LXR linux/tools/virtio/linux/err.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef ERR_H
   3#define ERR_H
   4#define MAX_ERRNO       4095
   5
   6#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
   7
   8static inline void * __must_check ERR_PTR(long error)
   9{
  10        return (void *) error;
  11}
  12
  13static inline long __must_check PTR_ERR(const void *ptr)
  14{
  15        return (long) ptr;
  16}
  17
  18static inline long __must_check IS_ERR(const void *ptr)
  19{
  20        return IS_ERR_VALUE((unsigned long)ptr);
  21}
  22
  23static inline long __must_check IS_ERR_OR_NULL(const void *ptr)
  24{
  25        return !ptr || IS_ERR_VALUE((unsigned long)ptr);
  26}
  27#endif /* ERR_H */
  28