watchdog: imgpdc: Allow timeout to be set in device-tree

Since the heartbeat is statically initialized to its default value,
watchdog_init_timeout() will never look in the device-tree for a
timeout-sec value.  Instead of statically initializing heartbeat,
fall back to the default timeout value if watchdog_init_timeout()
fails.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/imgpdc_wdt.c b/drivers/watchdog/imgpdc_wdt.c
index 0deaa4f..d6826a6 100644 (file)
--- a/drivers/watchdog/imgpdc_wdt.c
+++ b/drivers/watchdog/imgpdc_wdt.c
@@ -42,7 +42,7 @@
 #define PDC_WDT_MIN_TIMEOUT            1
 #define PDC_WDT_DEF_TIMEOUT            64
 
-static int heartbeat = PDC_WDT_DEF_TIMEOUT;
+static int heartbeat;
 module_param(heartbeat, int, 0);
 MODULE_PARM_DESC(heartbeat, "Watchdog heartbeats in seconds "
        "(default=" __MODULE_STRING(PDC_WDT_DEF_TIMEOUT) ")");
@@ -190,15 +190,11 @@ static int pdc_wdt_probe(struct platform_device *pdev)
        pdc_wdt->wdt_dev.info = &pdc_wdt_info;
        pdc_wdt->wdt_dev.ops = &pdc_wdt_ops;
        pdc_wdt->wdt_dev.max_timeout = 1 << PDC_WDT_CONFIG_DELAY_MASK;
+       pdc_wdt->wdt_dev.timeout = PDC_WDT_DEF_TIMEOUT;
        pdc_wdt->wdt_dev.parent = &pdev->dev;
        watchdog_set_drvdata(&pdc_wdt->wdt_dev, pdc_wdt);
 
-       ret = watchdog_init_timeout(&pdc_wdt->wdt_dev, heartbeat, &pdev->dev);
-       if (ret < 0) {
-               pdc_wdt->wdt_dev.timeout = pdc_wdt->wdt_dev.max_timeout;
-               dev_warn(&pdev->dev,
-                        "Initial timeout out of range! setting max timeout\n");
-       }
+       watchdog_init_timeout(&pdc_wdt->wdt_dev, heartbeat, &pdev->dev);
 
        pdc_wdt_stop(&pdc_wdt->wdt_dev);