Re: [PATCH] x86, efi: Fix a build warning

From: Ingo Molnar
Date: Thu Apr 25 2013 - 04:15:08 EST

* Matt Fleming <matt.fleming@xxxxxxxxx> wrote:

> On 25/04/13 07:55, Ingo Molnar wrote:
> > It's a basic cleanliness and robustness issue: we generally avoid type
> > casts in the kernel, because type casts override compile-time type checks
> > and are easy to get wrong. They are also ugly.
> >
> > So in generaly we try to use the right type for the data structure, which
> > matches its usage (and standardize functions/methods around that type) -
> > then no cast is needed.
> Yeah, I'm not advocating using casts, I was just saying "Oh, x86-64
> avoids requiring the caller of efi_call_phys* to perform the cast by
> doing it in the definition of efi_call*. That's why this is only
> affecting 32-bit."
> Cleaning this up would be nice. I think at this point, I'll apply
> Borislav's patch, and fix all this casting after v3.9 is released, since
> instead of just changing query_variable_info, we might as well change
> everything in efi_runtime_service_t so that it's consistent.

Sounds fine to me.


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