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.
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
Forgot this one in the series, it adds support to classes for groups, so
that we can handle binary attributes properly for them as well.
drivers/base/core.c | 8 +++++++-
include/linux/device.h | 4 +++-
2 files changed, 10 insertions(+), 2 deletions(-)
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -528,9 +528,12 @@ static int device_add_attrs(struct devic
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 devic
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;
}
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -313,6 +313,7 @@ int subsys_virtual_register(struct bus_t
* @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.
@@ -342,7 +343,8 @@ 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;
--
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