linux-kernel - Re: [PATCH v6 11/19] sh: add <asm-generic/io.h> including

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Date:   Fri, 9 Jun 2023 16:34:14 +0800
From:   Baoquan He <bhe@...hat.com>
To:     John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-mm@...ck.org, arnd@...db.de, christophe.leroy@...roup.eu,
        hch@....de, rppt@...nel.org, willy@...radead.org,
        agordeev@...ux.ibm.com, wangkefeng.wang@...wei.com,
        schnelle@...ux.ibm.com, David.Laight@...lab.com, shorne@...il.com,
        deller@....de, Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>, linux-sh@...r.kernel.org
Subject: Re: [PATCH v6 11/19] sh: add <asm-generic/io.h> including

On 06/09/23 at 10:10am, John Paul Adrian Glaubitz wrote:
> Hello Baoquan!
> 
> On Fri, 2023-06-09 at 15:55 +0800, Baoquan He wrote:
> > Also add macro definitions for port|mm io functions since SuperH
> > has its own implementation in arch/sh/kernel/iomap.c and
> > arch/sh/include/asm/io_noioport.h. These will conflict with the port|mm io
> > function definitions in include/asm-generic/io.h to cause compiling
> > errors like below:
> 
> What change does the "Also" refer to?

It refers to these kind of macro definitions, this place and those in
other several places. Please correct me if I misused the expression to
cause confusion.

+#define ioread8 ioread8
+#define ioread16 ioread16
+#define ioread16be ioread16be
+#define ioread32 ioread32
+#define ioread32be ioread32be
+
+#define iowrite8 iowrite8
+#define iowrite16 iowrite16
+#define iowrite16be iowrite16be
+#define iowrite32 iowrite32
+#define iowrite32be iowrite32be
+
+#define ioread8_rep ioread8_rep
+#define ioread16_rep ioread16_rep
+#define ioread32_rep ioread32_rep
+
+#define iowrite8_rep iowrite8_rep
+#define iowrite16_rep iowrite16_rep
+#define iowrite32_rep iowrite32_rep