remove_mdev_supported_type(type);
}
- sysfs_remove_groups(&parent->dev->kobj, parent->ops->dev_attr_groups);
kset_unregister(parent->mdev_types_kset);
}
INIT_LIST_HEAD(&parent->type_list);
- ret = sysfs_create_groups(&parent->dev->kobj,
- parent->ops->dev_attr_groups);
- if (ret)
- goto create_err;
-
ret = add_mdev_supported_type_groups(parent);
if (ret)
- sysfs_remove_groups(&parent->dev->kobj,
- parent->ops->dev_attr_groups);
- else
- return ret;
+ goto create_err;
+ return 0;
create_err:
kset_unregister(parent->mdev_types_kset);
*
* @owner: The module owner.
* @device_driver: Which device driver to probe() on newly created devices
- * @dev_attr_groups: Attributes of the parent device.
* @mdev_attr_groups: Attributes of the mediated device.
* @supported_type_groups: Attributes to define supported types. It is mandatory
* to provide supported types.
struct mdev_parent_ops {
struct module *owner;
struct mdev_driver *device_driver;
- const struct attribute_group **dev_attr_groups;
const struct attribute_group **mdev_attr_groups;
struct attribute_group **supported_type_groups;
};
}
static ssize_t
-sample_mtty_dev_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- return sprintf(buf, "This is phy device\n");
-}
-
-static DEVICE_ATTR_RO(sample_mtty_dev);
-
-static struct attribute *mtty_dev_attrs[] = {
- &dev_attr_sample_mtty_dev.attr,
- NULL,
-};
-
-static const struct attribute_group mtty_dev_group = {
- .name = "mtty_dev",
- .attrs = mtty_dev_attrs,
-};
-
-static const struct attribute_group *mtty_dev_groups[] = {
- &mtty_dev_group,
- NULL,
-};
-
-static ssize_t
sample_mdev_dev_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- if (mdev_from_dev(dev))
- return sprintf(buf, "This is MDEV %s\n", dev_name(dev));
-
- return sprintf(buf, "\n");
+ return sprintf(buf, "This is MDEV %s\n", dev_name(dev));
}
static DEVICE_ATTR_RO(sample_mdev_dev);
static const struct mdev_parent_ops mdev_fops = {
.owner = THIS_MODULE,
.device_driver = &mtty_driver,
- .dev_attr_groups = mtty_dev_groups,
.supported_type_groups = mdev_type_groups,
};