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hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/drivers/watchdog/max77620_wdt.c
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@@ -1,13 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Maxim MAX77620 Watchdog Driver
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  *
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  * Copyright (C) 2016 NVIDIA CORPORATION. All rights reserved.
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  *
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  * Author: Laxman Dewangan <ldewangan@nvidia.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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9
 
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 #include <linux/err.h>
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@@ -112,17 +109,18 @@
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 static int max77620_wdt_probe(struct platform_device *pdev)
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 {
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+	struct device *dev = &pdev->dev;
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 	struct max77620_wdt *wdt;
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 	struct watchdog_device *wdt_dev;
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 	unsigned int regval;
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 	int ret;
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-	wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
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+	wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
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 	if (!wdt)
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 		return -ENOMEM;
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-	wdt->dev = &pdev->dev;
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-	wdt->rmap = dev_get_regmap(pdev->dev.parent, NULL);
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+	wdt->dev = dev;
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+	wdt->rmap = dev_get_regmap(dev->parent, NULL);
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 	if (!wdt->rmap) {
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 		dev_err(wdt->dev, "Failed to get parent regmap\n");
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 		return -ENODEV;
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@@ -183,23 +181,8 @@
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 	watchdog_set_nowayout(wdt_dev, nowayout);
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 	watchdog_set_drvdata(wdt_dev, wdt);
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-	ret = watchdog_register_device(wdt_dev);
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-	if (ret < 0) {
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-		dev_err(&pdev->dev, "watchdog registration failed: %d\n", ret);
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-		return ret;
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-	}
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-
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-	return 0;
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-}
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-
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-static int max77620_wdt_remove(struct platform_device *pdev)
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-{
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-	struct max77620_wdt *wdt = platform_get_drvdata(pdev);
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-
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-	max77620_wdt_stop(&wdt->wdt_dev);
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-	watchdog_unregister_device(&wdt->wdt_dev);
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-
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-	return 0;
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+	watchdog_stop_on_unregister(wdt_dev);
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+	return devm_watchdog_register_device(dev, wdt_dev);
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 }
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 static const struct platform_device_id max77620_wdt_devtype[] = {
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@@ -213,7 +196,6 @@
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 		.name	= "max77620-watchdog",
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 	},
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 	.probe	= max77620_wdt_probe,
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-	.remove	= max77620_wdt_remove,
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 	.id_table = max77620_wdt_devtype,
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 };
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