attach示例

示例#1

文件： bus.c 项目： johnny/CobraDroidBeta

/**
 * bus_add_driver - Add a driver to the bus.
 * @drv: driver.
 */
int bus_add_driver(struct device_driver *drv)
{
	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);

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		error = -ENOMEM;
		goto out_put_bus;
	}
	klist_init(&priv->klist_devices, NULL, NULL);
	priv->driver = drv;
	drv->p = priv;
	priv->kobj.kset = bus->p->drivers_kset;
	error = kobject_init_and_add(&priv->kobj, &driver_ktype, NULL,
				     "%s", drv->name);
	if (error)
		goto out_unregister;

	if (drv->bus->p->drivers_autoprobe) {
		error = driver_attach(drv);
		if (error)
			goto out_unregister;
	}
	klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers);
	module_add_driver(drv->owner, drv);

	error = driver_create_file(drv, &driver_attr_uevent);
	if (error) {
		printk(KERN_ERR "%s: uevent attr (%s) failed\n",
			__func__, drv->name);
	}
	error = driver_add_attrs(bus, drv);
	if (error) {
		/* How the hell do we get out of this pickle? Give up */
		printk(KERN_ERR "%s: driver_add_attrs(%s) failed\n",
			__func__, drv->name);
	}
	error = add_bind_files(drv);
	if (error) {
		/* Ditto */
		printk(KERN_ERR "%s: add_bind_files(%s) failed\n",
			__func__, drv->name);
	}

	kobject_uevent(&priv->kobj, KOBJ_ADD);
	return error;
out_unregister:
	kobject_put(&priv->kobj);
out_put_bus:
	bus_put(bus);
	return error;
}

示例#2

文件： bus.c 项目： xf739645524/kernel-rhel5

/**
 *	bus_add_driver - Add a driver to the bus.
 *	@drv:	driver.
 *
 */
int bus_add_driver(struct device_driver * drv)
{
	struct bus_type * bus = get_bus(drv->bus);
	int error = 0;

	if (bus) {
		pr_debug("bus %s: add driver %s\n", bus->name, drv->name);
		error = kobject_set_name(&drv->kobj, "%s", drv->name);
		if (error) {
			put_bus(bus);
			return error;
		}
		drv->kobj.kset = &bus->drivers;
		if ((error = kobject_register(&drv->kobj))) {
			put_bus(bus);
			return error;
		}

		driver_attach(drv);
		klist_add_tail(&drv->knode_bus, &bus->klist_drivers);
		module_add_driver(drv->owner, drv);

		driver_add_attrs(bus, drv);
		add_bind_files(drv);
	}
	return error;
}

示例#3

文件： bus.c 项目： loverlucia/linux-2.6.24

/**
 *	bus_add_driver - Add a driver to the bus.
 *	@drv:	driver.
 *
 */
int bus_add_driver(struct device_driver *drv)
{
	struct bus_type * bus = bus_get(drv->bus);
	int error = 0;

	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);
	if (error)
		goto out_put_bus;
	drv->kobj.kset = &bus->drivers;
	error = kobject_register(&drv->kobj);
	if (error)
		goto out_put_bus;

	//如果总线支持自动探测，则调用driver_attach。
	if (drv->bus->drivers_autoprobe)
	{
		error = driver_attach(drv);
		if (error)
			goto out_unregister;
	}
	//将该驱动程序添加到总线上注册的所有驱动程序的链表中
	klist_add_tail(&drv->knode_bus, &bus->klist_drivers);
	module_add_driver(drv->owner, drv);

	error = driver_create_file(drv, &driver_attr_uevent);
	if (error)
	{
		printk(KERN_ERR "%s: uevent attr (%s) failed\n", __FUNCTION__, drv->name);
	}
	error = driver_add_attrs(bus, drv);
	if (error) 
	{
		/* How the hell do we get out of this pickle? Give up */
		printk(KERN_ERR "%s: driver_add_attrs(%s) failed\n", __FUNCTION__, drv->name);
	}
	error = add_bind_files(drv);
	if (error)
	{
		/* Ditto */
		printk(KERN_ERR "%s: add_bind_files(%s) failed\n", __FUNCTION__, drv->name);
	}

	return error;
out_unregister:
	kobject_unregister(&drv->kobj);
out_put_bus:
	bus_put(bus);
	return error;
}

