From: Lars Poeschel <poeschel@xxxxxxxxxxx>
Add a early_enable module parameter to the omap_wdt that starts the
watchdog on module insertion. The default value is 0 which does not
start the watchdog - which also does not change the behavior if the
parameter is not given.
Signed-off-by: Lars Poeschel <poeschel@xxxxxxxxxxx>
---
Documentation/watchdog/watchdog-parameters.txt | 1 +
drivers/watchdog/omap_wdt.c | 8 ++++++++
2 files changed, 9 insertions(+)
diff --git a/Documentation/watchdog/watchdog-parameters.txt b/Documentation/watchdog/watchdog-parameters.txt
index 692791c..837a4e2 100644
--- a/Documentation/watchdog/watchdog-parameters.txt
+++ b/Documentation/watchdog/watchdog-parameters.txt
@@ -208,6 +208,7 @@ nowayout: Watchdog cannot be stopped once started
-------------------------------------------------
omap_wdt:
timer_margin: initial watchdog timeout (in seconds)
+early_enable: Watchdog is started on module insertion (default=0)
-------------------------------------------------
orion_wdt:
heartbeat: Initial watchdog heartbeat in seconds
diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
index 1e6be9e..29c5f33 100644
--- a/drivers/watchdog/omap_wdt.c
+++ b/drivers/watchdog/omap_wdt.c
@@ -53,6 +53,11 @@ static unsigned timer_margin;
module_param(timer_margin, uint, 0);
MODULE_PARM_DESC(timer_margin, "initial watchdog timeout (in seconds)");
+static bool early_enable;
+module_param(early_enable, bool, 0);
+MODULE_PARM_DESC(early_enable,
+ "Watchdog is started on module insertion (default=0)");
+
struct omap_wdt_dev {
void __iomem *base; /* physical */
struct device *dev;
@@ -269,6 +274,9 @@ static int omap_wdt_probe(struct platform_device *pdev)
pm_runtime_put_sync(wdev->dev);
+ if (early_enable)
+ omap_wdt_start(omap_wdt);
+
return 0;
}
--
2.1.4
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