Hi Oleksij, I love your patch! Perhaps something to improve: [auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Oleksij-Rempel/net-phy-dp83td510... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 4431531c482a2c05126caaa9fcc5053a4a5c495b config: sh-allmodconfig (attached as .config) compiler: sh4-linux-gcc (GCC) 10.3.0 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 # https://github.com/0day-ci/linux/commit/b58ac37ec2e1ecf8d19fd6f7da3d8d23d... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Oleksij-Rempel/net-phy-dp83td510-Add-basic-support-for-the-DP83TD510-Ethernet-PHY/20210723-184426 git checkout b58ac37ec2e1ecf8d19fd6f7da3d8d23ddc92d61 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=sh 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 >>): drivers/net/phy/dp83td510.c: In function 'dp83td510_strap': 237 | int tx_vpp, pin18, rx_trap, pin30, rx_ctrl; | ^~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA Selected by - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC vim +/rx_ctrl +237 drivers/net/phy/dp83td510.c 234 235 static int dp83td510_strap(struct phy_device *phydev) 236 { 238 enum dp83td510_xmii_mode xmii_mode; 239 int sor0, sor1; 240 u8 addr; 241 242 sor0 = dp83td510_read(phydev, DP83TD510_SOR_0); 243 if (sor0 < 0) 244 return sor0; 245 246 rx_trap = FIELD_GET(DP83TD510_SOR_0_GPIO2, sor0); 247 248 sor1 = dp83td510_read(phydev, DP83TD510_SOR_1); 249 if (sor1 < 0) 250 return sor0; 251 252 addr = FIELD_GET(DP83TD510_SOR_1_RX_D3, sor1) << 3 | 253 FIELD_GET(DP83TD510_SOR_1_RX_D0, sor1) << 2 | 254 FIELD_GET(DP83TD510_SOR_1_RX_ER, sor1) << 1 | 255 FIELD_GET(DP83TD510_SOR_1_GPIO1, sor1) << 0; 256 257 tx_vpp = FIELD_GET(DP83TD510_SOR_1_LED_2, sor1); 258 xmii_mode = FIELD_GET(DP83TD510_SOR_1_LED_0, sor1) << 1 | 259 FIELD_GET(DP83TD510_SOR_1_RX_D1, sor1) << 0; 260 pin18 = FIELD_GET(DP83TD510_SOR_1_RX_D2, sor1); 261 pin30 = FIELD_GET(DP83TD510_SOR_1_CLK_OUT, sor1); 262 rx_ctrl = FIELD_GET(DP83TD510_SOR_1_RX_CTRL, sor1); 263 264 phydev_info(phydev, 265 "bootstrap cfg: Pin 18: %s, Pin 30: %s, TX Vpp: %s, RX trap: %s, xMII mode: %s, PHY addr: 0x%x\n", 266 pin18 ? "RX_DV" : "CRS_DV", 267 pin30 ? "LED_1" : "CLKOUT", 268 tx_vpp ? "1.0V p2p" : "2.4V & 1.0V p2p", 269 rx_trap ? "< 40Ω" : "50Ω", 270 dp83td510_get_xmii_mode_str(xmii_mode), 271 addr); 272 273 return 0; 274 } 275 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org