linux-kernel - Re: [PATCH 1/2] watchdog: dw_wdt: Fix the error handling path of dw_wdt_drv

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Date:   Wed, 26 Apr 2023 06:46:50 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Steffen Trumtrar <s.trumtrar@...gutronix.de>,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Wim Van Sebroeck <wim@...ana.be>,
        linux-watchdog@...r.kernel.org
Subject: Re: [PATCH 1/2] watchdog: dw_wdt: Fix the error handling path of
 dw_wdt_drv_probe()

On Wed, Apr 26, 2023 at 08:52:48AM +0200, Christophe JAILLET wrote:
> The commit in Fixes has only updated the remove function and missed the
> error handling path of the probe.
> 
> Add the missing reset_control_assert() call.
> 
> Fixes: 65a3b6935d92 ("watchdog: dw_wdt: get reset lines from dt")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  drivers/watchdog/dw_wdt.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/watchdog/dw_wdt.c b/drivers/watchdog/dw_wdt.c
> index 6f88bd81f8a1..a1354a59eb37 100644
> --- a/drivers/watchdog/dw_wdt.c
> +++ b/drivers/watchdog/dw_wdt.c
> @@ -635,7 +635,7 @@ static int dw_wdt_drv_probe(struct platform_device *pdev)
>  
>  	ret = dw_wdt_init_timeouts(dw_wdt, dev);
>  	if (ret)
> -		goto out_disable_clk;
> +		goto out_assert_rst;
>  
>  	wdd = &dw_wdt->wdd;
>  	wdd->ops = &dw_wdt_ops;
> @@ -667,12 +667,15 @@ static int dw_wdt_drv_probe(struct platform_device *pdev)
>  
>  	ret = watchdog_register_device(wdd);
>  	if (ret)
> -		goto out_disable_pclk;
> +		goto out_assert_rst;
>  
>  	dw_wdt_dbgfs_init(dw_wdt);
>  
>  	return 0;
>  
> +out_assert_rst:
> +	reset_control_assert(dw_wdt->rst);
> +
>  out_disable_pclk:
>  	clk_disable_unprepare(dw_wdt->pclk);
>  
> -- 
> 2.34.1
>