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Date: Mon, 25 Feb 2013 17:30:00 -0800
From: "'Tejun Heo'" <tj@kernel.org>
To: Jingoo Han <jg1.han@samsung.com>
Cc: "'Andrew Morton'" <akpm@linux-foundation.org>,
        linux-kernel@vger.kernel.org, "'Greg KH'" <greg@kroah.com>,
        "'Alessandro Zummo'" <a.zummo@towertech.it>,
        rtc-linux@googlegroups.com
Subject: Re: [PATCH V2] rtc: add devm_rtc_device_{register,unregister}()
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On Mon, Feb 25, 2013 at 05:23:17PM -0800, 'Tejun Heo' wrote:
> again, why do we need the WARN_ON() at all given that other
> devm_*_match() don't do that and the only way to get NULL there would
> be bug in devm_rtc*() code itself rather than its users?

Ughh... I see that you probably copied the chunk from clk / regulator
implementation.  Let's please not copy those.  Input validation via
WARN_ON()s is nice when the interface is taking input from outside or
the code in question is complex / fragile.  Here, the code involved is
like 20 lines and self-contained.

Thanks.

-- 
tejun