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Commit 8c013d96 authored by Paul Mundt's avatar Paul Mundt
Browse files

watchdog: shwdt: Preliminary runtime PM support. 



This plugs in some trivial runtime PM support in the probe/remove and
start/stop paths.

Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 9ea64046

drivers/watchdog/shwdt.c

+8 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <linux/spinlock.h>

#include <linux/miscdevice.h>

#include <linux/watchdog.h>

#include <linux/pm_runtime.h>

#include <linux/fs.h>

#include <linux/mm.h>

#include <linux/slab.h>
@@ -87,6 +88,8 @@ static int sh_wdt_start(struct watchdog_device *wdt_dev) 
	unsigned long flags;

	u8 csr;



	pm_runtime_get_sync(wdt->dev);



	spin_lock_irqsave(&wdt->lock, flags);



	next_heartbeat = jiffies + (heartbeat * HZ);
@@ -137,6 +140,8 @@ static int sh_wdt_stop(struct watchdog_device *wdt_dev) 


	spin_unlock_irqrestore(&wdt->lock, flags);



	pm_runtime_put_sync(wdt->dev);



	return 0;

}
@@ -283,6 +288,8 @@ static int __devinit sh_wdt_probe(struct platform_device *pdev) 


	dev_info(&pdev->dev, "initialized.\n");



	pm_runtime_enable(&pdev->dev);



	return 0;



out_disable:
@@ -300,6 +307,7 @@ static int __devexit sh_wdt_remove(struct platform_device *pdev) 


	watchdog_unregister_device(&sh_wdt_dev);



	pm_runtime_disable(&pdev->dev);

	clk_disable(wdt->clk);

	clk_put(wdt->clk);