#ifndef _LINUX_ERR_H
#define _LINUX_ERR_H
+#include <linux/compiler.h>
+
#include <asm/errno.h>
/*
* 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 IS_ERR(const void *ptr)
{
- return (unsigned long)ptr > (unsigned long)-1000L;
+ return IS_ERR_VALUE((unsigned long)ptr);
}
+#endif
+
#endif /* _LINUX_ERR_H */