128             return Err(SystemError::EINVAL);  in give_back_block()
177             return Err(MmioResult::WRONGEXP);  in query_addr_region()
206                             Err(err) => {  in query_addr_region()
208                                 return Err(err);  in query_addr_region()
225                             Err(err) => {  in query_addr_region()
227                                 return Err(err);  in query_addr_region()
238                     Err(err) => return Err(err),  in query_addr_region()
265                         Err(err) => {  in query_addr_region()
267                             return Err(err);  in query_addr_region()
277                         Err(err) => {  in query_addr_region()
279                             return Err(err);  in query_addr_region()
289                     Err(err) => return Err(err),  in query_addr_region()
292             return Err(MmioResult::ENOFOUND);  in query_addr_region()
296                 Err(err) => return Err(err),  in query_addr_region()
312             Err(err) => {  in mmio_buddy_query_addr_region()
314                 return Err(err);  in mmio_buddy_query_addr_region()
357             return Err(MmioResult::ISEMPTY);  in pop_buddy_block()
373             return Err(MmioResult::ENOFOUND);  in pop_buddy_block()
392         return Err(MmioResult::ISEMPTY);  in pop_block()
416             return Err(MmioResult::EINVAL);  in merge_all_exp()
426                 Err(err) => {  in merge_all_exp()
427                     return Err(err);  in merge_all_exp()
434                         Err(err) => {  in merge_all_exp()
438                             return Err(err);  in merge_all_exp()
466             return Err(MmioResult::EINVAL);  in merge_blocks()
488             return Err(SystemError::EPERM);  in create_mmio()
512             Err(_) => {  in create_mmio()
517                 return Err(SystemError::ENOMEM);  in create_mmio()
537             return Err(SystemError::EINVAL);  in release_mmio()
548             return Err(SystemError::EAGAIN_OR_EWOULDBLOCK);  in release_mmio()
670             return Err(SystemError::EINVAL);  in map_phys()
677             return Err(SystemError::EINVAL);  in map_phys()
700             return Err(SystemError::EINVAL);  in map_phys_with_flags()
707             return Err(SystemError::EINVAL);  in map_phys_with_flags()