watchdog: lpc18xx: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230303213716.2123717-17-u.kleine-koenig@pengutronix.de Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
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@ -261,14 +261,12 @@ static int lpc18xx_wdt_probe(struct platform_device *pdev)
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return devm_watchdog_register_device(dev, &lpc18xx_wdt->wdt_dev);
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}
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static int lpc18xx_wdt_remove(struct platform_device *pdev)
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static void lpc18xx_wdt_remove(struct platform_device *pdev)
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{
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struct lpc18xx_wdt_dev *lpc18xx_wdt = platform_get_drvdata(pdev);
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dev_warn(&pdev->dev, "I quit now, hardware will probably reboot!\n");
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del_timer_sync(&lpc18xx_wdt->timer);
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return 0;
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}
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static const struct of_device_id lpc18xx_wdt_match[] = {
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@ -283,7 +281,7 @@ static struct platform_driver lpc18xx_wdt_driver = {
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.of_match_table = lpc18xx_wdt_match,
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},
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.probe = lpc18xx_wdt_probe,
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.remove = lpc18xx_wdt_remove,
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.remove_new = lpc18xx_wdt_remove,
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};
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module_platform_driver(lpc18xx_wdt_driver);
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