--- zzzz-none-000/linux-3.10.107/drivers/watchdog/wm831x_wdt.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/watchdog/wm831x_wdt.c	2021-02-04 17:41:59.000000000 +0000
@@ -184,7 +184,7 @@
 static int wm831x_wdt_probe(struct platform_device *pdev)
 {
 	struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
-	struct wm831x_pdata *chip_pdata;
+	struct wm831x_pdata *chip_pdata = dev_get_platdata(pdev->dev.parent);
 	struct wm831x_watchdog_pdata *pdata;
 	struct wm831x_wdt_drvdata *driver_data;
 	struct watchdog_device *wm831x_wdt;
@@ -204,7 +204,6 @@
 	driver_data = devm_kzalloc(&pdev->dev, sizeof(*driver_data),
 				   GFP_KERNEL);
 	if (!driver_data) {
-		dev_err(wm831x->dev, "Unable to alloacate watchdog device\n");
 		ret = -ENOMEM;
 		goto err;
 	}
@@ -216,6 +215,7 @@
 
 	wm831x_wdt->info = &wm831x_wdt_info;
 	wm831x_wdt->ops = &wm831x_wdt_ops;
+	wm831x_wdt->parent = &pdev->dev;
 	watchdog_set_nowayout(wm831x_wdt, nowayout);
 	watchdog_set_drvdata(wm831x_wdt, driver_data);
 
@@ -231,12 +231,10 @@
 		wm831x_wdt->timeout = wm831x_wdt_cfgs[i].time;
 
 	/* Apply any configuration */
-	if (pdev->dev.parent->platform_data) {
-		chip_pdata = pdev->dev.parent->platform_data;
+	if (chip_pdata)
 		pdata = chip_pdata->watchdog;
-	} else {
+	else
 		pdata = NULL;
-	}
 
 	if (pdata) {
 		reg &= ~(WM831X_WDOG_SECACT_MASK | WM831X_WDOG_PRIMACT_MASK |
@@ -247,9 +245,10 @@
 		reg |= pdata->software << WM831X_WDOG_RST_SRC_SHIFT;
 
 		if (pdata->update_gpio) {
-			ret = gpio_request_one(pdata->update_gpio,
-					       GPIOF_DIR_OUT | GPIOF_INIT_LOW,
-					       "Watchdog update");
+			ret = devm_gpio_request_one(&pdev->dev,
+						pdata->update_gpio,
+						GPIOF_OUT_INIT_LOW,
+						"Watchdog update");
 			if (ret < 0) {
 				dev_err(wm831x->dev,
 					"Failed to request update GPIO: %d\n",
@@ -270,7 +269,7 @@
 		} else {
 			dev_err(wm831x->dev,
 				"Failed to unlock security key: %d\n", ret);
-			goto err_gpio;
+			goto err;
 		}
 	}
 
@@ -278,29 +277,23 @@
 	if (ret != 0) {
 		dev_err(wm831x->dev, "watchdog_register_device() failed: %d\n",
 			ret);
-		goto err_gpio;
+		goto err;
 	}
 
-	dev_set_drvdata(&pdev->dev, driver_data);
+	platform_set_drvdata(pdev, driver_data);
 
 	return 0;
 
-err_gpio:
-	if (driver_data->update_gpio)
-		gpio_free(driver_data->update_gpio);
 err:
 	return ret;
 }
 
 static int wm831x_wdt_remove(struct platform_device *pdev)
 {
-	struct wm831x_wdt_drvdata *driver_data = dev_get_drvdata(&pdev->dev);
+	struct wm831x_wdt_drvdata *driver_data = platform_get_drvdata(pdev);
 
 	watchdog_unregister_device(&driver_data->wdt);
 
-	if (driver_data->update_gpio)
-		gpio_free(driver_data->update_gpio);
-
 	return 0;
 }