[PATCH v8 3/4] gpio: rpmsg: add generic rpmsg GPIO driver

[Andrew Lunn]

> Example: 32‑bit ARM vs 64‑bit ARM (AArch32 vs AArch64)
> Consider this message header:
> struct msg_hdr {    
>     u8  id;
>     u32 size;
>     u8  flags;
> };

That is just a bad design. The point of not allowing __packed is that
it forces you to design your structures correctly. Maybe AI has no
idea of taste, but Maintainer do and would not allow a u32 to be
unaligned like this.

   Andrew