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

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Message-Id: <201207050012.38942.rjw@sisk.pl>
Date:	Thu, 5 Jul 2012 00:12:38 +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 4/4] tpm_nsc: Use struct dev_pm_ops for power management

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

Make the tpm_nsc 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_nsc.c |   13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

Index: linux/drivers/char/tpm/tpm_nsc.c
===================================================================
--- linux.orig/drivers/char/tpm/tpm_nsc.c
+++ linux/drivers/char/tpm/tpm_nsc.c
@@ -274,22 +274,13 @@ static void tpm_nsc_remove(struct device
 	}
 }
 
-static int tpm_nsc_suspend(struct platform_device *dev, pm_message_t msg)
-{
-	return tpm_pm_suspend(&dev->dev);
-}
-
-static int tpm_nsc_resume(struct platform_device *dev)
-{
-	return tpm_pm_resume(&dev->dev);
-}
+static SIMPLE_DEV_PM_OPS(tpm_nsc_pm, tpm_pm_suspend, tpm_pm_resume);
 
 static struct platform_driver nsc_drv = {
-	.suspend         = tpm_nsc_suspend,
-	.resume          = tpm_nsc_resume,
 	.driver          = {
 		.name    = "tpm_nsc",
 		.owner   = THIS_MODULE,
+		.pm      = &tpm_nsc_pm,
 	},
 };
 

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