mirror of https://gitee.com/openkylin/linux.git
[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: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Wim Van Sebroeck
parent
42747d712d
commit
168b5251ad
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@ -19,8 +19,6 @@
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#include <linux/miscdevice.h>
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#include <linux/watchdog.h>
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#include <linux/fs.h>
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#include <linux/notifier.h>
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#include <linux/reboot.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/uaccess.h>
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@ -309,26 +307,6 @@ static long bfin_wdt_ioctl(struct file *file,
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}
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}
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/**
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* bfin_wdt_notify_sys - Notifier Handler
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* @this: notifier block
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* @code: notifier event
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* @unused: unused
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*
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* Handles specific events, such as turning off the watchdog during a
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* shutdown event.
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*/
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static int bfin_wdt_notify_sys(struct notifier_block *this,
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unsigned long code, void *unused)
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{
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stampit();
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if (code == SYS_DOWN || code == SYS_HALT)
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bfin_wdt_stop();
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return NOTIFY_DONE;
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}
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#ifdef CONFIG_PM
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static int state_before_suspend;
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@ -395,33 +373,21 @@ static const struct watchdog_info bfin_wdt_info = {
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WDIOF_MAGICCLOSE,
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};
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static struct notifier_block bfin_wdt_notifier = {
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.notifier_call = bfin_wdt_notify_sys,
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};
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/**
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* bfin_wdt_probe - Initialize module
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*
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* Registers the misc device and notifier handler. Actual device
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* Registers the misc device. Actual device
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* initialization is handled by bfin_wdt_open().
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*/
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static int __devinit bfin_wdt_probe(struct platform_device *pdev)
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{
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int ret;
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ret = register_reboot_notifier(&bfin_wdt_notifier);
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if (ret) {
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pr_devinit(KERN_ERR PFX
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"cannot register reboot notifier (err=%d)\n", ret);
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return ret;
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}
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ret = misc_register(&bfin_wdt_miscdev);
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if (ret) {
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pr_devinit(KERN_ERR PFX
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"cannot register miscdev on minor=%d (err=%d)\n",
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WATCHDOG_MINOR, ret);
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unregister_reboot_notifier(&bfin_wdt_notifier);
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return ret;
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}
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@ -434,21 +400,33 @@ static int __devinit bfin_wdt_probe(struct platform_device *pdev)
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/**
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* bfin_wdt_remove - Initialize module
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*
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* Unregisters the misc device and notifier handler. Actual device
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* Unregisters the misc device. Actual device
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* deinitialization is handled by bfin_wdt_close().
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*/
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static int __devexit bfin_wdt_remove(struct platform_device *pdev)
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{
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misc_deregister(&bfin_wdt_miscdev);
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unregister_reboot_notifier(&bfin_wdt_notifier);
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return 0;
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}
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/**
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* bfin_wdt_shutdown - Soft Shutdown Handler
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*
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* Handles the soft shutdown event.
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*/
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static void bfin_wdt_shutdown(struct platform_device *pdev)
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{
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stampit();
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bfin_wdt_stop();
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}
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static struct platform_device *bfin_wdt_device;
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static struct platform_driver bfin_wdt_driver = {
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.probe = bfin_wdt_probe,
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.remove = __devexit_p(bfin_wdt_remove),
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.shutdown = bfin_wdt_shutdown,
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.suspend = bfin_wdt_suspend,
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.resume = bfin_wdt_resume,
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.driver = {
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@ -13,7 +13,6 @@
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#include <linux/miscdevice.h>
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#include <linux/watchdog.h>
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#include <linux/fs.h>
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#include <linux/reboot.h>
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#include <linux/init.h>
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#include <linux/uaccess.h>
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#include <linux/platform_device.h>
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@ -166,14 +165,6 @@ static long txx9wdt_ioctl(struct file *file, unsigned int cmd,
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}
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}
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static int txx9wdt_notify_sys(struct notifier_block *this, unsigned long code,
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void *unused)
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{
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if (code == SYS_DOWN || code == SYS_HALT)
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txx9wdt_stop();
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return NOTIFY_DONE;
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}
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static const struct file_operations txx9wdt_fops = {
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.owner = THIS_MODULE,
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.llseek = no_llseek,
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@ -189,10 +180,6 @@ static struct miscdevice txx9wdt_miscdev = {
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.fops = &txx9wdt_fops,
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};
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static struct notifier_block txx9wdt_notifier = {
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.notifier_call = txx9wdt_notify_sys,
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};
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static int __init txx9wdt_probe(struct platform_device *dev)
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{
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struct resource *res;
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@ -221,13 +208,8 @@ static int __init txx9wdt_probe(struct platform_device *dev)
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if (!txx9wdt_reg)
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goto exit_busy;
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ret = register_reboot_notifier(&txx9wdt_notifier);
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if (ret)
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goto exit;
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ret = misc_register(&txx9wdt_miscdev);
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if (ret) {
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unregister_reboot_notifier(&txx9wdt_notifier);
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goto exit;
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}
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@ -249,14 +231,19 @@ static int __init txx9wdt_probe(struct platform_device *dev)
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static int __exit txx9wdt_remove(struct platform_device *dev)
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{
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misc_deregister(&txx9wdt_miscdev);
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unregister_reboot_notifier(&txx9wdt_notifier);
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clk_disable(txx9_imclk);
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clk_put(txx9_imclk);
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return 0;
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}
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static void txx9wdt_shutdown(struct platform_device *dev)
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{
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txx9wdt_stop();
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}
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static struct platform_driver txx9wdt_driver = {
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.remove = __exit_p(txx9wdt_remove),
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.shutdown = txx9wdt_shutdown,
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.driver = {
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.name = "txx9wdt",
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.owner = THIS_MODULE,
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