From mboxrd@z Thu Jan 1 00:00:00 1970 From: davem@davemloft.net (David Miller) Date: Fri, 29 Jan 2016 19:39:32 -0800 (PST) Subject: [PATCHv2] ipv4: ipconfig: avoid unused ic_proto_used symbol In-Reply-To: <2132183.67sfLfLqZb@wuerfel> References: <2132183.67sfLfLqZb@wuerfel> Message-ID: <20160129.193932.2217883845698146411.davem@davemloft.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Arnd Bergmann Date: Thu, 28 Jan 2016 17:39:24 +0100 > When CONFIG_PROC_FS, CONFIG_IP_PNP_BOOTP, CONFIG_IP_PNP_DHCP and > CONFIG_IP_PNP_RARP are all disabled, we get a warning about the > ic_proto_used variable being unused: > > net/ipv4/ipconfig.c:146:12: error: 'ic_proto_used' defined but not used [-Werror=unused-variable] > > This avoids the warning, by making the definition conditional on > whether a dynamic IP configuration protocol is configured. If not, > we know that the value is always zero, so we can optimize away the > variable and all code that depends on it. > > Signed-off-by: Arnd Bergmann Applied.