timeout_cur will be used for watchdog poller.
Provided values should be good enough for most users
and still can be changed for separate projects and
fit to needed requirements.
Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
---
drivers/watchdog/wd_core.c | 18 ++++++++++++++++++
include/watchdog.h | 1 +
2 files changed, 19 insertions(+)
diff --git a/drivers/watchdog/wd_core.c b/drivers/watchdog/wd_core.c
index 31a88a377..69663b39c 100644
--- a/drivers/watchdog/wd_core.c
+++ b/drivers/watchdog/wd_core.c
@@ -31,6 +31,16 @@ static const char *watchdog_name(struct watchdog *wd)
return "unknown";
}
+static int watchdog_set_cur(struct param_d *param, void *priv)
+{
+ struct watchdog *wd = priv;
+
+ if (wd->timeout_cur > wd->timeout_max)
+ return -EINVAL;
+
+ return 0;
+}
+
static int watchdog_register_dev(struct watchdog *wd, const char *name, int id)
{
wd->dev.parent = wd->hwdev;
@@ -63,11 +73,19 @@ int watchdog_register(struct watchdog *wd)
if (!wd->timeout_max)
wd->timeout_max = 60 * 60 * 24;
+ if (!wd->timeout_cur || wd->timeout_cur > wd->timeout_max)
+ wd->timeout_cur = wd->timeout_max;
+
p = dev_add_param_uint32_ro(&wd->dev, "timeout_max",
&wd->timeout_max, "%u");
if (IS_ERR(p))
return PTR_ERR(p);
+ p = dev_add_param_uint32(&wd->dev, "timeout_cur", watchdog_set_cur, NULL,
+ &wd->timeout_cur, "%u", wd);
+ if (IS_ERR(p))
+ return PTR_ERR(p);
+
list_add_tail(&wd->list, &watchdog_list);
pr_debug("registering watchdog %s with priority %d\n", watchdog_name(wd),
diff --git a/include/watchdog.h b/include/watchdog.h
index a2459d255..2f1874c19 100644
--- a/include/watchdog.h
+++ b/include/watchdog.h
@@ -20,6 +20,7 @@ struct watchdog {
struct device_d dev;
unsigned int priority;
unsigned int timeout_max;
+ unsigned int timeout_cur;
struct list_head list;
};
--
2.16.1
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