err.h: Add PTR_ERR_OR_ZERO from kernel
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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@ -52,6 +52,14 @@ static inline void *ERR_CAST(const void *ptr)
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return (void *) ptr;
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}
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static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr)
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{
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if (IS_ERR(ptr))
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return PTR_ERR(ptr);
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else
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return 0;
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}
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#endif
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#endif /* _LINUX_ERR_H */
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