Hi Stephen, [auto build test WARNING on net-next/master]
url: https://github.com/0day-ci/linux/commits/Stephen-Hemminger/net-make-ndo_get_stats64-a-void-function/20170106-160123 config: xtensa-allmodconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 4.9.0 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=xtensa All warnings (new ones prefixed by >>): drivers/net/macsec.c: In function 'macsec_get_stats64': >> drivers/net/macsec.c:2897:3: warning: 'return' with a value, in function >> returning void return s; ^ vim +/return +2897 drivers/net/macsec.c c09440f7 Sabrina Dubroca 2016-03-11 2881 unsigned int extra = macsec->secy.icv_len + macsec_extra_len(true); c09440f7 Sabrina Dubroca 2016-03-11 2882 c09440f7 Sabrina Dubroca 2016-03-11 2883 if (macsec->real_dev->mtu - extra < new_mtu) c09440f7 Sabrina Dubroca 2016-03-11 2884 return -ERANGE; c09440f7 Sabrina Dubroca 2016-03-11 2885 c09440f7 Sabrina Dubroca 2016-03-11 2886 dev->mtu = new_mtu; c09440f7 Sabrina Dubroca 2016-03-11 2887 c09440f7 Sabrina Dubroca 2016-03-11 2888 return 0; c09440f7 Sabrina Dubroca 2016-03-11 2889 } c09440f7 Sabrina Dubroca 2016-03-11 2890 1e665d95 Stephen Hemminger 2017-01-05 2891 static void macsec_get_stats64(struct net_device *dev, c09440f7 Sabrina Dubroca 2016-03-11 2892 struct rtnl_link_stats64 *s) c09440f7 Sabrina Dubroca 2016-03-11 2893 { c09440f7 Sabrina Dubroca 2016-03-11 2894 int cpu; c09440f7 Sabrina Dubroca 2016-03-11 2895 c09440f7 Sabrina Dubroca 2016-03-11 2896 if (!dev->tstats) c09440f7 Sabrina Dubroca 2016-03-11 @2897 return s; c09440f7 Sabrina Dubroca 2016-03-11 2898 c09440f7 Sabrina Dubroca 2016-03-11 2899 for_each_possible_cpu(cpu) { c09440f7 Sabrina Dubroca 2016-03-11 2900 struct pcpu_sw_netstats *stats; c09440f7 Sabrina Dubroca 2016-03-11 2901 struct pcpu_sw_netstats tmp; c09440f7 Sabrina Dubroca 2016-03-11 2902 int start; c09440f7 Sabrina Dubroca 2016-03-11 2903 c09440f7 Sabrina Dubroca 2016-03-11 2904 stats = per_cpu_ptr(dev->tstats, cpu); c09440f7 Sabrina Dubroca 2016-03-11 2905 do { :::::: The code at line 2897 was first introduced by commit :::::: c09440f7dcb304002dfced8c0fea289eb25f2da0 macsec: introduce IEEE 802.1AE driver :::::: TO: Sabrina Dubroca <s...@queasysnail.net> :::::: CC: David S. Miller <da...@davemloft.net> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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