Hi Vladimir, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Vladimir-Oltean/Remove-the-dsa_t... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 4ef3960ea19c3b2bced37405b251f05fd4b35545 config: x86_64-randconfig-a016-20210810 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d39ebdae674c8efc84ebe8dc32716ec353220530) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/ed3baa791b1827372c9df651fca62a915... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vladimir-Oltean/Remove-the-dsa_to_port-in-a-loop-antipattern/20210811-002035 git checkout ed3baa791b1827372c9df651fca62a9152f2c852 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): err = mv88e6xxx_port_add_broadcast(chip, port, vid); ^~~~ drivers/net/dsa/mv88e6xxx/chip.c:1996:10: note: initialize the variable 'port' to silence this warning int port; ^ = 0 1 warning generated. -- default_l2_lookup_params.maxaddrp[port] = max_fdb_entries; ^~~~ drivers/net/dsa/sja1105/sja1105_main.c:383:10: note: initialize the variable 'port' to silence this warning int port, num_used_ports = 0; ^ = 0 1 warning generated. vim +/port +2009 drivers/net/dsa/mv88e6xxx/chip.c 87fa886e1fb7d0 Andrew Lunn 2017-11-09 1991 87fa886e1fb7d0 Andrew Lunn 2017-11-09 1992 static int mv88e6xxx_broadcast_setup(struct mv88e6xxx_chip *chip, u16 vid) 87fa886e1fb7d0 Andrew Lunn 2017-11-09 1993 { ed3baa791b1827 Vladimir Oltean 2021-08-10 1994 struct dsa_switch *ds = chip->ds; ed3baa791b1827 Vladimir Oltean 2021-08-10 1995 struct dsa_port *dp; 87fa886e1fb7d0 Andrew Lunn 2017-11-09 1996 int port; 87fa886e1fb7d0 Andrew Lunn 2017-11-09 1997 int err; 87fa886e1fb7d0 Andrew Lunn 2017-11-09 1998 ed3baa791b1827 Vladimir Oltean 2021-08-10 1999 dsa_switch_for_each_available_port(dp, ds) { 8d1d8298eb0075 Tobias Waldekranz 2021-03-18 2000 struct net_device *brport; 8d1d8298eb0075 Tobias Waldekranz 2021-03-18 2001 8d1d8298eb0075 Tobias Waldekranz 2021-03-18 2002 brport = dsa_port_to_bridge_port(dp); 8d1d8298eb0075 Tobias Waldekranz 2021-03-18 2003 if (brport && !br_port_flag_is_set(brport, BR_BCAST_FLOOD)) 8d1d8298eb0075 Tobias Waldekranz 2021-03-18 2004 /* Skip bridged user ports where broadcast 8d1d8298eb0075 Tobias Waldekranz 2021-03-18 2005 * flooding is disabled. 8d1d8298eb0075 Tobias Waldekranz 2021-03-18 2006 */ 8d1d8298eb0075 Tobias Waldekranz 2021-03-18 2007 continue; 8d1d8298eb0075 Tobias Waldekranz 2021-03-18 2008 87fa886e1fb7d0 Andrew Lunn 2017-11-09 @2009 err = mv88e6xxx_port_add_broadcast(chip, port, vid); 87fa886e1fb7d0 Andrew Lunn 2017-11-09 2010 if (err) 87fa886e1fb7d0 Andrew Lunn 2017-11-09 2011 return err; 87fa886e1fb7d0 Andrew Lunn 2017-11-09 2012 } 87fa886e1fb7d0 Andrew Lunn 2017-11-09 2013 87fa886e1fb7d0 Andrew Lunn 2017-11-09 2014 return 0; 87fa886e1fb7d0 Andrew Lunn 2017-11-09 2015 } 87fa886e1fb7d0 Andrew Lunn 2017-11-09 2016 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org