mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-14 11:43:10 +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
121 lines
3.1 KiB
Diff
121 lines
3.1 KiB
Diff
--- a/drivers/watchdog/bcm47xx_wdt.c
|
|
+++ b/drivers/watchdog/bcm47xx_wdt.c
|
|
@@ -31,6 +31,7 @@
|
|
|
|
#define WDT_DEFAULT_TIME 30 /* seconds */
|
|
#define WDT_SOFTTIMER_MAX 3600 /* seconds */
|
|
+#define WDT_SOFTTIMER_THRESHOLD 60 /* seconds */
|
|
|
|
static int timeout = WDT_DEFAULT_TIME;
|
|
static bool nowayout = WATCHDOG_NOWAYOUT;
|
|
@@ -50,6 +51,53 @@ static inline struct bcm47xx_wdt *bcm47x
|
|
return container_of(wdd, struct bcm47xx_wdt, wdd);
|
|
}
|
|
|
|
+static int bcm47xx_wdt_hard_keepalive(struct watchdog_device *wdd)
|
|
+{
|
|
+ struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
|
|
+
|
|
+ wdt->timer_set_ms(wdt, wdd->timeout * 1000);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int bcm47xx_wdt_hard_start(struct watchdog_device *wdd)
|
|
+{
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int bcm47xx_wdt_hard_stop(struct watchdog_device *wdd)
|
|
+{
|
|
+ struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
|
|
+
|
|
+ wdt->timer_set(wdt, 0);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int bcm47xx_wdt_hard_set_timeout(struct watchdog_device *wdd,
|
|
+ unsigned int new_time)
|
|
+{
|
|
+ struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
|
|
+ u32 max_timer = wdt->max_timer_ms;
|
|
+
|
|
+ if (new_time < 1 || new_time > max_timer / 1000) {
|
|
+ pr_warn("timeout value must be 1<=x<=%d, using %d\n",
|
|
+ max_timer / 1000, new_time);
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ wdd->timeout = new_time;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static struct watchdog_ops bcm47xx_wdt_hard_ops = {
|
|
+ .owner = THIS_MODULE,
|
|
+ .start = bcm47xx_wdt_hard_start,
|
|
+ .stop = bcm47xx_wdt_hard_stop,
|
|
+ .ping = bcm47xx_wdt_hard_keepalive,
|
|
+ .set_timeout = bcm47xx_wdt_hard_set_timeout,
|
|
+};
|
|
+
|
|
static void bcm47xx_wdt_soft_timer_tick(unsigned long data)
|
|
{
|
|
struct bcm47xx_wdt *wdt = (struct bcm47xx_wdt *)data;
|
|
@@ -134,15 +182,22 @@ static struct watchdog_ops bcm47xx_wdt_s
|
|
static int __devinit bcm47xx_wdt_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
+ bool soft;
|
|
struct bcm47xx_wdt *wdt = dev_get_platdata(&pdev->dev);
|
|
|
|
if (!wdt)
|
|
return -ENXIO;
|
|
|
|
- setup_timer(&wdt->soft_timer, bcm47xx_wdt_soft_timer_tick,
|
|
- (long unsigned int)wdt);
|
|
+ soft = wdt->max_timer_ms < WDT_SOFTTIMER_THRESHOLD * 1000;
|
|
+
|
|
+ if (soft) {
|
|
+ wdt->wdd.ops = &bcm47xx_wdt_soft_ops;
|
|
+ setup_timer(&wdt->soft_timer, bcm47xx_wdt_soft_timer_tick,
|
|
+ (long unsigned int)wdt);
|
|
+ } else {
|
|
+ wdt->wdd.ops = &bcm47xx_wdt_hard_ops;
|
|
+ }
|
|
|
|
- wdt->wdd.ops = &bcm47xx_wdt_soft_ops;
|
|
wdt->wdd.info = &bcm47xx_wdt_info;
|
|
wdt->wdd.timeout = WDT_DEFAULT_TIME;
|
|
ret = wdt->wdd.ops->set_timeout(&wdt->wdd, timeout);
|
|
@@ -160,14 +215,16 @@ static int __devinit bcm47xx_wdt_probe(s
|
|
if (ret)
|
|
goto err_notifier;
|
|
|
|
- pr_info("BCM47xx Watchdog Timer enabled (%d seconds%s)\n",
|
|
- timeout, nowayout ? ", nowayout" : "");
|
|
+ dev_info(&pdev->dev, "BCM47xx Watchdog Timer enabled (%d seconds%s%s)\n",
|
|
+ timeout, nowayout ? ", nowayout" : "",
|
|
+ soft ? ", Software Timer" : "");
|
|
return 0;
|
|
|
|
err_notifier:
|
|
unregister_reboot_notifier(&wdt->notifier);
|
|
err_timer:
|
|
- del_timer_sync(&wdt->soft_timer);
|
|
+ if (soft)
|
|
+ del_timer_sync(&wdt->soft_timer);
|
|
|
|
return ret;
|
|
}
|
|
--- a/include/linux/bcm47xx_wdt.h
|
|
+++ b/include/linux/bcm47xx_wdt.h
|
|
@@ -10,6 +10,7 @@
|
|
struct bcm47xx_wdt {
|
|
u32 (*timer_set)(struct bcm47xx_wdt *, u32);
|
|
u32 (*timer_set_ms)(struct bcm47xx_wdt *, u32);
|
|
+ u32 max_timer_ms;
|
|
|
|
void *driver_data;
|
|
|