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Date: Mon, 16 Jan 2012 10:19:40 -0800
From: Greg KH <gregkh@suse.de>
To: jhbird.choi@samsung.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] driver-core: Fix null reference in
 subsys_interface_unregister
Message-ID: <20120116181940.GD23628@suse.de>
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On Sat, Jan 14, 2012 at 11:06:03AM +0900, jhbird.choi@samsung.com wrote:
> From: Jonghwan Choi <jhbird.choi@samsung.com>
> 
> Check if the sif is not NULL before de-referencing it

Why would it be?  Have you hit this somehow?  If so, in what code?

thanks,

greg k-h