linux-kernel - Re: [PATCH 3/4] bridge: always declare tunnel functions

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Message-ID: <63f12ee5-bd7d-a734-af98-e99196d84441@blackwall.org>
Date:   Wed, 17 May 2023 10:33:03 +0300
From:   Nikolay Aleksandrov <razor@...ckwall.org>
To:     Arnd Bergmann <arnd@...nel.org>, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Roopa Prabhu <roopa@...dia.com>,
        bridge@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] bridge: always declare tunnel functions

On 16/05/2023 22:45, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> When CONFIG_BRIDGE_VLAN_FILTERING is disabled, two functions are still
> defined but have no prototype or caller. This causes a W=1 warning for
> the missing prototypes:
> 
> net/bridge/br_netlink_tunnel.c:29:6: error: no previous prototype for 'vlan_tunid_inrange' [-Werror=missing-prototypes]
> net/bridge/br_netlink_tunnel.c:199:5: error: no previous prototype for 'br_vlan_tunnel_info' [-Werror=missing-prototypes]
> 
> The functions are already contitional on CONFIG_BRIDGE_VLAN_FILTERING,
> and I coulnd't easily figure out the right set of #ifdefs, so just
> move the declarations out of the #ifdef to avoid the warning,
> at a small cost in code size over a more elaborate fix.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  net/bridge/br_private_tunnel.h | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 

This should be for -net.

Fixes: 188c67dd1906 ("net: bridge: vlan options: add support for tunnel id dumping")
Fixes: 569da0822808 ("net: bridge: vlan options: add support for tunnel mapping set/del")
Acked-by: Nikolay Aleksandrov <razor@...ckwall.org>

Thanks,
 Nik