linux-kernel - [PATCH 6/14] ARM / SA1100: Use struct syscore

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Message-Id: <201104172310.02794.rjw@sisk.pl>
Date:	Sun, 17 Apr 2011 23:10:02 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Greg KH <gregkh@...e.de>, Kay Sievers <kay.sievers@...e.de>,
	Linux PM mailing list <linux-pm@...ts.linux-foundation.org>,
	Russell King <linux@....linux.org.uk>,
	linux-omap@...r.kernel.org, Kevin Hilman <khilman@...com>,
	linux-arm-kernel@...ts.infradead.org,
	Ben Dooks <ben-linux@...ff.org>,
	Mike Frysinger <vapier@...too.org>,
	Ralf Baechle <ralf@...ux-mips.org>,
	"Hans-Christian Egtvedt" <hans-christian.egtvedt@...el.com>,
	Guan Xuetao <gxt@...c.pku.edu.cn>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev@...ts.ozlabs.org, Jiri Kosina <jkosina@...e.cz>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
Subject: [PATCH 6/14] ARM / SA1100: Use struct syscore_ops for "core" power management

From: Rafael J. Wysocki <rjw@...k.pl>

Replace the sysdev class and struct sys_device used for power
management by the SA1100 interrupt-handling code with a
struct syscore_ops object which is simpler.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 arch/arm/mach-sa1100/irq.c |   19 ++++++-------------
 1 file changed, 6 insertions(+), 13 deletions(-)

Index: linux-2.6/arch/arm/mach-sa1100/irq.c
===================================================================
--- linux-2.6.orig/arch/arm/mach-sa1100/irq.c
+++ linux-2.6/arch/arm/mach-sa1100/irq.c
@@ -14,7 +14,7 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/ioport.h>
-#include <linux/sysdev.h>
+#include <linux/syscore_ops.h>
 
 #include <mach/hardware.h>
 #include <asm/mach/irq.h>
@@ -234,7 +234,7 @@ static struct sa1100irq_state {
 	unsigned int	iccr;
 } sa1100irq_state;
 
-static int sa1100irq_suspend(struct sys_device *dev, pm_message_t state)
+static int sa1100irq_suspend(void)
 {
 	struct sa1100irq_state *st = &sa1100irq_state;
 
@@ -264,7 +264,7 @@ static int sa1100irq_suspend(struct sys_
 	return 0;
 }
 
-static int sa1100irq_resume(struct sys_device *dev)
+static void sa1100irq_resume(void)
 {
 	struct sa1100irq_state *st = &sa1100irq_state;
 
@@ -277,24 +277,17 @@ static int sa1100irq_resume(struct sys_d
 
 		ICMR = st->icmr;
 	}
-	return 0;
 }
 
-static struct sysdev_class sa1100irq_sysclass = {
-	.name		= "sa11x0-irq",
+static struct syscore_ops sa1100irq_syscore_ops = {
 	.suspend	= sa1100irq_suspend,
 	.resume		= sa1100irq_resume,
 };
 
-static struct sys_device sa1100irq_device = {
-	.id		= 0,
-	.cls		= &sa1100irq_sysclass,
-};
-
 static int __init sa1100irq_init_devicefs(void)
 {
-	sysdev_class_register(&sa1100irq_sysclass);
-	return sysdev_register(&sa1100irq_device);
+	register_syscore_ops(&sa1100irq_syscore_ops);
+	return 0;
 }
 
 device_initcall(sa1100irq_init_devicefs);

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