linux-kernel - Re: [PATCH] sparc: io_64.h: Replace io function-link macros

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Date:	Fri, 30 Jan 2015 18:07:02 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	ricardo.ribalda@...il.com
Cc:	arnd@...db.de, will.deacon@....com, sparclinux@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sparc: io_64.h: Replace io function-link macros

From: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
Date: Thu, 29 Jan 2015 15:52:02 +0100

> Function like macros cannot be assigned to function pointers. This patch
> convert the function-like macros into object-macros, that the
> precompiler will replace with the name of the final function.
> 
> With this patch this kind of code will work:
> 
> if (priv->mode_big_endian)
> 	priv.read = ioread32be;
> else
> 	priv.read = ioread32;
> 
> Same approach has been taken on asm-generic/io.h
> 
> Reported-by: kbuild test robot <fengguang.wu@...el.com>
> Fixes: 99082eab63449f9d spi/xilinx: Remove iowrite/ioread wrappers
> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>

Acked-by: David S. Miller <davem@...emloft.net>
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