From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnd Bergmann <arnd@arndb.de>
Subject: Re: [RFT 06/13] arc: Constify ioreadX() iomem argument (as in generic
 implementation)
Date: Tue, 7 Jan 2020 18:10:07 +0100
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To: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Rich Felker <dalias@libc.org>, Jiri Slaby <jirislaby@gmail.com>, "Michael S. Tsirkin" <mst@redhat.com>, David Airlie <airlied@linux.ie>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, dri-devel <dri-devel@lists.freedesktop.org>, virtualization@lists.linux-foundation.org, "James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>, Networking <netdev@vger.kernel.org>, Paul Mackerras <paulus@samba.org>, linux-arch <linux-arch@vger.kernel.org>, Dave Jiang <dave.jiang@intel.com>, Yoshinori Sato <ysato@users.sourceforge.jp>, Michael Ellerman <mpe@ellerman.id.au>, Helge Deller <deller@gmx.de>, Linux-sh list <linux-sh@vger.kernel.org>, Alexey Brodkin <abrodkin@synopsys.com>, Geert Uytterhoeven <geert@linux-m68k.org>, Ben Skeggs <bskeggs@redhat.com>, ML nouveau <nouveau@lists.freedesktop.org>, Dave Airlie <airlied@redhat.com>, Matt Turner <mattst88@gmail.com>, open lis
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On Tue, Jan 7, 2020 at 5:54 PM Krzysztof Kozlowski <krzk@kernel.org> wrote:
>
> The ioreadX() helpers have inconsistent interface.  On some architectures
> void *__iomem address argument is a pointer to const, on some not.
>
> Implementations of ioreadX() do not modify the memory under the
> address so they can be converted to a "const" version for const-safety
> and consistency among architectures.
>
> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

The patch looks correct, but I would not bother here, as it has no
effect on the compiler or its output.

      Arnd