mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-27 23:29:22 +02:00
c57e2a3047
In the old configuration the SoC issued a reboot if the watchdog was killed also if it was kill with TERM and not KILL. This will fix #11724. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34324 3c298f89-4303-0410-b956-a3cf2f4a3e73
260 lines
6.2 KiB
Diff
260 lines
6.2 KiB
Diff
--- a/drivers/watchdog/Kconfig
|
|
+++ b/drivers/watchdog/Kconfig
|
|
@@ -959,6 +959,7 @@ config ATH79_WDT
|
|
config BCM47XX_WDT
|
|
tristate "Broadcom BCM47xx Watchdog Timer"
|
|
depends on BCM47XX
|
|
+ select WATCHDOG_CORE
|
|
help
|
|
Hardware driver for the Broadcom BCM47xx Watchdog Timer.
|
|
|
|
--- a/drivers/watchdog/bcm47xx_wdt.c
|
|
+++ b/drivers/watchdog/bcm47xx_wdt.c
|
|
@@ -14,15 +14,12 @@
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/errno.h>
|
|
-#include <linux/fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
-#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>
|
|
#include <linux/timer.h>
|
|
#include <linux/jiffies.h>
|
|
@@ -41,15 +38,11 @@ module_param(wdt_time, int, 0);
|
|
MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="
|
|
__MODULE_STRING(WDT_DEFAULT_TIME) ")");
|
|
|
|
-#ifdef CONFIG_WATCHDOG_NOWAYOUT
|
|
module_param(nowayout, bool, 0);
|
|
MODULE_PARM_DESC(nowayout,
|
|
"Watchdog cannot be stopped once started (default="
|
|
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
|
|
-#endif
|
|
|
|
-static unsigned long bcm47xx_wdt_busy;
|
|
-static char expect_release;
|
|
static struct timer_list wdt_timer;
|
|
static atomic_t ticks;
|
|
|
|
@@ -97,29 +90,31 @@ static void bcm47xx_timer_tick(unsigned
|
|
}
|
|
}
|
|
|
|
-static inline void bcm47xx_wdt_pet(void)
|
|
+static int bcm47xx_wdt_keepalive(struct watchdog_device *wdd)
|
|
{
|
|
atomic_set(&ticks, wdt_time);
|
|
+
|
|
+ return 0;
|
|
}
|
|
|
|
-static void bcm47xx_wdt_start(void)
|
|
+static int bcm47xx_wdt_start(struct watchdog_device *wdd)
|
|
{
|
|
bcm47xx_wdt_pet();
|
|
bcm47xx_timer_tick(0);
|
|
+
|
|
+ return 0;
|
|
}
|
|
|
|
-static void bcm47xx_wdt_pause(void)
|
|
+static int bcm47xx_wdt_stop(struct watchdog_device *wdd)
|
|
{
|
|
del_timer_sync(&wdt_timer);
|
|
bcm47xx_wdt_hw_stop();
|
|
-}
|
|
|
|
-static void bcm47xx_wdt_stop(void)
|
|
-{
|
|
- bcm47xx_wdt_pause();
|
|
+ return 0;
|
|
}
|
|
|
|
-static int bcm47xx_wdt_settimeout(int new_time)
|
|
+static int bcm47xx_wdt_set_timeout(struct watchdog_device *wdd,
|
|
+ unsigned int new_time)
|
|
{
|
|
if ((new_time <= 0) || (new_time > WDT_MAX_TIME))
|
|
return -EINVAL;
|
|
@@ -128,51 +123,6 @@ static int bcm47xx_wdt_settimeout(int ne
|
|
return 0;
|
|
}
|
|
|
|
-static int bcm47xx_wdt_open(struct inode *inode, struct file *file)
|
|
-{
|
|
- if (test_and_set_bit(0, &bcm47xx_wdt_busy))
|
|
- return -EBUSY;
|
|
-
|
|
- bcm47xx_wdt_start();
|
|
- return nonseekable_open(inode, file);
|
|
-}
|
|
-
|
|
-static int bcm47xx_wdt_release(struct inode *inode, struct file *file)
|
|
-{
|
|
- if (expect_release == 42) {
|
|
- bcm47xx_wdt_stop();
|
|
- } else {
|
|
- pr_crit("Unexpected close, not stopping watchdog!\n");
|
|
- bcm47xx_wdt_start();
|
|
- }
|
|
-
|
|
- clear_bit(0, &bcm47xx_wdt_busy);
|
|
- expect_release = 0;
|
|
- return 0;
|
|
-}
|
|
-
|
|
-static ssize_t bcm47xx_wdt_write(struct file *file, const char __user *data,
|
|
- size_t len, loff_t *ppos)
|
|
-{
|
|
- if (len) {
|
|
- if (!nowayout) {
|
|
- size_t i;
|
|
-
|
|
- expect_release = 0;
|
|
-
|
|
- for (i = 0; i != len; i++) {
|
|
- char c;
|
|
- if (get_user(c, data + i))
|
|
- return -EFAULT;
|
|
- if (c == 'V')
|
|
- expect_release = 42;
|
|
- }
|
|
- }
|
|
- bcm47xx_wdt_pet();
|
|
- }
|
|