示例#4

文件： bus.c 项目： B-Rich/linux_drivers

/**
 *	bus_add_driver - Add a driver to the bus.
 *	@drv:	driver.
 *
 */
int bus_add_driver(struct device_driver *drv)
{
	struct bus_type * bus = get_bus(drv->bus);
	int error = 0;

	if (!bus)
		return 0;

	pr_debug("bus %s: add driver %s\n", bus->name, drv->name);
	error = kobject_set_name(&drv->kobj, "%s", drv->name);
	if (error)
		goto out_put_bus;
	drv->kobj.kset = &bus->drivers;
	if ((error = kobject_register(&drv->kobj)))
		goto out_put_bus;

	error = driver_attach(drv);
	if (error)
		goto out_unregister;
	klist_add_tail(&drv->knode_bus, &bus->klist_drivers);
	module_add_driver(drv->owner, drv);

	error = driver_add_attrs(bus, drv);
	if (error) {
		/* How the hell do we get out of this pickle? Give up */
		printk(KERN_ERR "%s: driver_add_attrs(%s) failed\n",
			__FUNCTION__, drv->name);
	}
	error = add_bind_files(drv);
	if (error) {
		/* Ditto */
		printk(KERN_ERR "%s: add_bind_files(%s) failed\n",
			__FUNCTION__, drv->name);
	}

	return error;
out_unregister:
	kobject_unregister(&drv->kobj);
out_put_bus:
	put_bus(bus);
	return error;
}

示例#5

文件： bus.c 项目： yl849646685/linux-2.6.32

/**
 * bus_add_driver :总线注册驱动.
 */
int bus_add_driver(struct device_driver *drv)
{
	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);

	/*申请驱动私有数据内存，驱动所支持的所有设备都存放到
	 * priv中*/
	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		error = -ENOMEM;
		goto out_put_bus;
	}
	klist_init(&priv->klist_devices, NULL, NULL);
	priv->driver = drv;
	drv->p = priv;
	/*驱动加入到总线的驱动对象集合中*/
	priv->kobj.kset = bus->p->drivers_kset;
	/*在sys文件系统中创建priv->kobj对象,目录名称为drv->name*/
	error = kobject_init_and_add(&priv->kobj, &driver_ktype, NULL,
				     "%s", drv->name);
	if (error)
		goto out_unregister;

	if (drv->bus->p->drivers_autoprobe) {
		error = driver_attach(drv);
		if (error)
			goto out_unregister;
	}
	/*驱动链接到所属的bus的driver链表中*/
	klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers);
	module_add_driver(drv->owner, drv);

	/*在sys文件系统中创建drv->p->kobj目录下创建驱动属性文件*/
	error = driver_create_file(drv, &driver_attr_uevent);
	if (error) {
		printk(KERN_ERR "%s: uevent attr (%s) failed\n",
			__func__, drv->name);
	}
	/*为drv->p->kobj目录项下创建bus属性文件*/
	error = driver_add_attrs(bus, drv);
	if (error) {
		/* How the hell do we get out of this pickle? Give up */
		printk(KERN_ERR "%s: driver_add_attrs(%s) failed\n",
			__func__, drv->name);
	}

	if (!drv->suppress_bind_attrs) {
		error = add_bind_files(drv);
		if (error) {
			/* Ditto */
			printk(KERN_ERR "%s: add_bind_files(%s) failed\n",
				__func__, drv->name);
		}
	}

	kobject_uevent(&priv->kobj, KOBJ_ADD);
	return 0;

out_unregister:
	kfree(drv->p);
	drv->p = NULL;
	kobject_put(&priv->kobj);
out_put_bus:
	bus_put(bus);
	return error;
}

示例#6

文件： bus.c 项目： MattCrystal/yolo-computing-machine

/**
 * bus_add_driver - Add a driver to the bus.
 * @drv: driver.
 */
int bus_add_driver(struct device_driver *drv)
{
	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);

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		error = -ENOMEM;
		goto out_put_bus;
	}
	klist_init(&priv->klist_devices, NULL, NULL);
	priv->driver = drv;
	drv->p = priv;
	priv->kobj.kset = bus->p->drivers_kset;
	error = kobject_init_and_add(&priv->kobj, &driver_ktype, NULL,
				     "%s", drv->name);
	if (error)
		goto out_unregister;

	klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers);//[Audio_BSP][common]2013-06-10 [email protected] driver core: fix possible missting of device probe from code aurora
	if (drv->bus->p->drivers_autoprobe) {
		error = driver_attach(drv);
		if (error)
			goto out_unregister;
	}
	module_add_driver(drv->owner, drv);

	error = driver_create_file(drv, &driver_attr_uevent);
	if (error) {
		printk(KERN_ERR "%s: uevent attr (%s) failed\n",
			__func__, drv->name);
	}
	error = driver_add_attrs(bus, drv);
	if (error) {
		/* How the hell do we get out of this pickle? Give up */
		printk(KERN_ERR "%s: driver_add_attrs(%s) failed\n",
			__func__, drv->name);
	}

	if (!drv->suppress_bind_attrs) {
		error = add_bind_files(drv);
		if (error) {
			/* Ditto */
			printk(KERN_ERR "%s: add_bind_files(%s) failed\n",
				__func__, drv->name);
		}
	}

	kobject_uevent(&priv->kobj, KOBJ_ADD);
	return 0;

out_unregister:
	kobject_put(&priv->kobj);
	kfree(drv->p);
	drv->p = NULL;
out_put_bus:
	bus_put(bus);
	return error;
}