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watchdog: bcm63xx_wdt: improve platform part.

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* fix devinit and devexit sections
* fix platform removal code so that the iounmap happens after the removal of the timer.
* changes the reboot_notifier by a platform shutdown method.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Wim Van Sebroeck 2010-10-23 20:59:42 +00:00
parent c54fb81174
commit e6c3b699b2
1 changed files with 12 additions and 30 deletions
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42
drivers/watchdog/bcm63xx_wdt.c
View file

@ -18,7 +18,6 @@
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/reboot.h>
#include <linux/types.h>
#include <linux/uaccess.h>
#include <linux/watchdog.h>
@ -220,14 +219,6 @@ static long bcm63xx_wdt_ioctl(struct file *file, unsigned int cmd,
}
}
static int bcm63xx_wdt_notify_sys(struct notifier_block *this,
unsigned long code, void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
bcm63xx_wdt_pause();
return NOTIFY_DONE;
}
static const struct file_operations bcm63xx_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
@ -243,12 +234,8 @@ static struct miscdevice bcm63xx_wdt_miscdev = {
.fops = &bcm63xx_wdt_fops,
};
static struct notifier_block bcm63xx_wdt_notifier = {
.notifier_call = bcm63xx_wdt_notify_sys,
};
static int bcm63xx_wdt_probe(struct platform_device *pdev)
static int __devinit bcm63xx_wdt_probe(struct platform_device *pdev)
{
int ret;
struct resource *r;
@ -280,16 +267,10 @@ static int bcm63xx_wdt_probe(struct platform_device *pdev)
wdt_time);
}
ret = register_reboot_notifier(&bcm63xx_wdt_notifier);
if (ret) {
dev_err(&pdev->dev, "failed to register reboot_notifier\n");
goto unregister_timer;
}
ret = misc_register(&bcm63xx_wdt_miscdev);
if (ret < 0) {
dev_err(&pdev->dev, "failed to register watchdog device\n");
goto unregister_reboot_notifier;
goto unregister_timer;
}
dev_info(&pdev->dev, " started, timer margin: %d sec\n",
@ -297,8 +278,6 @@ static int bcm63xx_wdt_probe(struct platform_device *pdev)
return 0;
unregister_reboot_notifier:
unregister_reboot_notifier(&bcm63xx_wdt_notifier);
unregister_timer:
bcm63xx_timer_unregister(TIMER_WDT_ID);
unmap:
@ -306,25 +285,28 @@ static int bcm63xx_wdt_probe(struct platform_device *pdev)
return ret;
}
static int bcm63xx_wdt_remove(struct platform_device *pdev)
static int __devexit bcm63xx_wdt_remove(struct platform_device *pdev)
{
if (!nowayout)
bcm63xx_wdt_pause();
misc_deregister(&bcm63xx_wdt_miscdev);
iounmap(bcm63xx_wdt_device.regs);
unregister_reboot_notifier(&bcm63xx_wdt_notifier);
bcm63xx_timer_unregister(TIMER_WDT_ID);
iounmap(bcm63xx_wdt_device.regs);
return 0;
}
static void bcm63xx_wdt_shutdown(struct platform_device *pdev)
{
bcm63xx_wdt_pause();
}
static struct platform_driver bcm63xx_wdt = {
.probe = bcm63xx_wdt_probe,
.remove = bcm63xx_wdt_remove,
.remove = __devexit_p(bcm63xx_wdt_remove),
.shutdown = bcm63xx_wdt_shutdown,
.driver = {
.owner = THIS_MODULE,
.name = "bcm63xx-wdt",
}
};