40             if let Err(e) = self.do_create_group(kobj, group, update) {  in do_create_groups()
48                 return Err(e);  in do_create_groups()
87                     .map_err(|e| {  in do_create_group()
88                         if e == SystemError::EEXIST {  in do_create_group()
91                         e  in do_create_group()
98         if let Err(e) = self.group_create_files(parent_inode.clone(), kobj, group, update) {  in do_create_group()
102             return Err(e);  in do_create_group()
139                 .map_err(|e| {  in remove_group()
141                     e  in remove_group()
175         let mut e = Ok(());  in group_create_files()  localVariable
200             e = sysfs_instance().add_file_with_mode(&parent, *attr, mode);  in group_create_files()
201             if e.is_err() {  in group_create_files()
206         if let Err(e) = e {  in group_create_files()
212             return Err(e);  in group_create_files()