linux-kernel - Re: [PATCH 1/3] watchdog: bcm47xx: Simplify using devm_watchdog_register

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Message-ID: <ea4bcac7-e78d-d051-21fe-1014d39cd52a@roeck-us.net>
Date:   Mon, 6 Mar 2023 12:17:39 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>
Cc:     linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de
Subject: Re: [PATCH 1/3] watchdog: bcm47xx: Simplify using
 devm_watchdog_register_device()

On 3/6/23 09:08, Uwe Kleine-König wrote:
> This allows to drop the .remove() function as it only exists to
> unregister the watchdog device which is now done in a callback
> registered by devm_watchdog_register_device().
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> ---
>   drivers/watchdog/bcm47xx_wdt.c | 12 +-----------
>   1 file changed, 1 insertion(+), 11 deletions(-)
> 
> diff --git a/drivers/watchdog/bcm47xx_wdt.c b/drivers/watchdog/bcm47xx_wdt.c
> index 05425c1dfd4c..8698ef94dddf 100644
> --- a/drivers/watchdog/bcm47xx_wdt.c
> +++ b/drivers/watchdog/bcm47xx_wdt.c
> @@ -202,7 +202,7 @@ static int bcm47xx_wdt_probe(struct platform_device *pdev)
>   	watchdog_set_restart_priority(&wdt->wdd, 64);
>   	watchdog_stop_on_reboot(&wdt->wdd);
>   
> -	ret = watchdog_register_device(&wdt->wdd);
> +	ret = devm_watchdog_register_device(&wdt->wdd);

Oops, all those need &pdev->dev as first argument. Please resend with that fixed.

Thanks,
Guenter

>   	if (ret)
>   		goto err_timer;
>   
> @@ -218,21 +218,11 @@ static int bcm47xx_wdt_probe(struct platform_device *pdev)
>   	return ret;
>   }
>   
> -static int bcm47xx_wdt_remove(struct platform_device *pdev)
> -{
> -	struct bcm47xx_wdt *wdt = dev_get_platdata(&pdev->dev);
> -
> -	watchdog_unregister_device(&wdt->wdd);
> -
> -	return 0;
> -}
> -
>   static struct platform_driver bcm47xx_wdt_driver = {
>   	.driver		= {
>   		.name	= "bcm47xx-wdt",
>   	},
>   	.probe		= bcm47xx_wdt_probe,
> -	.remove		= bcm47xx_wdt_remove,
>   };
>   
>   module_platform_driver(bcm47xx_wdt_driver);