From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Mon, 26 Mar 2012 21:27:33 +0000 (+0200)
Subject: PM / shmobile: Make MTU2 driver use pm_genpd_dev_always_on()
X-Git-Tag: v3.3.1~46
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7564963150c0cf52d3d47add3d422f3ade202699;p=thirdparty%2Fkernel%2Fstable.git

PM / shmobile: Make MTU2 driver use pm_genpd_dev_always_on()

Commit 57d13370cfaf6017c68981e66ff5b3bf20a2705c upstream.

Make the MTU2 clocksource driver mark its device as "always on"
using pm_genpd_dev_always_on() to protect it from surprise power
removals.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c
index db8d5955bad47..a2172f6904180 100644
--- a/drivers/clocksource/sh_mtu2.c
+++ b/drivers/clocksource/sh_mtu2.c
@@ -31,6 +31,7 @@
 #include <linux/sh_timer.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/pm_domain.h>
 
 struct sh_mtu2_priv {
 	void __iomem *mapbase;
@@ -306,6 +307,9 @@ static int __devinit sh_mtu2_probe(struct platform_device *pdev)
 	struct sh_mtu2_priv *p = platform_get_drvdata(pdev);
 	int ret;
 
+	if (!is_early_platform_device(pdev))
+		pm_genpd_dev_always_on(&pdev->dev, true);
+
 	if (p) {
 		dev_info(&pdev->dev, "kept as earlytimer\n");
 		return 0;