- return len;
|
|
-}
|
|
-
|
|
static const struct watchdog_info bcm47xx_wdt_info = {
|
|
.identity = DRV_NAME,
|
|
.options = WDIOF_SETTIMEOUT |
|
|
@@ -180,80 +130,25 @@ static const struct watchdog_info bcm47x
|
|
WDIOF_MAGICCLOSE,
|
|
};
|
|
|
|
-static long bcm47xx_wdt_ioctl(struct file *file,
|
|
- unsigned int cmd, unsigned long arg)
|
|
-{
|
|
- void __user *argp = (void __user *)arg;
|
|
- int __user *p = argp;
|
|
- int new_value, retval = -EINVAL;
|
|
-
|
|
- switch (cmd) {
|
|
- case WDIOC_GETSUPPORT:
|
|
- return copy_to_user(argp, &bcm47xx_wdt_info,
|
|
- sizeof(bcm47xx_wdt_info)) ? -EFAULT : 0;
|
|
-
|
|
- case WDIOC_GETSTATUS:
|
|
- case WDIOC_GETBOOTSTATUS:
|
|
- return put_user(0, p);
|
|
-
|
|
- case WDIOC_SETOPTIONS:
|
|
- if (get_user(new_value, p))
|
|
- return -EFAULT;
|
|
-
|
|
- if (new_value & WDIOS_DISABLECARD) {
|
|
- bcm47xx_wdt_stop();
|
|
- retval = 0;
|
|
- }
|
|
-
|
|
- if (new_value & WDIOS_ENABLECARD) {
|
|
- bcm47xx_wdt_start();
|
|
- retval = 0;
|
|
- }
|
|
-
|
|
- return retval;
|
|
-
|
|
- case WDIOC_KEEPALIVE:
|
|
- bcm47xx_wdt_pet();
|
|
- return 0;
|
|
-
|
|
- case WDIOC_SETTIMEOUT:
|
|
- if (get_user(new_value, p))
|
|
- return -EFAULT;
|
|
-
|
|
- if (bcm47xx_wdt_settimeout(new_value))
|
|
- return -EINVAL;
|
|
-
|
|
- bcm47xx_wdt_pet();
|
|
-
|
|
- case WDIOC_GETTIMEOUT:
|
|
- return put_user(wdt_time, p);
|
|
-
|
|
- default:
|
|
- return -ENOTTY;
|
|
- }
|
|
-}
|
|
-
|
|
static int bcm47xx_wdt_notify_sys(struct notifier_block *this,
|
|
- unsigned long code, void *unused)
|
|
+ unsigned long code, void *unused)
|
|
{
|
|
if (code == SYS_DOWN || code == SYS_HALT)
|
|
bcm47xx_wdt_stop();
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
-static const struct file_operations bcm47xx_wdt_fops = {
|
|
+static struct watchdog_ops bcm47xx_wdt_ops = {
|
|
.owner = THIS_MODULE,
|
|
- .llseek = no_llseek,
|
|
- .unlocked_ioctl = bcm47xx_wdt_ioctl,
|
|
- .open = bcm47xx_wdt_open,
|
|
- .release = bcm47xx_wdt_release,
|
|
- .write = bcm47xx_wdt_write,
|
|
+ .start = bcm47xx_wdt_start,
|
|
+ .stop = bcm47xx_wdt_stop,
|
|
+ .ping = bcm47xx_wdt_keepalive,
|
|
+ .set_timeout = bcm47xx_wdt_set_timeout,
|
|
};
|
|
|
|
-static struct miscdevice bcm47xx_wdt_miscdev = {
|
|
- .minor = WATCHDOG_MINOR,
|
|
- .name = "watchdog",
|
|
- .fops = &bcm47xx_wdt_fops,
|
|
+static struct watchdog_device bcm47xx_wdt_wdd = {
|
|
+ .info = &bcm47xx_wdt_info,
|
|
+ .ops = &bcm47xx_wdt_ops,
|
|
};
|
|
|
|
static struct notifier_block bcm47xx_wdt_notifier = {
|
|
@@ -274,12 +169,13 @@ static int __init bcm47xx_wdt_init(void)
|
|
pr_info("wdt_time value must be 0 < wdt_time < %d, using %d\n",
|
|
(WDT_MAX_TIME + 1), wdt_time);
|
|
}
|
|
+ watchdog_set_nowayout(&bcm47xx_wdt_wdd, nowayout);
|
|
|
|
ret = register_reboot_notifier(&bcm47xx_wdt_notifier);
|
|
if (ret)
|
|
return ret;
|
|
|
|
- ret = misc_register(&bcm47xx_wdt_miscdev);
|
|
+ ret = watchdog_register_device(&bcm47xx_wdt_wdd);
|
|
if (ret) {
|
|
unregister_reboot_notifier(&bcm47xx_wdt_notifier);
|
|
return ret;
|
|
@@ -292,10 +188,8 @@ static int __init bcm47xx_wdt_init(void)
|
|
|
|
static void __exit bcm47xx_wdt_exit(void)
|
|
{
|
|
- if (!nowayout)
|
|
- bcm47xx_wdt_stop();
|
|
-
|
|
- misc_deregister(&bcm47xx_wdt_miscdev);
|
|
+ watchdog_stop(&bcm47xx_wdt_wdd);
|
|
+ watchdog_unregister_device(&bcm47xx_wdt_wdd);
|
|
|
|
unregister_reboot_notifier(&bcm47xx_wdt_notifier);
|
|
}
|
|
@@ -306,4 +200,3 @@ module_exit(bcm47xx_wdt_exit);
|
|
MODULE_AUTHOR("Aleksandar Radovanovic");
|
|
MODULE_DESCRIPTION("Watchdog driver for Broadcom BCM47xx");
|
|
MODULE_LICENSE("GPL");
|
|
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
|