linux-kernel - Re: [PATCH] arch/*/io.h: Add ioremap

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Date:	Wed, 29 Jul 2015 13:09:11 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>
Cc:	mingo@...e.hu, akpm@...ux-foundation.org, bp@...e.de,
	tglx@...utronix.de, hpa@...or.com, peterz@...radead.org,
	dan.j.williams@...el.com, linux-next@...r.kernel.org,
	arnd@...db.de, linux-kernel@...r.kernel.org,
	benh@...nel.crashing.org, "Luis R. Rodriguez" <mcgrof@...e.com>
Subject: Re: [PATCH] arch/*/io.h: Add ioremap_uc() to all architectures

Hi Luis,

On Tue, 28 Jul 2015 11:22:07 -0700 "Luis R. Rodriguez" <mcgrof@...not-panic.com> wrote:
>
> From: "Luis R. Rodriguez" <mcgrof@...e.com>
> 
> This adds ioremap_uc() only for architectures that do not
> include asm-generic.h/io.h as that already provides a default
> definition for them for both cases where you have CONFIG_MMU
> and you do not, and because of this, the number of architectures
> this patch address is less than the architectures that the
> ioremap_wt() patch addressed, "arch/*/io.h: Add ioremap_wt() to all
> architectures").
> 
> In order to reduce the number of architectures we have to
> modify when adding new architecture IO APIs we'll have to review
> the architectures in this patch, see why they can't add
> asm-generic.h/io.h or issues that would be created by doing
> so and then spread a consistent inclusion of this header
> towards the end of their own header. For instance arch/metag
> includes the asm-generic/io.h *before* the ioremap*()
> definitions, this should be the other way around but only
> once we have guard wrappers for the non-MMU case also for
> asm-generic/io.h.
> 
> Cc: Arnd Bergmann <arnd@...db.de>
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Signed-off-by: Luis R. Rodriguez <mcgrof@...e.com>
> ---
>  arch/avr32/include/asm/io.h   | 1 +
>  arch/frv/include/asm/io.h     | 1 +
>  arch/m32r/include/asm/io.h    | 1 +
>  arch/m68k/include/asm/io_mm.h | 1 +
>  arch/mn10300/include/asm/io.h | 1 +
>  arch/powerpc/include/asm/io.h | 1 +
>  arch/sh/include/asm/io.h      | 1 +
>  arch/tile/include/asm/io.h    | 1 +
>  8 files changed, 8 insertions(+)

I have added this to linux-next today instead of reverting the other 2
patches.

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
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