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watchdog: shwdt: Migrate from reboot notifier to platform shutdown.

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It's possible to do the same work via the platform driver shutdown
method, so wire that up and dump the reboot notifier.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2012-05-10 14:21:15 +09:00
parent 7ee94d97aa
commit 4096812636
1 changed files with 12 additions and 31 deletions
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43
drivers/watchdog/shwdt.c
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@ -3,7 +3,7 @@
*
* Watchdog driver for integrated watchdog in the SuperH processors.
*
* Copyright (C) 2001 - 2010 Paul Mundt <lethal@linux-sh.org>
* Copyright (C) 2001 - 2012 Paul Mundt <lethal@linux-sh.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@ -27,8 +27,6 @@
#include <linux/types.h>
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
#include <linux/reboot.h>
#include <linux/notifier.h>
#include <linux/ioport.h>
#include <linux/fs.h>
#include <linux/mm.h>
@ -293,17 +291,6 @@ static long sh_wdt_ioctl(struct file *file, unsigned int cmd,
return 0;
}
static int sh_wdt_notify_sys(struct notifier_block *this,
unsigned long code, void *unused)
{
struct sh_wdt *wdt = platform_get_drvdata(sh_wdt_dev);
if (code == SYS_DOWN || code == SYS_HALT)
sh_wdt_stop(wdt);
return NOTIFY_DONE;
}
static const struct file_operations sh_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
@ -320,10 +307,6 @@ static const struct watchdog_info sh_wdt_info = {
.identity = "SH WDT",
};
static struct notifier_block sh_wdt_notifier = {
.notifier_call = sh_wdt_notify_sys,
};
static struct miscdevice sh_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
@ -365,13 +348,6 @@ static int __devinit sh_wdt_probe(struct platform_device *pdev)
goto out_err;
}
rc = register_reboot_notifier(&sh_wdt_notifier);
if (unlikely(rc)) {
dev_err(&pdev->dev,
"Can't register reboot notifier (err=%d)\n", rc);
goto out_unmap;
}
sh_wdt_miscdev.parent = wdt->dev;
rc = misc_register(&sh_wdt_miscdev);
@ -379,7 +355,7 @@ static int __devinit sh_wdt_probe(struct platform_device *pdev)
dev_err(&pdev->dev,
"Can't register miscdev on minor=%d (err=%d)\n",
sh_wdt_miscdev.minor, rc);
goto out_unreg;
goto out_unmap;
}
init_timer(&wdt->timer);
@ -394,8 +370,6 @@ static int __devinit sh_wdt_probe(struct platform_device *pdev)
return 0;
out_unreg:
unregister_reboot_notifier(&sh_wdt_notifier);
out_unmap:
devm_iounmap(&pdev->dev, wdt->base);
out_err:
@ -417,7 +391,6 @@ static int __devexit sh_wdt_remove(struct platform_device *pdev)
sh_wdt_dev = NULL;
unregister_reboot_notifier(&sh_wdt_notifier);
devm_release_mem_region(&pdev->dev, res->start, resource_size(res));
devm_iounmap(&pdev->dev, wdt->base);
devm_kfree(&pdev->dev, wdt);
@ -425,14 +398,22 @@ static int __devexit sh_wdt_remove(struct platform_device *pdev)
return 0;
}
static void sh_wdt_shutdown(struct platform_device *pdev)
{
struct sh_wdt *wdt = platform_get_drvdata(pdev);
sh_wdt_stop(wdt);
}
static struct platform_driver sh_wdt_driver = {
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
},
.probe = sh_wdt_probe,
.remove = __devexit_p(sh_wdt_remove),
.probe = sh_wdt_probe,
.remove = __devexit_p(sh_wdt_remove),
.shutdown = sh_wdt_shutdown,
};
static int __init sh_wdt_init(void)