linux-kernel - Re: [PATCH] ipv6: fib: hide unused 'pn' variable

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Date: Fri, 22 Mar 2024 13:25:49 +0000
From: Simon Horman <horms@...nel.org>
To: Arnd Bergmann <arnd@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>,
	David Ahern <dsahern@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>,
	Ville Nuorvala <vnuorval@....hut.fi>, Arnd Bergmann <arnd@...db.de>,
	Kui-Feng Lee <thinker.li@...il.com>,
	Breno Leitao <leitao@...ian.org>, Kunwu Chan <chentao@...inos.cn>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipv6: fib: hide unused 'pn' variable

On Fri, Mar 22, 2024 at 02:14:10PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> When CONFIG_IPV6_SUBTREES is disabled, the only user is hidden, causing
> a 'make W=1' warning:
> 
> net/ipv6/ip6_fib.c: In function 'fib6_add':
> net/ipv6/ip6_fib.c:1388:32: error: variable 'pn' set but not used [-Werror=unused-but-set-variable]
> 
> Add another #ifdef around the variable declaration, matching the other
> uses in this file.
> 
> Fixes: 66729e18df08 ("[IPV6] ROUTE: Make sure we have fn->leaf when adding a node on subtree.")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

## Form letter - net-next-closed

(text from Jakub)

The merge window for v6.9 has begun and therefore net-next is closed
for new drivers, features, code refactoring and optimizations.
We are currently accepting bug fixes only.

Please repost when net-next reopens after March 25th.

RFC patches sent for review only are welcome at any time.

See: https://www.kernel.org/doc/html/next/process/maintainer-netdev.html#development-cycle
--
pw-bot: defer