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hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/drivers/watchdog/menf21bmc_wdt.c
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@@ -1,12 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  MEN 14F021P00 Board Management Controller (BMC) Watchdog Driver.
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  *
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  *  Copyright (C) 2014 MEN Mikro Elektronik Nuernberg GmbH
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- *
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- *  This program is free software; you can redistribute  it and/or modify it
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- *  under  the terms of  the GNU General  Public License as published by the
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- *  Free Software Foundation;  either version 2 of the  License, or (at your
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- *  option) any later version.
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  */
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 #include <linux/kernel.h>
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@@ -117,12 +113,12 @@
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113
 
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 static int menf21bmc_wdt_probe(struct platform_device *pdev)
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 {
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+	struct device *dev = &pdev->dev;
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 	int ret, bmc_timeout;
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 	struct menf21bmc_wdt *drv_data;
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-	struct i2c_client *i2c_client = to_i2c_client(pdev->dev.parent);
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+	struct i2c_client *i2c_client = to_i2c_client(dev->parent);
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-	drv_data = devm_kzalloc(&pdev->dev,
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-				sizeof(struct menf21bmc_wdt), GFP_KERNEL);
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+	drv_data = devm_kzalloc(dev, sizeof(struct menf21bmc_wdt), GFP_KERNEL);
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 	if (!drv_data)
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 		return -ENOMEM;
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@@ -130,7 +126,7 @@
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 	drv_data->wdt.info = &menf21bmc_wdt_info;
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 	drv_data->wdt.min_timeout = BMC_WD_TIMEOUT_MIN;
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 	drv_data->wdt.max_timeout = BMC_WD_TIMEOUT_MAX;
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-	drv_data->wdt.parent = &pdev->dev;
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+	drv_data->wdt.parent = dev;
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 	drv_data->i2c_client = i2c_client;
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 	/*
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@@ -140,40 +136,26 @@
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 	bmc_timeout = i2c_smbus_read_word_data(drv_data->i2c_client,
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 					       BMC_CMD_WD_TIME);
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 	if (bmc_timeout < 0) {
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-		dev_err(&pdev->dev, "failed to get current WDT timeout\n");
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+		dev_err(dev, "failed to get current WDT timeout\n");
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 		return bmc_timeout;
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 	}
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-	watchdog_init_timeout(&drv_data->wdt, bmc_timeout / 10, &pdev->dev);
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+	watchdog_init_timeout(&drv_data->wdt, bmc_timeout / 10, dev);
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 	watchdog_set_nowayout(&drv_data->wdt, nowayout);
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 	watchdog_set_drvdata(&drv_data->wdt, drv_data);
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 	platform_set_drvdata(pdev, drv_data);
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 	ret = menf21bmc_wdt_set_bootstatus(drv_data);
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 	if (ret < 0) {
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-		dev_err(&pdev->dev, "failed to set Watchdog bootstatus\n");
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+		dev_err(dev, "failed to set Watchdog bootstatus\n");
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 		return ret;
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 	}
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-	ret = watchdog_register_device(&drv_data->wdt);
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-	if (ret) {
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-		dev_err(&pdev->dev, "failed to register Watchdog device\n");
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+	ret = devm_watchdog_register_device(dev, &drv_data->wdt);
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+	if (ret)
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 		return ret;
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-	}
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-	dev_info(&pdev->dev, "MEN 14F021P00 BMC Watchdog device enabled\n");
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-
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-	return 0;
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-}
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-
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-static int menf21bmc_wdt_remove(struct platform_device *pdev)
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-{
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-	struct menf21bmc_wdt *drv_data = platform_get_drvdata(pdev);
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-
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-	dev_warn(&pdev->dev,
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-		 "Unregister MEN 14F021P00 BMC Watchdog device, board may reset\n");
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-
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-	watchdog_unregister_device(&drv_data->wdt);
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+	dev_info(dev, "MEN 14F021P00 BMC Watchdog device enabled\n");
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 	return 0;
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 }
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@@ -191,7 +173,6 @@
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 		.name	= DEVNAME,
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 	},
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 	.probe		= menf21bmc_wdt_probe,
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-	.remove		= menf21bmc_wdt_remove,
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 	.shutdown	= menf21bmc_wdt_shutdown,
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 };
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