tree: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master head: 8d63ee602da381c437c0a4ef7ea882b71d829eb6 commit: 8d63ee602da381c437c0a4ef7ea882b71d829eb6 [16/16] cxgb4: Search VPD with pci_vpd_find_ro_info_keyword() config: riscv-randconfig-r014-20210822 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 79b55e5038324e61a3abf4e6a9a949c473edd858) 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 # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit... git remote add net-next https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git git fetch --no-tags net-next master git checkout 8d63ee602da381c437c0a4ef7ea882b71d829eb6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 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 >>): In file included from drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:36: In file included from drivers/net/ethernet/chelsio/cxgb4/cxgb4.h:42: In file included from include/linux/ethtool.h:18: In file included from include/uapi/linux/ethtool.h:19: In file included from include/linux/if_ether.h:19: In file included from include/linux/skbuff.h:31: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:36:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:36: In file included from drivers/net/ethernet/chelsio/cxgb4/cxgb4.h:42: In file included from include/linux/ethtool.h:18: In file included from include/uapi/linux/ethtool.h:19: In file included from include/linux/if_ether.h:19: In file included from include/linux/skbuff.h:31: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:34:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:36: In file included from drivers/net/ethernet/chelsio/cxgb4/cxgb4.h:42: In file included from include/linux/ethtool.h:18: In file included from include/uapi/linux/ethtool.h:19: In file included from include/linux/if_ether.h:19: In file included from include/linux/skbuff.h:31: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; ~~~~~~~~~~ ^ drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:2775:8: error: implicit declaration of function 'pci_vpd_check_csum' [-Werror,-Wimplicit-function-declaration] ret = pci_vpd_check_csum(vpd, VPD_LEN); ^ ret = pci_vpd_find_ro_info_keyword(vpd, VPD_LEN, ^ drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:2782:8: note: did you mean 'pci_vpd_find_info_keyword'? include/linux/pci.h:2349:5: note: 'pci_vpd_find_info_keyword' declared here int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, ^ 7 warnings and 2 errors generated. vim +/pci_vpd_find_ro_info_keyword +2782 drivers/net/ethernet/chelsio/cxgb4/t4_hw.c 2736 2737 /** 2738 * t4_get_raw_vpd_params - read VPD parameters from VPD EEPROM 2739 * @adapter: adapter to read 2740 * @p: where to store the parameters 2741 * 2742 * Reads card parameters stored in VPD EEPROM. 2743 */ 2744 int t4_get_raw_vpd_params(struct adapter *adapter, struct vpd_params *p) 2745 { 2746 unsigned int id_len, pn_len, sn_len, na_len; 2747 int sn, pn, na, addr, ret = 0; 2748 u8 *vpd, base_val = 0; 2749 2750 vpd = vmalloc(VPD_LEN); 2751 if (!vpd) 2752 return -ENOMEM; 2753 2754 /* Card information normally starts at VPD_BASE but early cards had 2755 * it at 0. 2756 */ 2757 ret = pci_read_vpd(adapter->pdev, VPD_BASE, 1, &base_val); 2758 if (ret < 0) 2759 goto out; 2760 2761 addr = base_val == PCI_VPD_LRDT_ID_STRING ? VPD_BASE : VPD_BASE_OLD; 2762 2763 ret = pci_read_vpd(adapter->pdev, addr, VPD_LEN, vpd); 2764 if (ret < 0) 2765 goto out; 2766 2767 if (vpd[0] != PCI_VPD_LRDT_ID_STRING) { 2768 dev_err(adapter->pdev_dev, "missing VPD ID string\n"); 2769 ret = -EINVAL; 2770 goto out; 2771 } 2772 2773 id_len = pci_vpd_lrdt_size(vpd); 2774 2775 ret = pci_vpd_check_csum(vpd, VPD_LEN); 2776 if (ret) { 2777 dev_err(adapter->pdev_dev, "VPD checksum incorrect or missing\n"); 2778 ret = -EINVAL; 2779 goto out; 2780 } 2781 2783 PCI_VPD_RO_KEYWORD_SERIALNO, &sn_len); 2784 if (ret < 0) 2785 goto out; 2786 sn = ret; 2787 2788 ret = pci_vpd_find_ro_info_keyword(vpd, VPD_LEN, 2789 PCI_VPD_RO_KEYWORD_PARTNO, &pn_len); 2790 if (ret < 0) 2791 goto out; 2792 pn = ret; 2793 2794 ret = pci_vpd_find_ro_info_keyword(vpd, VPD_LEN, "NA", &na_len); 2795 if (ret < 0) 2796 goto out; 2797 na = ret; 2798 2799 memcpy(p->id, vpd + PCI_VPD_LRDT_TAG_SIZE, min_t(int, id_len, ID_LEN)); 2800 strim(p->id); 2801 memcpy(p->sn, vpd + sn, min_t(int, sn_len, SERNUM_LEN)); 2802 strim(p->sn); 2803 memcpy(p->pn, vpd + pn, min_t(int, pn_len, PN_LEN)); 2804 strim(p->pn); 2805 memcpy(p->na, vpd + na, min_t(int, na_len, MACADDR_LEN)); 2806 strim((char *)p->na); 2807 2808 out: 2809 vfree(vpd); 2810 if (ret < 0) { 2811 dev_err(adapter->pdev_dev, "error reading VPD\n"); 2812 return ret; 2813 } 2814 2815 return 0; 2816 } 2817 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org