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Message-ID: <Y+40p3oegc2Of9w2@casper.infradead.org>
Date:   Thu, 16 Feb 2023 13:50:31 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Baoquan He <bhe@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        akpm@...ux-foundation.org, christophe.leroy@...roup.eu,
        hch@...radead.org, agordeev@...ux.ibm.com,
        wangkefeng.wang@...wei.com, schnelle@...ux.ibm.com,
        David.Laight@...lab.com, shorne@...il.com, arnd@...db.de,
        "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
        Helge Deller <deller@....de>, linux-parisc@...r.kernel.org
Subject: Re: [PATCH v4 12/16] parisc: mm: Convert to GENERIC_IOREMAP

On Thu, Feb 16, 2023 at 08:34:15PM +0800, Baoquan He wrote:
> Meanwhile, add macro ARCH_HAS_IOREMAP_WC since the added ioremap_wc()
> will conflict with the one in include/asm-generic/iomap.h, then an
> compiling error is seen:

Huh?  ARCH_HAS_IOREMAP_WC comes up nowhere else in this patchset, and
the current definition of ioremap_wc() is guarded by an ifndef ioremap_wc

> +#define ioremap_wc(addr, size)  \
> +	ioremap_prot((addr), (size), _PAGE_IOREMAP)

This should be enough all by itself.

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