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27 lines
564 B
27 lines
564 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef ERR_H |
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#define ERR_H |
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#define MAX_ERRNO 4095 |
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#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO) |
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static inline void * __must_check ERR_PTR(long error) |
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{ |
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return (void *) error; |
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} |
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static inline long __must_check PTR_ERR(const void *ptr) |
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{ |
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return (long) ptr; |
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} |
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static inline long __must_check IS_ERR(const void *ptr) |
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{ |
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return IS_ERR_VALUE((unsigned long)ptr); |
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} |
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static inline long __must_check IS_ERR_OR_NULL(const void *ptr) |
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{ |
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return !ptr || IS_ERR_VALUE((unsigned long)ptr); |
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} |
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#endif /* ERR_H */
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