Merge git://www.linux-watchdog.org/linux-watchdog

Pull watchdog fixes from Wim Van Sebroeck:
 "This fixes some small errors in the new da9055 driver, eliminates a
  compiler warning and adds DT support for the twl4030_wdt driver (so
  that we can have multiple watchdogs with DT on the omap platforms)."

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: twl4030_wdt: add DT support
  watchdog: omap_wdt: eliminate unused variable and a compiler warning
  watchdog: da9055: Don't update wdt_dev->timeout in da9055_wdt_set_timeout error path
  watchdog: da9055: Fix invalid free of devm_ allocated data

Documentation/devicetree/bindings/watchdog/twl4030-wdt.txt

+Device tree bindings for twl4030-wdt driver (TWL4030 watchdog)
+
+Required properties:
+	compatible = "ti,twl4030-wdt";
+
+Example:
+
+watchdog {
+	compatible = "ti,twl4030-wdt";
+};

arch/arm/boot/dts/twl4030.dtsi

@@ -19,6 +19,10 @@
 		interrupts = <11>;
 	};
 
+	watchdog {
+		compatible = "ti,twl4030-wdt";
+	};
+
 	vdac: regulator-vdac {
 		compatible = "ti,twl4030-vdac";
 		regulator-min-microvolt = <1800000>;

drivers/watchdog/da9055_wdt.c

@@ -72,20 +72,21 @@ static int da9055_wdt_set_timeout(struct watchdog_device *wdt_dev,
 					DA9055_TWDSCALE_MASK,
 					da9055_wdt_maps[i].reg_val <<
 					DA9055_TWDSCALE_SHIFT);
-	if (ret < 0)
+	if (ret < 0) {
 		dev_err(da9055->dev,
 			"Failed to update timescale bit, %d\n", ret);
+		return ret;
+	}
 
 	wdt_dev->timeout = timeout;
 
-	return ret;
+	return 0;
 }
 
 static int da9055_wdt_ping(struct watchdog_device *wdt_dev)
 {
 	struct da9055_wdt_data *driver_data = watchdog_get_drvdata(wdt_dev);
 	struct da9055 *da9055 = driver_data->da9055;
-	int ret;
 
 	/*
 	 * We have a minimum time for watchdog window called TWDMIN. A write
@@ -94,18 +95,12 @@ static int da9055_wdt_ping(struct watchdog_device *wdt_dev)
 	mdelay(DA9055_TWDMIN);
 
 	/* Reset the watchdog timer */
-	ret = da9055_reg_update(da9055, DA9055_REG_CONTROL_E,
+	return da9055_reg_update(da9055, DA9055_REG_CONTROL_E,
 				 DA9055_WATCHDOG_MASK, 1);
-
-	return ret;
 }
 
 static void da9055_wdt_release_resources(struct kref *r)
 {
-	struct da9055_wdt_data *driver_data =
-		container_of(r, struct da9055_wdt_data, kref);
-
-	kfree(driver_data);
 }
 
 static void da9055_wdt_ref(struct watchdog_device *wdt_dev)

drivers/watchdog/omap_wdt.c

@@ -296,7 +296,6 @@ static int omap_wdt_remove(struct platform_device *pdev)
 {
 	struct watchdog_device *wdog = platform_get_drvdata(pdev);
 	struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
-	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
 	pm_runtime_disable(wdev->dev);
 	watchdog_unregister_device(wdog);

drivers/watchdog/twl4030_wdt.c

@@ -131,6 +131,12 @@ static int twl4030_wdt_resume(struct platform_device *pdev)
 #define twl4030_wdt_resume         NULL
 #endif
 
+static const struct of_device_id twl_wdt_of_match[] = {
+	{ .compatible = "ti,twl4030-wdt", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, twl_wdt_of_match);
+
 static struct platform_driver twl4030_wdt_driver = {
 	.probe		= twl4030_wdt_probe,
 	.remove		= twl4030_wdt_remove,
@@ -139,6 +145,7 @@ static struct platform_driver twl4030_wdt_driver = {
 	.driver		= {
 		.owner		= THIS_MODULE,
 		.name		= "twl4030_wdt",
+		.of_match_table	= twl_wdt_of_match,
 	},
 };