#ifndef ERR_H#define ERR_H#define MAX_ERRNO	4095 #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO) static inline void * __must_check ERR_PTR(long error){	return (void *) error;} static inline long __must_check PTR_ERR(const void *ptr){	return (long) ptr;} static inline long __must_check IS_ERR(const void *ptr){	return IS_ERR_VALUE((unsigned long)ptr);} static inline long __must_check IS_ERR_OR_NULL(const void *ptr){	return !ptr || IS_ERR_VALUE((unsigned long)ptr);}#endif /* ERR_H */