Merge branch 'pm-cpufreq' into fixes

[~andy/linux] / fs / sysfs / group.c

diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 2df555c66d57d463381042632ae124ad53aecb42..aec3d5c98c94fa1d3d79de15a44dfa2a4a77e329 100644 (file)
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -205,6 +205,48 @@ void sysfs_unmerge_group(struct kobject *kobj,
 }
 EXPORT_SYMBOL_GPL(sysfs_unmerge_group);
 
+/**
+ * sysfs_add_link_to_group - add a symlink to an attribute group.
+ * @kobj:      The kobject containing the group.
+ * @group_name:        The name of the group.
+ * @target:    The target kobject of the symlink to create.
+ * @link_name: The name of the symlink to create.
+ */
+int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name,
+                           struct kobject *target, const char *link_name)
+{
+       struct sysfs_dirent *dir_sd;
+       int error = 0;
+
+       dir_sd = sysfs_get_dirent(kobj->sd, NULL, group_name);
+       if (!dir_sd)
+               return -ENOENT;
+
+       error = sysfs_create_link_sd(dir_sd, target, link_name);
+       sysfs_put(dir_sd);
+
+       return error;
+}
+EXPORT_SYMBOL_GPL(sysfs_add_link_to_group);
+
+/**
+ * sysfs_remove_link_from_group - remove a symlink from an attribute group.
+ * @kobj:      The kobject containing the group.
+ * @group_name:        The name of the group.
+ * @link_name: The name of the symlink to remove.
+ */
+void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name,
+                                 const char *link_name)
+{
+       struct sysfs_dirent *dir_sd;
+
+       dir_sd = sysfs_get_dirent(kobj->sd, NULL, group_name);
+       if (dir_sd) {
+               sysfs_hash_and_remove(dir_sd, NULL, link_name);
+               sysfs_put(dir_sd);
+       }
+}
+EXPORT_SYMBOL_GPL(sysfs_remove_link_from_group);
 
 EXPORT_SYMBOL_GPL(sysfs_create_group);
 EXPORT_SYMBOL_GPL(sysfs_update_group);