tree: https://github.com/intel/linux-intel-lts.git 5.4/yocto head: 87241c08286384feb3ddc57d4cb0daca4be1e384 commit: 6db3546e9e4811b396273585711d79de67ec2707 [206/9195] net: stmmac: Add support for VLAN promiscuous mode config: parisc-randconfig-r021-20200811 (attached as .config) compiler: hppa-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 6db3546e9e4811b396273585711d79de67ec2707 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc 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 >>): In file included from include/linux/mm.h:99, from include/linux/bvec.h:13, from include/linux/skbuff.h:17, from include/linux/if_ether.h:19, from include/uapi/linux/ethtool.h:19, from include/linux/ethtool.h:18, from drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c:15: include/asm-generic/pgtable.h: In function 'pte_clear_not_present_full': arch/parisc/include/asm/pgtable.h:91:9: warning: variable 'old_pte' set but not used [-Wunused-but-set-variable] 91 | pte_t old_pte; \ | ^~~~~~~ arch/parisc/include/asm/pgtable.h:316:34: note: in expansion of macro 'set_pte_at' 316 | #define pte_clear(mm, addr, xp) set_pte_at(mm, addr, xp, __pte(0)) | ^~~~~~~~~~ include/asm-generic/pgtable.h:201:2: note: in expansion of macro 'pte_clear' 201 | pte_clear(mm, address, ptep); | ^~~~~~~~~ include/asm-generic/pgtable.h: In function '__ptep_modify_prot_commit': arch/parisc/include/asm/pgtable.h:91:9: warning: variable 'old_pte' set but not used [-Wunused-but-set-variable] 91 | pte_t old_pte; \ | ^~~~~~~ include/asm-generic/pgtable.h:629:2: note: in expansion of macro 'set_pte_at' 629 | set_pte_at(vma->vm_mm, addr, ptep, pte); | ^~~~~~~~~~ drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c: In function 'dwmac4_vlan_promisc_enable': 548 | u32 hash; | ^~~~ vim +/hash +548 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c 542 543 static void dwmac4_vlan_promisc_enable(struct net_device *dev, 544 struct mac_device_info *hw) 545 { 546 void __iomem *ioaddr = hw->pcsr; 547 u32 value; 549 u32 val; 550 int i; 551 552 /* Single Rx VLAN Filter */ 553 if (hw->num_vlan == 1) { 554 dwmac4_write_single_vlan(dev, 0); 555 return; 556 } 557 558 /* Extended Rx VLAN Filter Enable */ 559 for (i = 0; i < hw->num_vlan; i++) { 560 if (hw->vlan_filter[i] & GMAC_VLAN_TAG_DATA_VEN) { 561 val = hw->vlan_filter[i] & ~GMAC_VLAN_TAG_DATA_VEN; 562 dwmac4_write_vlan_filter(dev, hw, i, val); 563 } 564 } 565 566 hash = readl(ioaddr + GMAC_VLAN_HASH_TABLE); 567 value = readl(ioaddr + GMAC_VLAN_TAG); 568 if (value & GMAC_VLAN_VTHM) { 569 value &= ~GMAC_VLAN_VTHM; 570 writel(value, ioaddr + GMAC_VLAN_TAG); 571 } 572 } 573 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org