Commit fa9ee9c4 authored Mar 22, 2011 by Uwe Kleine-König Committed by Linus Torvalds Mar 22, 2011

include/linux/err.h: add a function to cast error-pointers to a return value



PTR_RET() can be used if you have an error-pointer and are only interested
in the eventual error value, but not the pointer.  Yields the usual 0 for
no error, -ESOMETHING otherwise.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent d404ab0a

include/linux/err.h

+8 −0

Original line number	Original line	Diff line number	Diff line
	@@ -52,6 +52,14 @@ static inline void * __must_check ERR_CAST(const void *ptr)
	return (void *) ptr;		return (void *) ptr;
	}		}

			static inline int __must_check PTR_RET(const void *ptr)
			{
			if (IS_ERR(ptr))
			return PTR_ERR(ptr);
			else
			return 0;
			}

	#endif		#endif

	#endif /* _LINUX_ERR_H */		#endif /* _LINUX_ERR_H */