mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
46 lines
813 B
C
46 lines
813 B
C
|
#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 */
|