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 db8d5955bad47542f17c24c9186bc3c56be46403..a2172f6904180fd9f30d63cfd3cab2448ab9c856 100644 (file)
--- 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;