linux-kernel - Re: [PATCH v3 15/20] ARM: LPAE: use phys_addr_t instead of unsigned long for physical addresses

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Message-Id: <201011171218.13910.arnd@arndb.de>
Date:	Wed, 17 Nov 2010 12:18:13 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	"Russell King - ARM Linux" <linux@....linux.org.uk>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Will Deacon <will.deacon@....com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 15/20] ARM: LPAE: use phys_addr_t instead of unsigned long for physical addresses

On Wednesday 17 November 2010, Catalin Marinas wrote:
> >
> > It may make sense to mark it const volatile, as that's the most
> > permissive set of attributes possible (iow, it'll accept any pointer
> > without warning.)  However, might be an idea to check what other
> > arches do.
> 
> The majority of architectures use volatile and a few add both const
> and volatile.
> 
> I usually use the generic headers as reference for function prototypes
> and that's just using volatile without a const (cc'ing Arnd for any
> view on this).

const volatile sounds right here, I can also change the generic header
if we agree to do the same in arm.

	Arnd
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