linux-kernel - Re: [PATCH v2] rtc: max8997: Add driver for max8997 rtc.

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Date:	Thu, 7 Feb 2013 13:44:01 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jonghwa Lee <jonghwa3.lee@...sung.com>
Cc:	linux-kernel@...r.kernel.org, a.zummo@...ertech.it,
	rtc-linux@...glegroups.com
Subject: Re: [PATCH v2] rtc: max8997: Add driver for max8997 rtc.

On Thu, 07 Feb 2013 20:01:27 +0900
Jonghwa Lee <jonghwa3.lee@...sung.com> wrote:

> This patch adds rtc driver for Maxim 8997 multifunction chip.
> Max8997 has rtc module in it. and it can be used for timekeeping
> clock and system alarm. It provide various operational mode those are
> BCD/binary, 24/12hour, am/pm. Driver sets binary/24/ for default.
> Maxim 8997 also supports SMPL(Sudden Momentary Power Loss), WTSR
> (Watchdog Timeout and Software Reset).
> 
> Signed-off-by: Jonghwa Lee <jonghwa3.lee@...sung.com>
> ---
> v2
>  - Add module parameter to enable/disable WTSR, SMPL fuction.
>  - Add unregister_rtc_device() for accidental exit in probing.
>
> ...
>
> +/* Module parameter for WTSR function control */
> +static int wtsr_en = 1;
> +module_param(wtsr_en, int, 0444);
> +MODULE_PARM_DESC(wtsr_en, "Wachdog Timeout & Sofware Reset (default=on)");
> +/* Module parameter for SMPL function control */
> +static int smpl_en = 1;
> +module_param(smpl_en, int, 0444);
> +MODULE_PARM_DESC(smpl_en, "Sudden Momentary Power Loss (default=on)");

"default=on" is interesting.  For what reasons would a user ever want
to set this "off"?  Can we just remove the options and leave these
things enabled all the time for everyone?

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