From mboxrd@z Thu Jan  1 00:00:00 1970
From: Geert Uytterhoeven <geert@linux-m68k.org>
Subject: Re: [PATCH 1/2] hexagon: define ioremap_uc
Date: Tue, 10 Dec 2019 09:09:05 +0100
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References: <20191209222956.239798-1-ndesaulniers@google.com> <20191209222956.239798-2-ndesaulniers@google.com>
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To: Nick Desaulniers <ndesaulniers@google.com>
Cc: bcain@codeaurora.org, Lee Jones <lee.jones@linaro.org>, Andy Shevchenko <andriy.shevchenko@linux.intel.com>, ztuowen@gmail.com, Mika Westerberg <mika.westerberg@linux.intel.com>, "Luis R. Rodriguez" <mcgrof@kernel.org>, Greg KH <gregkh@linuxfoundation.org>, alexios.zavras@intel.com, Allison Randal <allison@lohutok.net>, Will Deacon <will@kernel.org>, rfontana@redhat.com, Thomas Gleixner <tglx@linutronix.de>, Peter Zijlstra <peterz@infradead.org>, Boqun Feng <boqun.feng@gmail.com>, Ingo Molnar <mingo@redhat.com>, Andrew Morton <akpm@linux-foundation.org>, "open list:QUALCOMM HEXAGON..." <linux-hexagon@vger.kernel.org>, clang-built-linux <clang-built-linux@googlegroups.com>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Nathan Chancellor <natechanc>

On Mon, Dec 9, 2019 at 11:30 PM Nick Desaulniers
<ndesaulniers@google.com> wrote:
> Similar to
> commit 38e45d81d14e ("sparc64: implement ioremap_uc")
> define ioremap_uc for hexagon to avoid errors from
> -Wimplicit-function-definition.
>
> Fixes: e537654b7039 ("lib: devres: add a helper function for ioremap_uc")
> Link: https://github.com/ClangBuiltLinux/linux/issues/797
> Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
> ---
>  arch/hexagon/include/asm/io.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/hexagon/include/asm/io.h b/arch/hexagon/include/asm/io.h
> index 539e3efcf39c..b0dbc3473172 100644
> --- a/arch/hexagon/include/asm/io.h
> +++ b/arch/hexagon/include/asm/io.h
> @@ -173,6 +173,7 @@ static inline void writel(u32 data, volatile void __iomem *addr)
>
>  void __iomem *ioremap(unsigned long phys_addr, unsigned long size);
>  #define ioremap_nocache ioremap
> +#define ioremap_uc(X, Y) ioremap((X), (Y))

Do we really need this? There is only one user of ioremap_uc(), which
Christoph is trying hard to get rid of, and the new devres helper that
triggers all of this :-(
https://lore.kernel.org/dri-devel/20191112105507.GA7122@lst.de/

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds