diff options
Diffstat (limited to 'drivers/watchdog/wd_core.c')
| -rw-r--r-- | drivers/watchdog/wd_core.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/watchdog/wd_core.c b/drivers/watchdog/wd_core.c index 4b0ee31d5b..2e2814a8f2 100644 --- a/drivers/watchdog/wd_core.c +++ b/drivers/watchdog/wd_core.c @@ -18,6 +18,7 @@ #include <errno.h> #include <linux/ctype.h> #include <watchdog.h> +#include <restart.h> static LIST_HEAD(watchdog_list); @@ -177,6 +178,24 @@ static int seconds_to_expire_get(struct param_d *p, void *priv) return 0; } +static void __noreturn watchdog_restart_handle(struct restart_handler *this) +{ + struct watchdog *wd = watchdog_get_default(); + int ret = -ENODEV; + + if (wd) + ret = watchdog_set_timeout(wd, 1); + + BUG_ON(ret); + mdelay(2000); + __builtin_unreachable(); +} + +static struct restart_handler restart_handler = { + .restart = watchdog_restart_handle, + .name = "watchdog-restart", +}; + int watchdog_register(struct watchdog *wd) { struct param_d *p; @@ -247,6 +266,13 @@ int watchdog_register(struct watchdog *wd) goto error_unregister; } + if (!restart_handler.priority) { + restart_handler.priority = 10; /* don't override others */ + ret = restart_handler_register(&restart_handler); + if (ret) + dev_warn(&wd->dev, "failed to register restart handler\n"); + } + list_add_tail(&wd->list, &watchdog_list); pr_debug("registering watchdog %s with priority %d\n", watchdog_name(wd), |