From:   Michael Ellerman <mpe@ellerman.id.au>
To:     Arnd Bergmann <arnd@arndb.de>,
        Geert Uytterhoeven <geert@linux-m68k.org>
Cc:     Linux-Arch <linux-arch@vger.kernel.org>,
        Baoquan He <bhe@redhat.com>, linux-sh@vger.kernel.org,
        linux-m68k@lists.linux-m68k.org, linux-hexagon@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
        Christoph Hellwig <hch@infradead.org>, linux-mm@kvack.org,
        Luis Chamberlain <mcgrof@kernel.org>,
        linux-parisc@vger.kernel.org, linux-alpha@vger.kernel.org,
        sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v3 2/2] arch/*/io.h: remove ioremap_uc in some
 architectures
In-Reply-To: <5dec69d0-0bc9-4f6c-8d0d-ee5422783100@app.fastmail.com>
References: <20230303102817.212148-1-bhe@redhat.com>
 <20230303102817.212148-3-bhe@redhat.com>
 <87sfej1rie.fsf@mpe.ellerman.id.au>
 <CAMuHMdXoM24uAZGcjBtscNMOSY_+4u08PEOR7gOfCH7jvCceDg@mail.gmail.com>
 <5dec69d0-0bc9-4f6c-8d0d-ee5422783100@app.fastmail.com>
Date:   Tue, 07 Mar 2023 11:58:27 +1100
Message-ID: <87jzzt1ioc.fsf@mpe.ellerman.id.au>
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"Arnd Bergmann" <arnd@arndb.de> writes:
> On Sun, Mar 5, 2023, at 10:29, Geert Uytterhoeven wrote:
>> On Sun, Mar 5, 2023 at 10:23=E2=80=AFAM Michael Ellerman <mpe@ellerman.i=
d.au> wrote:
>>> Maybe that exact code path is only reachable on x86/ia64? But if so
>>> please explain why.
>>>
>>> Otherwise it looks like this series could break that driver on powerpc
>>> at least.
>>
>> Indeed.
>
> When I last looked into this, I sent a patch to use ioremap()
> on non-x86:
>
> https://lore.kernel.org/all/20191111192258.2234502-1-arnd@arndb.de/

OK thanks.

Baoquan can you add that patch to the start of this series if/when you
post the next version?

cheers