Commit | Line | Data |
---|---|---|
61d0b5a4 RR |
1 | #ifndef ERR_H |
2 | #define ERR_H | |
3 | #define MAX_ERRNO 4095 | |
4 | ||
5 | #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO) | |
6 | ||
7 | static inline void * __must_check ERR_PTR(long error) | |
8 | { | |
9 | return (void *) error; | |
10 | } | |
11 | ||
12 | static inline long __must_check PTR_ERR(const void *ptr) | |
13 | { | |
14 | return (long) ptr; | |
15 | } | |
16 | ||
17 | static inline long __must_check IS_ERR(const void *ptr) | |
18 | { | |
19 | return IS_ERR_VALUE((unsigned long)ptr); | |
20 | } | |
21 | ||
22 | static inline long __must_check IS_ERR_OR_NULL(const void *ptr) | |
23 | { | |
24 | return !ptr || IS_ERR_VALUE((unsigned long)ptr); | |
25 | } | |
26 | #endif /* ERR_H */ |