linux-kernel - Re: [PATCH 1/4] rtc: sa1100: enable/disable rtc when probe/remove the device

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Message-ID: <20121129102519.GG19440@n2100.arm.linux.org.uk>
Date:	Thu, 29 Nov 2012 10:25:19 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Chao Xie <chao.xie@...vell.com>
Cc:	a.zummo@...ertech.it, rtc-linux@...glegroups.com,
	linux-kernel@...r.kernel.org, haojian.zhuang@...il.com,
	linux-arm-kernel@...ts.infradead.org, xiechao.mail@...il.com
Subject: Re: [PATCH 1/4] rtc: sa1100: enable/disable rtc when probe/remove
	the device

On Wed, Nov 28, 2012 at 09:21:07PM -0500, Chao Xie wrote:
> The original sa1100_rtc_open/sa1100_rtc_release will be called
> when the /dev/rtc0 is opened or closed.
> In fact, these two functions will enable/disable the clock, and
> register/unregister the irqs.
> User application will use /dev/rtc0 to read the rtc time or set
> the alarm. The rtc should still run indepent of open/close the
> rtc device.
> So only enable clock and register the irqs when probe the device,
> and disable clock and unregister the irqs when remove the device.

NAK.  I don't think you properly understand what's going on here if you
think moving the entire open and release functions into the probe and
remove functions is the right thing to do.
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