linux-kernel - Re: [PATCH] watchdog: add Nano 7240 driver

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Date:	Tue, 23 Oct 2007 19:29:48 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Gilles Gigan <gilles.gigan@...il.com>
Cc:	wim@...ana.be, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] watchdog: add Nano 7240 driver

On Wed, 24 Oct 2007 12:11:59 +1000 Gilles Gigan <gilles.gigan@...il.com> wrote:

> +	case WDIOC_SETOPTIONS:{
> +			int retval = -EINVAL;
> +
> +			if (arg & WDIOS_DISABLECARD) {
> +				wdt_disable();
> +				retval = 0;
> +			}
> +
> +			if (arg & WDIOS_ENABLECARD) {
> +				wdt_enable();
> +				retval = 0;
> +			}
> +
> +			return retval;

hrm.  So if userspace does ioctl(..., WDIOS_DISABLECARD|WDIOS_ENABLECARD,
that happens to be equivalent to WDIOS_ENABLECARD?

Do all watchdog drivers do it exactly the same way, or are we offering
inconsistent interfaces between different drivers?

An exceedingly minor point, but fun nonetheless.

(And hey, I had to say _something_)

(apart from directing your attention to scripts/checkpatch.pl)
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