/* 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 #define __STR(x) #x #define set_if_not_errno_or_zero(x, y) \ ({ \ asm volatile ("if %0 s< -4095 goto +1\n" \ "if %0 s<= 0 goto +1\n" \ "%0 = " __STR(y) "\n" \ : "+r"(x)); \ }) 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__ */