[deliverable/linux.git] / tools / virtio / linux / err.h

#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 */
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 */