From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shan Wei Subject: Re: [PATCH] net: core: fix unused variable sparse warning Date: Fri, 07 Dec 2012 18:45:20 +0800 Message-ID: <50C1C8C0.2020006@gmail.com> References: <1354838913-20084-1-git-send-email-dinggnu@gmail.com> <20121207001545.GE2510@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: "David S. Miller" , "Eric W. Biederman" , Eric Dumazet , Pavel Emelyanov , netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: Cong Ding Return-path: In-Reply-To: <20121207001545.GE2510@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Cong Ding said, at 2012/12/7 8:15: > On Fri, Dec 07, 2012 at 12:06:44AM +0000, Cong Ding wrote: >> the variables zero and unres_qlen_max are only used when CONFIG_SYSC= TL is >> defined, otherwise it causes the following sparse warning when we tu= rn on >> CONFIG_SYSCTL. > sorry for disturbing again, the sparse warning is > net/core/neighbour.c:65:12: warning: =E2=80=98zero=E2=80=99 defined b= ut not used [-Wunused-variable] > net/core/neighbour.c:66:12: warning: =E2=80=98unres_qlen_max=E2=80=99= defined but not used [-Wunused-variable] >=20 > it happens if we turn off CONFIG_SYSCTL. It has been fixed yesterday. see b93196dc5af7729ff7cc50d3d322ab1a364aa14f >=20 >> >> Signed-off-by: Cong Ding >> --- >> net/core/neighbour.c | 2 ++ >> 1 files changed, 2 insertions(+), 0 deletions(-) >> >> diff --git a/net/core/neighbour.c b/net/core/neighbour.c >> index 36fc692..4a15278 100644 >> --- a/net/core/neighbour.c >> +++ b/net/core/neighbour.c >> @@ -62,8 +62,10 @@ static void __neigh_notify(struct neighbour *n, i= nt type, int flags); >> static void neigh_update_notify(struct neighbour *neigh); >> static int pneigh_ifdown(struct neigh_table *tbl, struct net_device= *dev); >> =20 >> +#ifdef CONFIG_SYSCTL >> static int zero; >> static int unres_qlen_max =3D INT_MAX / SKB_TRUESIZE(ETH_FRAME_LEN)= ; >> +#endif >> =20 >> static struct neigh_table *neigh_tables; >> #ifdef CONFIG_PROC_FS >> --=20 >> 1.7.4.5 >> > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >=20