tree: https://github.com/lunn/linux.git v5.7-rc4-net-next-cable-test-tdr head: a18dce53d5a2412c66b0bf6c4ad36a027133fb7d commit: c2574fa18c705975cfec42a962b391bec02a2090 [5/6] net: ethtool: Allow PHY cable test TDR data to configured config: arc-vdk_hs38_defconfig (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 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 git checkout c2574fa18c705975cfec42a962b391bec02a2090 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): net/ethtool/cabletest.c: In function 'ethnl_act_cable_test_tdr': 270 | if (pair < ETHTOOL_A_CABLE_PAIR_A || | ^ vim +270 net/ethtool/cabletest.c 225 226 int ethnl_act_cable_test_tdr(struct sk_buff *skb, struct genl_info *info) 227 { 228 struct nlattr *tb[ETHTOOL_A_CABLE_TEST_TDR_MAX + 1]; 229 struct ethnl_req_info req_info = {}; 230 struct net_device *dev; 231 u32 first, last, step; 232 int ret; 233 u8 pair; 234 235 ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb, 236 ETHTOOL_A_CABLE_TEST_TDR_MAX, 237 cable_test_tdr_act_policy, info->extack); 238 if (ret < 0) 239 return ret; 240 241 ret = ethnl_parse_header_dev_get(&req_info, 242 tb[ETHTOOL_A_CABLE_TEST_TDR_HEADER], 243 genl_info_net(info), info->extack, 244 true); 245 if (ret < 0) 246 return ret; 247 248 dev = req_info.dev; 249 if (!dev->phydev) { 250 ret = -EOPNOTSUPP; 251 goto out_dev_put; 252 } 253 254 if (tb[ETHTOOL_A_CABLE_TEST_TDR_FIRST]) 255 first = nla_get_u32(tb[ETHTOOL_A_CABLE_TEST_TDR_FIRST]); 256 else 257 first = 100; 258 if (tb[ETHTOOL_A_CABLE_TEST_TDR_LAST]) 259 last = nla_get_u32(tb[ETHTOOL_A_CABLE_TEST_TDR_LAST]); 260 else 261 last = MAX_CABLE_LENGTH_CM; 262 263 if (tb[ETHTOOL_A_CABLE_TEST_TDR_STEP]) 264 step = nla_get_u32(tb[ETHTOOL_A_CABLE_TEST_TDR_STEP]); 265 else 266 step = 100; 267 268 if (tb[ETHTOOL_A_CABLE_TEST_TDR_PAIR]) { 269 pair = nla_get_u8(tb[ETHTOOL_A_CABLE_TEST_TDR_PAIR]); 271 pair > ETHTOOL_A_CABLE_PAIR_D) { 272 NL_SET_ERR_MSG(info->extack, 273 "invalid pair parameter"); 274 return -EINVAL; 275 } 276 } else { 277 pair = PHY_PAIR_ALL; 278 } 279 280 if (first > MAX_CABLE_LENGTH_CM) { 281 NL_SET_ERR_MSG(info->extack, "invalid first parameter"); 282 return -EINVAL; 283 } 284 285 if (last > MAX_CABLE_LENGTH_CM) { 286 NL_SET_ERR_MSG(info->extack, "invalid last parameter"); 287 return -EINVAL; 288 } 289 290 if (first > last) { 291 NL_SET_ERR_MSG(info->extack, "invalid first/last parameter"); 292 return -EINVAL; 293 } 294 295 if (!step) { 296 NL_SET_ERR_MSG(info->extack, "invalid step parameter"); 297 return -EINVAL; 298 } 299 300 rtnl_lock(); 301 ret = ethnl_ops_begin(dev); 302 if (ret < 0) 303 goto out_rtnl; 304 305 ret = phy_start_cable_test_tdr(dev->phydev, info->extack, 306 first, last, step, pair); 307 308 ethnl_ops_complete(dev); 309 310 if (!ret) 311 ethnl_cable_test_started(dev->phydev, 312 ETHTOOL_MSG_CABLE_TEST_TDR_NTF); 313 314 out_rtnl: 315 rtnl_unlock(); 316 out_dev_put: 317 dev_put(dev); 318 return ret; 319 } 320 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org