linux-kernel - Re: [RFE PATCH 2/2] rtc, add write functionality to sysfs

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Message-ID: <5127DDAF.2000403@linaro.org>
Date:	Fri, 22 Feb 2013 13:05:51 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	Prarit Bhargava <prarit@...hat.com>
CC:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	x86@...nel.org, Matt Fleming <matt.fleming@...el.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...ux.intel.com>, linux-efi@...r.kernel.org,
	Alessandro Zummo <a.zummo@...ertech.it>
Subject: Re: [RFE PATCH 2/2] rtc, add write functionality to sysfs

On 02/22/2013 12:55 PM, Prarit Bhargava wrote:
>
> On 02/22/2013 03:43 PM, John Stultz wrote:
>> On 02/14/2013 09:02 AM, Prarit Bhargava wrote:
>>> /sys/class/rtc/rtcX/date and /sys/class/rtc/rtcX/time currently have
>>> read-only access.  This patch introduces write functionality which will
>>> set the rtc time.
>>>
>>> Usage: echo YYYY-MM-DD > /sys/class/rtc/rtcX/date
>>>          echo HH:MM:SS > /sys/class/rtc/rtcX/time
>> Why do we want to add a new interface here?
> John,
>
> I'm not adding a new interface.  The current date/time interface only handles
> read and I'm introducing write.
>

Right, but what benefit does that provide?
(I'm not saying there isn't any, its just not clear from your patch why 
this is a good thing.)

Also CC'ing Alessandro for his input.

thanks
-john


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