linux-kernel - Re: [PATCH net-next] tun: fix build warnings

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Date:	Mon, 04 Jul 2016 17:19:45 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jasowang@...hat.com
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	mst@...hat.com, sfr@...b.auug.org.au
Subject: Re: [PATCH net-next] tun: fix build warnings

From: Jason Wang <jasowang@...hat.com>
Date: Mon,  4 Jul 2016 13:53:38 +0800

> Stephen Rothwell reports a build warnings(powerpc ppc64_defconfig)
> 
> drivers/net/tun.c: In function 'tun_do_read.part.5':
> /home/sfr/next/next/drivers/net/tun.c:1491:6: warning: 'err' may be
> used uninitialized in this function [-Wmaybe-uninitialized]
>    int err;
> 
> This is because tun_ring_recv() may return an uninitialized err, fix this.
> 
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Applied, thanks Jason.