linux-kernel - [PATCH] sh: Eliminate unused irq_reg

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Message-Id: <1422180711-18976-1-git-send-email-geert+renesas@glider.be>
Date:	Sun, 25 Jan 2015 11:11:51 +0100
From:	Geert Uytterhoeven <geert+renesas@...der.be>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Kevin Cernekee <cernekee@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>, linux-sh@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH] sh: Eliminate unused irq_reg_{readl,writel} accessors

From: Kevin Cernekee <cernekee@...il.com>

Defining these macros way down in arch/sh/.../irq.c doesn't cause
kernel/irq/generic-chip.c to use them.  As far as I can tell this code
has no effect.

Signed-off-by: Kevin Cernekee <cernekee@...il.com>
Tested-by: Geert Uytterhoeven <geert+renesas@...der.be> (cpp/asm comparison)

As of commit 332fd7c4fef5f3b1 ("genirq: Generic chip: Change
irq_reg_{readl,writel} arguments") they cause build errors in
se7722_defconfig:

    In file included from arch/sh/boards/mach-se/7722/irq.c:18:0:
    include/linux/irq.h:847:91: error: conflicting types for 'iowrite16'
    include/asm-generic/iomap.h:35:13: note: previous declaration of 'iowrite16' was here
    include/linux/irq.h:856:90: error: conflicting types for 'ioread16'
    include/asm-generic/iomap.h:29:21: note: previous declaration of 'ioread16' was here
    arch/sh/boards/mach-se/7722/irq.c: In function 'se7722_irq_demux':
    arch/sh/boards/mach-se/7722/irq.c:43:2: error: too few arguments to function 'ioread16'
    include/linux/irq.h:856:90: note: declared here

and se7343_defconfig:

    In file included from arch/sh/boards/mach-se/7343/irq.c:21:0:
    include/linux/irq.h:847:91: error: conflicting types for 'iowrite16'
    include/asm-generic/iomap.h:35:13: note: previous declaration of 'iowrite16' was here
    include/linux/irq.h:856:90: error: conflicting types for 'ioread16'
    include/asm-generic/iomap.h:29:21: note: previous declaration of 'ioread16' was here
    arch/sh/boards/mach-se/7343/irq.c: In function 'se7343_irq_demux':
    arch/sh/boards/mach-se/7343/irq.c:44:2: error: too few arguments to function 'ioread16'
    include/linux/irq.h:856:90: note: declared here

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Fixes: 332fd7c4fef5f3b1 ("genirq: Generic chip: Change irq_reg_{readl,writel} arguments")
---
Fixes se7722_defconfig and se7343_defconfig
http://kisskb.ellerman.id.au/kisskb/buildresult/12350978/
http://kisskb.ellerman.id.au/kisskb/buildresult/12350973/
---
 arch/sh/boards/mach-se/7343/irq.c | 3 ---
 arch/sh/boards/mach-se/7722/irq.c | 3 ---
 2 files changed, 6 deletions(-)

diff --git a/arch/sh/boards/mach-se/7343/irq.c b/arch/sh/boards/mach-se/7343/irq.c
index 7646bf0486c2c9b1..1087dba9b0152317 100644
--- a/arch/sh/boards/mach-se/7343/irq.c
+++ b/arch/sh/boards/mach-se/7343/irq.c
@@ -14,9 +14,6 @@
 #define DRV_NAME "SE7343-FPGA"
 #define pr_fmt(fmt) DRV_NAME ": " fmt
 
-#define irq_reg_readl	ioread16
-#define irq_reg_writel	iowrite16
-
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
diff --git a/arch/sh/boards/mach-se/7722/irq.c b/arch/sh/boards/mach-se/7722/irq.c
index f5e2af1bf040ff93..00e699232621dccf 100644
--- a/arch/sh/boards/mach-se/7722/irq.c
+++ b/arch/sh/boards/mach-se/7722/irq.c
@@ -11,9 +11,6 @@
 #define DRV_NAME "SE7722-FPGA"
 #define pr_fmt(fmt) DRV_NAME ": " fmt
 
-#define irq_reg_readl	ioread16
-#define irq_reg_writel	iowrite16
-
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
-- 
1.9.1

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