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Subject[PATCH] include/uapi/linux/swab.h: add __u16 cast to __swab16 conditional
Date
if __HAVE_BUILTIN_BSWAP16__ is defined then __swab16 utilizes a __u16 cast.
This same cast should be used if __HAVE_BUILTIN_BSWAP16__ is not defined as
well. This should fix loads (at least a few) clang -Wformat warnings
specifically with `ntohs()`

Link: https://github.com/ClangBuiltLinux/linux/issues/378
Signed-off-by: Justin Stitt <jstitt007@gmail.com>
---
include/uapi/linux/swab.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
index 7272f85d6d6a..f6be3f2e6fee 100644
--- a/include/uapi/linux/swab.h
+++ b/include/uapi/linux/swab.h
@@ -102,7 +102,7 @@ static inline __attribute_const__ __u32 __fswahb32(__u32 val)
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
#else
#define __swab16(x) \
- (__builtin_constant_p((__u16)(x)) ? \
+ (__u16)(__builtin_constant_p((__u16)(x)) ? \
___constant_swab16(x) : \
__fswab16(x))
#endif
--
2.30.2
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