netdev - Re: [PATCH 1/3] vxlan: silence one build warning

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Date:	Mon, 28 Oct 2013 00:38:07 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	stephen@...workplumber.org
Cc:	zwu.kernel@...il.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, wuzhy@...ux.vnet.ibm.com
Subject: Re: [PATCH 1/3] vxlan: silence one build warning

From: Stephen Hemminger <stephen@...workplumber.org>
Date: Fri, 25 Oct 2013 08:41:34 -0700

> I would rather not fix the warning this way since it risks masking
> later bugs if this code ever changes.

But this is suboptimally coded, and is asking for the warning.

Anything returning a pointer by reference is asking for trouble
in my opinion.

The correct thing to do is to make create_v{4,6}_sock() return
the "struct socket *" as an error pointer.

No more ambiguous initializations, no more warnings.
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