Re: [RFC] include/linux/make_type.h: Helpers for making u16/u32/u64 values

[Alexey Dobriyan]

> +#define make_u16(hi__, lo__)  ((u16)(u8)(hi__) << 8 | (u8)(lo__))

	Public Service Announcement

Identifiers representing macro arguments generally don't need to be
undescored. They are local to the macro, they don't leak outside.

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Firstly, make_u16() doesn't return u16.

Secondly,

	#define make_u64(hi__, lo__)  ((u64)(hi__) << 32 | (u32)(lo__))

doesn't truncate hi, why?