linux-kernel - Re: [PATCH 1/4] watchdog: hpwdt: Initialize pretimeout from module parameter.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1635a9b2-6b2a-fd57-13ea-d99494dbfdec@roeck-us.net>
Date:   Sat, 4 Aug 2018 18:08:17 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Jerry Hoemann <jerry.hoemann@....com>, wim@...ux-watchdog.org
Cc:     linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] watchdog: hpwdt: Initialize pretimeout from module
 parameter.

On 08/02/2018 02:15 PM, Jerry Hoemann wrote:
> When the pretimeout is specified as a module parameter, the
> value should be reflected in hpwdt_dev.pretimeout.  The default
> (on) case is correct.  But, when disabling pretimeout, the value
> should be set to zero in hpwdt_dev.
> 
> Signed-off-by: Jerry Hoemann <jerry.hoemann@....com>
> ---
>   drivers/watchdog/hpwdt.c | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
> index 9dc62a4..369022d 100644
> --- a/drivers/watchdog/hpwdt.c
> +++ b/drivers/watchdog/hpwdt.c
> @@ -313,6 +313,11 @@ static int hpwdt_init_one(struct pci_dev *dev,
>   	if (watchdog_init_timeout(&hpwdt_dev, soft_margin, NULL))
>   		dev_warn(&dev->dev, "Invalid soft_margin: %d.\n", soft_margin);
>   
> +#ifdef CONFIG_HPWDT_NMI_DECODING
> +	if (!pretimeout)
> +		hpwdt_dev.pretimeout = 0;
> +#endif
> +

Seems to me that
	hpwdt_dev.pretimeout = pretimeout ? PRETIMEOUT_SEC : 0;
would accomplish the same without ifdef. Also, that would make
the conditional initialization in hpwdt_dev unnecessary,
saving us some more ifdefs.

Guenter