From ba61af6f3e4766c76aec0b5e7f2bb8277e1acdd0 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 12 Mar 2015 09:58:28 -0400 Subject: [PATCH] sysfs: Document struct attribute_group Document variables defined in struct attribute_group to ensure correct usage. Signed-off-by: Guenter Roeck Signed-off-by: Vivien Didelot Signed-off-by: Greg Kroah-Hartman --- include/linux/sysfs.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index ddad161..99382c0 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -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 *, -- 2.7.4