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driver core: add default groups to struct class

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We should be using groups, not attribute lists, for classes to allow
subdirectories, and soon, binary files.  Groups are just more flexible
overall, so add them.

The dev_attrs list will go away after all in-kernel users are converted
to use dev_groups.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2013-07-14 16:05:58 -07:00
parent 39ef311204
commit d05a6f96c7
2 changed files with 11 additions and 2 deletions
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9
drivers/base/core.c
View File

@ -528,9 +528,12 @@ static int device_add_attrs(struct device *dev)
int error;
if (class) {
error = device_add_attributes(dev, class->dev_attrs);
error = device_add_groups(dev, class->dev_groups);
if (error)
return error;
error = device_add_attributes(dev, class->dev_attrs);
if (error)
goto err_remove_class_groups;
error = device_add_bin_attributes(dev, class->dev_bin_attrs);
if (error)
goto err_remove_class_attrs;
@ -563,6 +566,9 @@ static int device_add_attrs(struct device *dev)
err_remove_class_attrs:
if (class)
device_remove_attributes(dev, class->dev_attrs);
err_remove_class_groups:
if (class)
device_remove_groups(dev, class->dev_groups);
return error;
}
@ -581,6 +587,7 @@ static void device_remove_attrs(struct device *dev)
if (class) {
device_remove_attributes(dev, class->dev_attrs);
device_remove_bin_attributes(dev, class->dev_bin_attrs);
device_remove_groups(dev, class->dev_groups);
}
}

4
include/linux/device.h
View File

@ -320,6 +320,7 @@ int subsys_virtual_register(struct bus_type *subsys,
* @name: Name of the class.
* @owner: The module owner.
* @class_attrs: Default attributes of this class.
* @dev_groups: Default attributes of the devices that belong to the class.
* @dev_attrs: Default attributes of the devices belong to the class.
* @dev_bin_attrs: Default binary attributes of the devices belong to the class.
* @dev_kobj: The kobject that represents this class and links it into the hierarchy.
@ -349,7 +350,8 @@ struct class {
struct module *owner;
struct class_attribute *class_attrs;
struct device_attribute *dev_attrs;
struct device_attribute *dev_attrs; /* use dev_groups instead */
const struct attribute_group **dev_groups;
struct bin_attribute *dev_bin_attrs;
struct kobject *dev_kobj;