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Date: Mon, 7 Sep 2020 20:49:21 -0700 From: Jakub Kicinski <kuba@...nel.org> To: Stephen Rothwell <sfr@...b.auug.org.au>, Nikolay Aleksandrov <nikolay@...ulusnetworks.com> Cc: David Miller <davem@...emloft.net>, Networking <netdev@...r.kernel.org>, Linux Next Mailing List <linux-next@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: linux-next: build warning after merge of the net-next tree On Tue, 8 Sep 2020 13:00:00 +1000 Stephen Rothwell wrote: > Hi all, > > After merging the net-next tree, today's linux-next build (powerpc > ppc64_defconfig) produced this warning: > > net/bridge/br_multicast.c: In function 'br_multicast_find_port': > net/bridge/br_multicast.c:1818:21: warning: unused variable 'br' [-Wunused-variable] > 1818 | struct net_bridge *br = mp->br; > | ^~ > > Introduced by commit > > 0436862e417e ("net: bridge: mcast: support for IGMPv3/MLDv2 ALLOW_NEW_SOURCES report") > > Maybe turning mlock_dereference into a static inline function would help. Or perhaps provide a better definition of whatever is making the reference disappear? RCU_LOCKDEP_WARN()? Thanks for the report!
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