tree: git://git.armlinux.org.uk/~rmk/linux-arm.git zii head: 3aa548572ce7d943c33ccb14ea1d5fe4027e2d47 commit: 4e14d82eda5c2b311ae01271d353e8f948468c81 [29/83] net: mtk_eth_soc: use resolved link config for PCS PHY config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-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 4e14d82eda5c2b311ae01271d353e8f948468c81 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/net/ethernet/mediatek/mtk_eth_soc.c:68:5: warning: no previous prototype for 'mtk_m32' [-Wmissing-prototypes] 68 | u32 mtk_m32(struct mtk_eth *eth, u32 mask, u32 set, unsigned reg) | ^~~~~~~ In file included from drivers/net/ethernet/mediatek/mtk_eth_soc.c:23: drivers/net/ethernet/mediatek/mtk_eth_soc.c: In function 'mtk_mac_link_up': 428 | int sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ? | ^~~ drivers/net/ethernet/mediatek/mtk_eth_soc.h:761:36: note: in definition of macro 'MTK_HAS_CAPS' 761 | #define MTK_HAS_CAPS(caps, _x) (((caps) & (_x)) == (_x)) | ^~~~ drivers/net/ethernet/mediatek/mtk_eth_soc.c:428:27: note: each undeclared identifier is reported only once for each function it appears in 428 | int sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ? | ^~~ drivers/net/ethernet/mediatek/mtk_eth_soc.h:761:36: note: in definition of macro 'MTK_HAS_CAPS' 761 | #define MTK_HAS_CAPS(caps, _x) (((caps) & (_x)) == (_x)) | ^~~~ vim +/eth +428 drivers/net/ethernet/mediatek/mtk_eth_soc.c 416 417 static void mtk_mac_link_up(struct phylink_config *config, 418 struct phy_device *phy, 419 unsigned int mode, phy_interface_t interface, 420 int speed, int duplex, bool tx_pause, bool rx_pause) 421 { 422 struct mtk_mac *mac = container_of(config, struct mtk_mac, 423 phylink_config); 424 u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); 425 426 if (phy_interface_mode_is_8023z(interface)) { 427 /* Decide how GMAC and SGMIISYS be mapped */ 429 0 : mac->id; 430 mtk_sgmii_link_up(eth->sgmii, sid, speed, duplex); 431 } 432 433 mcr &= ~(MAC_MCR_SPEED_100 | MAC_MCR_SPEED_1000 | 434 MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_TX_FC | 435 MAC_MCR_FORCE_RX_FC); 436 437 /* Configure speed */ 438 switch (speed) { 439 case SPEED_2500: 440 case SPEED_1000: 441 mcr |= MAC_MCR_SPEED_1000; 442 break; 443 case SPEED_100: 444 mcr |= MAC_MCR_SPEED_100; 445 break; 446 } 447 448 /* Configure duplex */ 449 if (duplex == DUPLEX_FULL) 450 mcr |= MAC_MCR_FORCE_DPX; 451 452 /* Configure pause modes - phylink will avoid these for half duplex */ 453 if (tx_pause) 454 mcr |= MAC_MCR_FORCE_TX_FC; 455 if (rx_pause) 456 mcr |= MAC_MCR_FORCE_RX_FC; 457 458 mcr |= MAC_MCR_TX_EN | MAC_MCR_RX_EN; 459 mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); 460 } 461 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org