linux-kernel - [PATCH 2/4] tpm_atmel: Use struct dev_pm

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Message-Id: <201207050010.31787.rjw@sisk.pl>
Date:	Thu, 5 Jul 2012 00:10:31 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Linux PM list <linux-pm@...r.kernel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	tpmdd-devel@...ts.sourceforge.net,
	Debora Velarde <debora@...ux.vnet.ibm.com>,
	Rajiv Andrade <srajiv@...ux.vnet.ibm.com>,
	Marcel Selhorst <m.selhorst@...rix.com>
Subject: [PATCH 2/4] tpm_atmel: Use struct dev_pm_ops for power management

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

Make the tpm_atmel driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct platform_driver.

This allows the driver to use tpm_pm_suspend() and tpm_pm_resume()
as its PM callbacks directly, without defining its own PM callback
routines.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 drivers/char/tpm/tpm_atmel.c |   12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

Index: linux/drivers/char/tpm/tpm_atmel.c
===================================================================
--- linux.orig/drivers/char/tpm/tpm_atmel.c
+++ linux/drivers/char/tpm/tpm_atmel.c
@@ -168,22 +168,14 @@ static void atml_plat_remove(void)
 	}
 }
 
-static int tpm_atml_suspend(struct platform_device *dev, pm_message_t msg)
-{
-	return tpm_pm_suspend(&dev->dev);
-}
+static SIMPLE_DEV_PM_OPS(tpm_atml_pm, tpm_pm_suspend, tpm_pm_resume);
 
-static int tpm_atml_resume(struct platform_device *dev)
-{
-	return tpm_pm_resume(&dev->dev);
-}
 static struct platform_driver atml_drv = {
 	.driver = {
 		.name = "tpm_atmel",
 		.owner		= THIS_MODULE,
+		.pm		= &tpm_atml_pm,
 	},
-	.suspend = tpm_atml_suspend,
-	.resume = tpm_atml_resume,
 };
 
 static int __init init_atmel(void)

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