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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ERR_H__
#define __ERR_H__
#define MAX_ERRNO 4095
#define IS_ERR_VALUE(x) (unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO
#define __STR(x) #x
#define set_if_not_errno_or_zero(x, y) \
({ \
asm volatile ("if %0 s< -4095 goto +1\n" \
"if %0 s<= 0 goto +1\n" \
"%0 = " __STR(y) "\n" \
: "+r"(x)); \
})
static inline int IS_ERR_OR_NULL(const void *ptr)
{
return !ptr || IS_ERR_VALUE((unsigned long)ptr);
}
static inline long PTR_ERR(const void *ptr)
{
return (long) ptr;
}
#endif /* __ERR_H__ */
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