#ifndef _LINUX_ERR_H #define _LINUX_ERR_H /* XXX U-BOOT XXX */ #if 0 #include <linux/compiler.h> #else #include <linux/mtd/compat.h> #endif #include <asm/errno.h> /* * Kernel pointers have redundant information, so we can use a * scheme where we can return either an error code or a dentry * pointer with the same return value. * * This should be a per-architecture thing, to allow different * error and pointer decisions. */ #define MAX_ERRNO 4095 #ifndef __ASSEMBLY__ #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO) static inline void *ERR_PTR(long error) { return (void *) error; } static inline long PTR_ERR(const void *ptr) { return (long) ptr; } static inline long IS_ERR(const void *ptr) { return IS_ERR_VALUE((unsigned long)ptr); } #endif #endif /* _LINUX_ERR_H */