修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/drivers/watchdog/tegra_wdt.c
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@@ -181,15 +181,14 @@
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 static int tegra_wdt_probe(struct platform_device *pdev)
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 {
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+	struct device *dev = &pdev->dev;
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 	struct watchdog_device *wdd;
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 	struct tegra_wdt *wdt;
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-	struct resource *res;
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 	void __iomem *regs;
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 	int ret;
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 	/* This is the timer base. */
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	regs = devm_ioremap_resource(&pdev->dev, res);
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+	regs = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(regs))
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 		return PTR_ERR(regs);
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@@ -197,7 +196,7 @@
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 	 * Allocate our watchdog driver data, which has the
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 	 * struct watchdog_device nested within it.
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 	 */
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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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@@ -212,35 +211,21 @@
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 	wdd->ops = &tegra_wdt_ops;
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 	wdd->min_timeout = MIN_WDT_TIMEOUT;
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 	wdd->max_timeout = MAX_WDT_TIMEOUT;
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-	wdd->parent = &pdev->dev;
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+	wdd->parent = dev;
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 	watchdog_set_drvdata(wdd, wdt);
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 	watchdog_set_nowayout(wdd, nowayout);
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-	ret = devm_watchdog_register_device(&pdev->dev, wdd);
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-	if (ret) {
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-		dev_err(&pdev->dev,
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-			"failed to register watchdog device\n");
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+	watchdog_stop_on_unregister(wdd);
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+	ret = devm_watchdog_register_device(dev, wdd);
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+	if (ret)
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 		return ret;
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-	}
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 	platform_set_drvdata(pdev, wdt);
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-	dev_info(&pdev->dev,
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-		 "initialized (heartbeat = %d sec, nowayout = %d)\n",
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+	dev_info(dev, "initialized (heartbeat = %d sec, nowayout = %d)\n",
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 		 heartbeat, nowayout);
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-
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-	return 0;
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-}
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-
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-static int tegra_wdt_remove(struct platform_device *pdev)
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-{
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-	struct tegra_wdt *wdt = platform_get_drvdata(pdev);
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-
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-	tegra_wdt_stop(&wdt->wdd);
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-
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-	dev_info(&pdev->dev, "removed wdt\n");
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 	return 0;
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 }
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@@ -280,7 +265,6 @@
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 static struct platform_driver tegra_wdt_driver = {
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 	.probe		= tegra_wdt_probe,
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-	.remove		= tegra_wdt_remove,
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 	.driver		= {
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 		.name	= "tegra-wdt",
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 		.pm	= &tegra_wdt_pm_ops,