| /* SPDX-License-Identifier: GPL-2.0 */ | |
| #ifndef __ERR_H__ | |
| #define __ERR_H__ | |
| #define MAX_ERRNO 4095 | |
| #define IS_ERR_VALUE(x) (unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO | |
| static inline int IS_ERR_OR_NULL(const void *ptr) | |
| { | |
| return !ptr || IS_ERR_VALUE((unsigned long)ptr); | |
| } | |
| static inline long PTR_ERR(const void *ptr) | |
| { | |
| return (long) ptr; | |
| } | |
| #endif /* __ERR_H__ */ |