tree: git://git.armlinux.org.uk/~rmk/linux-arm zii head: 28658ad93ab45ff81673c0013df944af7744337a commit: 1eb84c0b5d28dc19668b17a389e0884c5ded3e1b [52/97] net: phy: marvell10g: add downshift tunable support config: sh-allmodconfig (attached as .config) compiler: sh4-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 1eb84c0b5d28dc19668b17a389e0884c5ded3e1b # save the attached .config to linux build tree GCC_VERSION=9.3.0 make.cross ARCH=sh If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/net/phy/marvell10g.c: In function 'mv3310_get_downshift': 301 | *ds = 1 + FIELD_GET(MV_PCS_DSC1_10GBT, (u16)val); | ^~~~~~~~~ | FOLL_GET drivers/net/phy/marvell10g.c: In function 'mv3310_set_downshift': 330 | val = FIELD_PREP(MV_PCS_DSC2_2P5G, ds); | ^~~~~~~~~~ cc1: some warnings being treated as errors vim +301 drivers/net/phy/marvell10g.c 286 287 static int mv3310_get_downshift(struct phy_device *phydev, u8 *ds) 288 { 289 struct mv3310_priv *priv = dev_get_drvdata(&phydev->mdio.dev); 290 int val; 291 292 if (priv->firmware_ver < MV_VERSION(0,3,5,0)) 293 return -EOPNOTSUPP; 294 295 val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_DSC1); 296 if (val < 0) 297 return val; 298 299 if (val & MV_PCS_DSC1_ENABLE) 300 /* assume that all fields are the same */ 302 else 303 *ds = DOWNSHIFT_DEV_DISABLE; 304 305 return 0; 306 } 307 308 static int mv3310_set_downshift(struct phy_device *phydev, u8 ds) 309 { 310 struct mv3310_priv *priv = dev_get_drvdata(&phydev->mdio.dev); 311 u16 val; 312 int err; 313 314 /* Fails to downshift with v0.3.5.0 and earlier */ 315 if (priv->firmware_ver < MV_VERSION(0,3,5,0)) 316 return -EOPNOTSUPP; 317 318 if (ds == DOWNSHIFT_DEV_DISABLE) 319 return phy_clear_bits_mmd(phydev, MDIO_MMD_PCS, MV_PCS_DSC1, 320 MV_PCS_DSC1_ENABLE); 321 322 /* FIXME: The default is disabled, so should we disable? */ 323 if (ds == DOWNSHIFT_DEV_DEFAULT_COUNT) 324 ds = 2; 325 326 if (ds > 8) 327 return -E2BIG; 328 329 ds -= 1; 331 val |= FIELD_PREP(MV_PCS_DSC2_5G, ds); 332 err = phy_modify_mmd(phydev, MDIO_MMD_PCS, MV_PCS_DSC2, 333 MV_PCS_DSC2_2P5G | MV_PCS_DSC2_5G, val); 334 if (err < 0) 335 return err; 336 337 val = MV_PCS_DSC1_ENABLE; 338 val |= FIELD_PREP(MV_PCS_DSC1_10GBT, ds); 339 val |= FIELD_PREP(MV_PCS_DSC1_1GBR, ds); 340 val |= FIELD_PREP(MV_PCS_DSC1_100BTX, ds); 341 342 return phy_modify_mmd(phydev, MDIO_MMD_PCS, MV_PCS_DSC1, 343 MV_PCS_DSC1_ENABLE | MV_PCS_DSC1_10GBT | 344 MV_PCS_DSC1_1GBR | MV_PCS_DSC1_100BTX, val); 345 } 346 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org