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sysfs: Document struct attribute_group

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Document variables defined in struct attribute_group to ensure
correct usage.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Guenter Roeck 2015-03-12 09:58:28 -04:00 committed by Greg Kroah-Hartman
parent d8bf8c92e8
commit ba61af6f3e
1 changed files with 15 additions and 0 deletions
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15
include/linux/sysfs.h
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@ -57,6 +57,21 @@ do { \
#define sysfs_attr_init(attr) do {} while (0)
#endif
/**
* struct attribute_group - data structure used to declare an attribute group.
* @name: Optional: Attribute group name
* If specified, the attribute group will be created in
* a new subdirectory with this name.
* @is_visible: Optional: Function to return permissions associated with an
* attribute of the group. Will be called repeatedly for each
* attribute in the group. Only read/write permissions as well as
* SYSFS_PREALLOC are accepted. Must return 0 if an attribute is
* not visible. The returned value will replace static permissions
* defined in struct attribute or struct bin_attribute.
* @attrs: Pointer to NULL terminated list of attributes.
* @bin_attrs: Pointer to NULL terminated list of binary attributes.
* Either attrs or bin_attrs or both must be provided.
*/
struct attribute_group {
const char *name;
umode_t (*is_visible)(struct kobject *,