Hi All,
Can you give comments and test?
Thanks in advance,
Wim.
commit 31088dc041e929453f307f34a90dd8cecacf2fa8
Author: Wim Van Sebroeck <[email protected]>
Date: Sat Dec 26 19:13:00 2009 +0000
[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 <[email protected]>
diff --git a/drivers/watchdog/bfin_wdt.c b/drivers/watchdog/bfin_wdt.c
index 6ce2022..5a73d73 100644
--- a/drivers/watchdog/bfin_wdt.c
+++ b/drivers/watchdog/bfin_wdt.c
@@ -20,8 +20,6 @@
#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>
@@ -308,26 +306,6 @@ 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;
@@ -394,33 +372,21 @@ 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;
}
@@ -433,21 +399,33 @@ 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 = {
diff --git a/drivers/watchdog/txx9wdt.c b/drivers/watchdog/txx9wdt.c
index 364cfee..bcfd572 100644
--- a/drivers/watchdog/txx9wdt.c
+++ b/drivers/watchdog/txx9wdt.c
@@ -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>
@@ -167,14 +166,6 @@ 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,
@@ -190,10 +181,6 @@ 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;
@@ -222,13 +209,8 @@ 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;
}
@@ -250,14 +232,19 @@ exit:
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,
On Tue, Jan 19, 2010 at 16:22, Wim Van Sebroeck wrote:
> [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.
>
> --- a/drivers/watchdog/bfin_wdt.c
> +++ b/drivers/watchdog/bfin_wdt.c
seems to work fine on my Blackfin boards:
root:/> dmesg -n 8
root:/> reboot
bfin_wdt_write:222: here i am
bfin_wdt_keepalive:88: here i am
bfin_wdt_release:196: here i am
bfin_wdt_stop:100: here i am
bfin_wdt_shutdown:418: here i am
bfin_wdt_stop:100: here i am
Restarting system.�
and i like things that shrink code:
- 1792 176 20 1988 7c4 drivers/watchdog/bfin_wdt.o
+ 1676 164 20 1860 744 drivers/watchdog/bfin_wdt.o
Signed-off-by: Mike Frysinger <[email protected]>
-mike