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Commit 168b5251 authored by Wim Van Sebroeck's avatar Wim Van Sebroeck
Browse files

[WATCHDOG] change reboot_notifier to platform-shutdown method. 



Platform device drivers can use the .shutdown method to handle soft
shutdown's instead of reboot_notifier's.

Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent 42747d71

drivers/watchdog/bfin_wdt.c

+15 −37
Original line number Diff line number Diff line
@@ -19,8 +19,6 @@ 
#include <linux/miscdevice.h>

#include <linux/watchdog.h>

#include <linux/fs.h>

#include <linux/notifier.h>

#include <linux/reboot.h>

#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/uaccess.h>
@@ -309,26 +307,6 @@ static long bfin_wdt_ioctl(struct file *file, 
	}

}



/**

 *	bfin_wdt_notify_sys - Notifier Handler

 *	@this: notifier block

 *	@code: notifier event

 *	@unused: unused

 *

 *	Handles specific events, such as turning off the watchdog during a

 *	shutdown event.

 */

static int bfin_wdt_notify_sys(struct notifier_block *this,

					unsigned long code, void *unused)

{

	stampit();



	if (code == SYS_DOWN || code == SYS_HALT)

		bfin_wdt_stop();



	return NOTIFY_DONE;

}



#ifdef CONFIG_PM

static int state_before_suspend;
@@ -395,33 +373,21 @@ static const struct watchdog_info bfin_wdt_info = { 
		    WDIOF_MAGICCLOSE,

};



static struct notifier_block bfin_wdt_notifier = {

	.notifier_call = bfin_wdt_notify_sys,

};



/**

 *	bfin_wdt_probe - Initialize module

 *

 *	Registers the misc device and notifier handler.  Actual device

 *	Registers the misc device.  Actual device

 *	initialization is handled by bfin_wdt_open().

 */

static int __devinit bfin_wdt_probe(struct platform_device *pdev)

{

	int ret;



	ret = register_reboot_notifier(&bfin_wdt_notifier);

	if (ret) {

		pr_devinit(KERN_ERR PFX

			"cannot register reboot notifier (err=%d)\n", ret);

		return ret;

	}



	ret = misc_register(&bfin_wdt_miscdev);

	if (ret) {

		pr_devinit(KERN_ERR PFX

			"cannot register miscdev on minor=%d (err=%d)\n",

				WATCHDOG_MINOR, ret);

		unregister_reboot_notifier(&bfin_wdt_notifier);

		return ret;

	}
@@ -434,21 +400,33 @@ static int __devinit bfin_wdt_probe(struct platform_device *pdev) 
/**

 *	bfin_wdt_remove - Initialize module

 *

 *	Unregisters the misc device and notifier handler.  Actual device

 *	Unregisters the misc device.  Actual device

 *	deinitialization is handled by bfin_wdt_close().

 */

static int __devexit bfin_wdt_remove(struct platform_device *pdev)

{

	misc_deregister(&bfin_wdt_miscdev);

	unregister_reboot_notifier(&bfin_wdt_notifier);

	return 0;

}



/**

 *	bfin_wdt_shutdown - Soft Shutdown Handler

 *

 *	Handles the soft shutdown event.

 */

static void bfin_wdt_shutdown(struct platform_device *pdev)

{

	stampit();



	bfin_wdt_stop();

}



static struct platform_device *bfin_wdt_device;



static struct platform_driver bfin_wdt_driver = {

	.probe     = bfin_wdt_probe,

	.remove    = __devexit_p(bfin_wdt_remove),

	.shutdown  = bfin_wdt_shutdown,

	.suspend   = bfin_wdt_suspend,

	.resume    = bfin_wdt_resume,

	.driver    = {

drivers/watchdog/txx9wdt.c

+6 −19
Original line number Diff line number Diff line
@@ -13,7 +13,6 @@ 
#include <linux/miscdevice.h>

#include <linux/watchdog.h>

#include <linux/fs.h>

#include <linux/reboot.h>

#include <linux/init.h>

#include <linux/uaccess.h>

#include <linux/platform_device.h>
@@ -166,14 +165,6 @@ static long txx9wdt_ioctl(struct file *file, unsigned int cmd, 
	}

}



static int txx9wdt_notify_sys(struct notifier_block *this, unsigned long code,

	void *unused)

{

	if (code == SYS_DOWN || code == SYS_HALT)

		txx9wdt_stop();

	return NOTIFY_DONE;

}



static const struct file_operations txx9wdt_fops = {

	.owner		=	THIS_MODULE,

	.llseek		=	no_llseek,
@@ -189,10 +180,6 @@ static struct miscdevice txx9wdt_miscdev = { 
	.fops	=	&txx9wdt_fops,

};



static struct notifier_block txx9wdt_notifier = {

	.notifier_call = txx9wdt_notify_sys,

};



static int __init txx9wdt_probe(struct platform_device *dev)

{

	struct resource *res;
@@ -221,13 +208,8 @@ static int __init txx9wdt_probe(struct platform_device *dev) 
	if (!txx9wdt_reg)

		goto exit_busy;



	ret = register_reboot_notifier(&txx9wdt_notifier);

	if (ret)

		goto exit;



	ret = misc_register(&txx9wdt_miscdev);

	if (ret) {

		unregister_reboot_notifier(&txx9wdt_notifier);

		goto exit;

	}
@@ -249,14 +231,19 @@ static int __init txx9wdt_probe(struct platform_device *dev) 
static int __exit txx9wdt_remove(struct platform_device *dev)

{

	misc_deregister(&txx9wdt_miscdev);

	unregister_reboot_notifier(&txx9wdt_notifier);

	clk_disable(txx9_imclk);

	clk_put(txx9_imclk);

	return 0;

}



static void txx9wdt_shutdown(struct platform_device *dev)

{

	txx9wdt_stop();

}



static struct platform_driver txx9wdt_driver = {

	.remove = __exit_p(txx9wdt_remove),

	.shutdown = txx9wdt_shutdown,

	.driver = {

		.name = "txx9wdt",

		.owner = THIS_MODULE,