linux-kernel - Re: [PATCH] ip_vti: fix sparse warnings for VTI

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Message-Id: <20140611.154102.358172856037880938.davem@davemloft.net>
Date:	Wed, 11 Jun 2014 15:41:02 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	ixaphire@...tor.net
Cc:	steffen.klassert@...unet.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, trivial@...nel.org
Subject: Re: [PATCH] ip_vti: fix sparse warnings for VTI_ISVTI

From: Dmitry Popov <ixaphire@...tor.net>
Date: Wed, 11 Jun 2014 15:09:14 +0400

> This patch fixes the following sparse warnings:
> 
> net/ipv4/ip_tunnel.c:245:53: warning: restricted __be16 degrades to integer
> net/ipv4/ip_vti.c:321:19: warning: incorrect type in assignment (different base types)
> net/ipv4/ip_vti.c:321:19:    expected restricted __be16 [addressable] [assigned] [usertype] i_flags
> net/ipv4/ip_vti.c:321:19:    got int
> net/ipv4/ip_vti.c:447:24: warning: incorrect type in assignment (different base types)
> net/ipv4/ip_vti.c:447:24:    expected restricted __be16 [usertype] i_flags
> net/ipv4/ip_vti.c:447:24:    got int
> 
> Since VTI_ISVTI is always used with ip_tunnel_parm->i_flags (which is __be16),
> we can __force cast VTI_ISVTI to __be16 in header file.
> 
> Signed-off-by: Dmitry Popov <ixaphire@...tor.net>

Applied.
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