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From: Sylvain Rochet <sylvain.rochet@finsecur.com>
To: Guenter Roeck <linux@roeck-us.net>,
	Boris BREZILLON <boris.brezillon@free-electrons.com>,
	linux-kernel@vger.kernel.org,
	Nicolas Ferre <nicolas.ferre@atmel.com>,
	Ludovic Desroches <ludovic.desroches@atmel.com>,
	linux-arm-kernel@lists.infradead.org,
	Alexandre Belloni <alexandre.belloni@free-electrons.com>,
	Wenyou Yang <wenyou.yang@atmel.com>,
	Wim Van Sebroeck <wim@iguana.be>
Subject: Re: [PATCH 3/6] watchdog: at91sam9: rename heartbeats into timeout where necessary
Date: Mon, 12 Oct 2015 12:07:06 +0200	[thread overview]
Message-ID: <20151012100706.GA3088@gradator.net> (raw)
In-Reply-To: <1444340074-15437-4-git-send-email-sylvain.rochet@finsecur.com>

On Thu, Oct 08, 2015 at 11:34:31PM +0200, Sylvain Rochet wrote:
> 
> @@ -344,7 +342,7 @@ static int __init at91wdt_probe(struct platform_device *pdev)
>  	wdt->wdd.parent = &pdev->dev;
>  	wdt->wdd.info = &at91_wdt_info;
>  	wdt->wdd.ops = &at91_wdt_ops;
> -	wdt->wdd.timeout = WDT_HEARTBEAT;
> +	wdt->wdd.timeout = wdt_timeout;

This wasn't a good idea, if wdt_timeout is set using a module parameter 
to a wrong value we end up using this wrong value. Setting the default 
to a valid hardwired value and checking if the proposed value is valid 
using watchdog_init_timeout is obviously the way to go. I will rework 
that in v2.

Sylvain

WARNING: multiple messages have this Message-ID (diff)
From: sylvain.rochet@finsecur.com (Sylvain Rochet)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/6] watchdog: at91sam9: rename heartbeats into timeout where necessary
Date: Mon, 12 Oct 2015 12:07:06 +0200	[thread overview]
Message-ID: <20151012100706.GA3088@gradator.net> (raw)
In-Reply-To: <1444340074-15437-4-git-send-email-sylvain.rochet@finsecur.com>

On Thu, Oct 08, 2015 at 11:34:31PM +0200, Sylvain Rochet wrote:
> 
> @@ -344,7 +342,7 @@ static int __init at91wdt_probe(struct platform_device *pdev)
>  	wdt->wdd.parent = &pdev->dev;
>  	wdt->wdd.info = &at91_wdt_info;
>  	wdt->wdd.ops = &at91_wdt_ops;
> -	wdt->wdd.timeout = WDT_HEARTBEAT;
> +	wdt->wdd.timeout = wdt_timeout;

This wasn't a good idea, if wdt_timeout is set using a module parameter 
to a wrong value we end up using this wrong value. Setting the default 
to a valid hardwired value and checking if the proposed value is valid 
using watchdog_init_timeout is obviously the way to go. I will rework 
that in v2.

Sylvain

  reply	other threads:[~2015-10-12 10:07 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-08 21:34 [PATCH 0/6] watchdog: sama5d4 and at91sam9: trivial rework Sylvain Rochet
2015-10-08 21:34 ` Sylvain Rochet
2015-10-08 21:34 ` [PATCH 1/6] watchdog: at91sam9: use devm_request_irq instead of request_irq Sylvain Rochet
2015-10-08 21:34   ` Sylvain Rochet
2015-10-08 21:34 ` [PATCH 2/6] watchdog: at91sam9: use watchdog_get_drvdata instead of container_of Sylvain Rochet
2015-10-08 21:34   ` Sylvain Rochet
2015-10-08 21:34 ` [PATCH 3/6] watchdog: at91sam9: rename heartbeats into timeout where necessary Sylvain Rochet
2015-10-08 21:34   ` Sylvain Rochet
2015-10-12 10:07   ` Sylvain Rochet [this message]
2015-10-12 10:07     ` Sylvain Rochet
2015-10-08 21:34 ` [PATCH 4/6] watchdog: at91sam9: remove nowayout useless copy Sylvain Rochet
2015-10-08 21:34   ` Sylvain Rochet
2015-10-08 21:34 ` [PATCH 5/6] watchdog: at91sam9: remove unused pdata support Sylvain Rochet
2015-10-08 21:34   ` Sylvain Rochet
2015-10-08 21:34 ` [PATCH 6/6] watchdog: sama5d4: try to set timeout from device tree first Sylvain Rochet
2015-10-08 21:34   ` Sylvain Rochet
2015-10-12  7:50   ` Alexandre Belloni
2015-10-12  7:50     ` Alexandre Belloni
2015-10-12  8:12     ` Yang, Wenyou
2015-10-12  8:12       ` Yang, Wenyou
2015-10-12 13:56       ` Sylvain Rochet
2015-10-12 13:56         ` Sylvain Rochet
2015-10-12  9:09     ` Sylvain Rochet
2015-10-12  9:09       ` Sylvain Rochet

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