linux-kernel - Re: [PATCH v5 2/2] watchdog: Add Renesas RZ/N1 Watchdog driver

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Message-ID: <YlOJVzA49rTrBDH3@google.com>
Date:   Mon, 11 Apr 2022 01:50:15 +0000
From:   Tzung-Bi Shih <tzungbi@...nel.org>
To:     Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Cc:     linux@...ck-us.net, wim@...ux-watchdog.org,
        geert+renesas@...der.be, linux-watchdog@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Phil Edworthy <phil.edworthy@...esas.com>
Subject: Re: [PATCH v5 2/2] watchdog: Add Renesas RZ/N1 Watchdog driver

On Fri, Apr 08, 2022 at 10:02:05PM +0200, Jean-Jacques Hiblot wrote:
> From: Phil Edworthy <phil.edworthy@...esas.com>
> 
> This is a driver for the standard WDT on the RZ/N1 devices. This WDT has
> very limited timeout capabilities. However, it can reset the device.
> To do so, the corresponding bits in the SysCtrl RSTEN register need to
> be enabled. This is not done by this driver.
> 
> Signed-off-by: Phil Edworthy <phil.edworthy@...esas.com>
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@...phandler.com>

With a minor comment:
Reviewed-by: Tzung-Bi Shih <tzungbi@...nel.org>

> +static int rzn1_wdt_probe(struct platform_device *pdev)
> +{
[...]
> +	wdt->wdtdev.timeout = DEFAULT_TIMEOUT;
> +	ret = watchdog_init_timeout(&wdt->wdtdev, 0, dev);

Could it drop the assignment if `ret` is unused?