From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bart Van Assche <bart.vanassche@sandisk.com>
Subject: Re: [PATCH] acpi: Use NULL from <linux/stddef.h>
Date: Wed, 16 Nov 2016 09:15:13 -0800
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To: "Moore, Robert" <robert.moore@intel.com>, "Rafael J. Wysocki" <rafael@kernel.org>, "Zheng, Lv" <lv.zheng@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>, Len Brown <lenb@kernel.org>, "linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>

On 11/16/2016 09:08 AM, Moore, Robert wrote:
> What is the point of these changes?

What's the point of redefining NULL? What's the point of casting a void 
pointer to void *?

Bart.