linux-kernel - Re: [PATCH 3/4] watchdog: imgpdc: Set timeout before starting watchdog

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Date:	Tue, 31 Mar 2015 20:50:28 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Andrew Bresticker <abrestic@...omium.org>,
	Wim Van Sebroeck <wim@...ana.be>
CC:	linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
	Naidu Tellapati <naidu.tellapati@...tec.com>,
	Ezequiel Garcia <ezequiel.garcia@...tec.com>
Subject: Re: [PATCH 3/4] watchdog: imgpdc: Set timeout before starting watchdog

On 03/31/2015 11:49 AM, Andrew Bresticker wrote:
> From: Naidu Tellapati <naidu.tellapati@...tec.com>
>
> Set up the watchdog for the specified timeout before attempting to start it.
>
> Signed-off-by: Naidu Tellapati <naidu.tellapati@...tec.com>
> Signed-off-by: Andrew Bresticker <abrestic@...omium.org>
> Cc: Ezequiel Garcia <ezequiel.garcia@...tec.com>
> ---
>   drivers/watchdog/imgpdc_wdt.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/watchdog/imgpdc_wdt.c b/drivers/watchdog/imgpdc_wdt.c
> index f3f65ac..aef3596 100644
> --- a/drivers/watchdog/imgpdc_wdt.c
> +++ b/drivers/watchdog/imgpdc_wdt.c
> @@ -106,6 +106,8 @@ static int pdc_wdt_start(struct watchdog_device *wdt_dev)
>   	unsigned int val;
>   	struct pdc_wdt_dev *wdt = watchdog_get_drvdata(wdt_dev);
>
> +	pdc_wdt_set_timeout(&wdt->wdt_dev, wdt->wdt_dev.timeout);
> +
>   	val = readl(wdt->base + PDC_WDT_CONFIG);
>   	val |= PDC_WDT_CONFIG_ENABLE;
>   	writel(val, wdt->base + PDC_WDT_CONFIG);
>
It might be better to provide a helper function that doesn't set wdt->wdt_dev.timeout
again, or to just set the timeout with the write to PDC_WDT_CONFIG when starting
the watchdog.

Guenter

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