From d05a6f96c76062b5f25858ac02cf677602076f7e Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Sun, 14 Jul 2013 16:05:58 -0700 Subject: [PATCH] driver core: add default groups to struct class 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 Tested-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman --- drivers/base/core.c | 9 ++++++++- include/linux/device.h | 4 +++- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/base/core.c b/drivers/base/core.c index a8aae1823f73..8856d74545d9 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -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); } } diff --git a/include/linux/device.h b/include/linux/device.h index bd5931e89f74..22b546a58591 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -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; -- 2.20.1