linux-kernel - Re: [PATCH V2] rtc: add devm_rtc_device

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Date:	Wed, 27 Feb 2013 11:12:17 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Dmitry Torokhov' <dmitry.torokhov@...il.com>
Cc:	'Andrew Morton' <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, 'Tejun Heo' <tj@...nel.org>,
	'Greg KH' <greg@...ah.com>,
	'Alessandro Zummo' <a.zummo@...ertech.it>,
	rtc-linux@...glegroups.com, 'Jingoo Han' <jg1.han@...sung.com>
Subject: Re: [PATCH V2] rtc: add devm_rtc_device_{register,unregister}()

On Wednesday, February 27, 2013 7:33 AM, Dmitry Torokhov wrote:
> 
> On Tue, Feb 26, 2013 at 10:21:06AM +0900, Jingoo Han wrote:
> > +/**
> > + * devm_rtc_device_unregister - resource managed devm_rtc_device_unregister()
> > + * @dev: the device to unregister
> > + * @rtc: the RTC class device to unregister
> > + *
> > + * Deallocated a rtc allocated with devm_rtc_device_register(). Normally this
> > + * function will not need to be called and the resource management code will
> > + * ensure that the resource is freed.
> > + */
> > +void devm_rtc_device_unregister(struct device *dev, struct rtc_device *rtc)
> 
> Why do you need a separate function? You can add a flag to struct rtc_device
> so it knows whether it is devm-managed or not and behave accordingly.
> And then you can do
> 
> #define devm_rtc_device_unregister rtc_device_unregister

Um, I don't prefer that way using additional a flag.

Also, most of other devm_* functions are using a separate functions
such as devm_pwm_put(), devm_regulator_put(),devm_usb_put_phy(), etc.


> 
> Thanks.
> 
> --
> Dmitry

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