The report from Intel's test robot is a false positive. On Sun. 15 Nov. 2020 at 03:12, kernel test robot wrote: Patch is applied to the wrong git tree. It is based on the testing branch of linux-can-next: https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git/lo... I did so (c.f. the base-commit and prerequisite-patch-id tags at the bottom of the patch). While the base-commit was taken into account, the prerequisite-patch-id tags seem to have been ignored. FYI, I used the below command to generate the patch. git format-patch --base=bff6f1db91e330d7fba56f815cdbc412c75fe163 -v6 -o patch/v6 HEAD~1 Yours sincerely, Vincent Mailhol > url: https://github.com/0day-ci/linux/commits/Vincent-Mailhol/can-usb-etas_es5... > base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f01c30de86f1047e9bae1b1b1417b0ce8dcd15b1 > config: x86_64-randconfig-a005-20201115 (attached as .config) > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 9a85643cd357e412cff69067bb5c4840e228c2ab) > 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 x86_64 cross compiling tool for clang build > # apt-get install binutils-x86-64-linux-gnu > # https://github.com/0day-ci/linux/commit/80a9b72580bad04e879752fa5c54d278b... > git remote add linux-review https://github.com/0day-ci/linux > git fetch --no-tags linux-review Vincent-Mailhol/can-usb-etas_es58X-add-support-for-ETAS-ES58X-CAN-USB-interfaces/20201114-232854 > git checkout 80a9b72580bad04e879752fa5c54d278b486e2bb > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 > > 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/can/usb/etas_es58x/es58x_core.c:745:12: error: use of undeclared identifier 'CAN_MAX_RAW_DLC' > if (dlc > CAN_MAX_RAW_DLC) { > ^ > drivers/net/can/usb/etas_es58x/es58x_core.c:748:22: error: use of undeclared identifier 'CAN_MAX_RAW_DLC' > __func__, dlc, CAN_MAX_RAW_DLC); > ^ > >> drivers/net/can/usb/etas_es58x/es58x_core.c:753:9: error: implicit declaration of function 'can_fd_dlc2len' [-Werror,-Wimplicit-function-declaration] > len = can_fd_dlc2len(dlc); > ^ > drivers/net/can/usb/etas_es58x/es58x_core.c:753:9: note: did you mean 'can_dlc2len'? > include/linux/can/dev.h:190:4: note: 'can_dlc2len' declared here > u8 can_dlc2len(u8 can_dlc); > ^ > >> drivers/net/can/usb/etas_es58x/es58x_core.c:756:9: error: implicit declaration of function 'can_cc_dlc2len' [-Werror,-Wimplicit-function-declaration] > len = can_cc_dlc2len(dlc); > ^ > drivers/net/can/usb/etas_es58x/es58x_core.c:756:9: note: did you mean 'can_dlc2len'? > include/linux/can/dev.h:190:4: note: 'can_dlc2len' declared here > u8 can_dlc2len(u8 can_dlc); > ^ > >> drivers/net/can/usb/etas_es58x/es58x_core.c:775:3: error: implicit declaration of function 'can_frame_set_cc_len' [-Werror,-Wimplicit-function-declaration] > can_frame_set_cc_len(ccf, dlc, es58x_priv(netdev)->can.ctrlmode); > ^ > 5 errors generated. > -- > >> drivers/net/can/usb/etas_es58x/es581_4.c:385:20: error: implicit declaration of function 'can_get_cc_dlc' [-Werror,-Wimplicit-function-declaration] > tx_can_msg->dlc = can_get_cc_dlc(cf, priv->can.ctrlmode); > ^ > >> drivers/net/can/usb/etas_es58x/es581_4.c:387:41: error: no member named 'len' in 'struct can_frame' > memcpy(tx_can_msg->data, cf->data, cf->len); > ~~ ^ > >> drivers/net/can/usb/etas_es58x/es581_4.c:391:13: error: implicit declaration of function 'can_cc_dlc2len' [-Werror,-Wimplicit-function-declaration] > msg_len += es581_4_sizeof_rx_tx_msg(*tx_can_msg); > ^ > drivers/net/can/usb/etas_es58x/es581_4.c:30:29: note: expanded from macro 'es581_4_sizeof_rx_tx_msg' > offsetof(typeof(msg), data[can_cc_dlc2len((msg).dlc)]) > ^ > drivers/net/can/usb/etas_es58x/es581_4.c:391:13: note: did you mean 'can_dlc2len'? > drivers/net/can/usb/etas_es58x/es581_4.c:30:29: note: expanded from macro 'es581_4_sizeof_rx_tx_msg' > offsetof(typeof(msg), data[can_cc_dlc2len((msg).dlc)]) > ^ > include/linux/can/dev.h:190:4: note: 'can_dlc2len' declared here > u8 can_dlc2len(u8 can_dlc); > ^ > >> drivers/net/can/usb/etas_es58x/es581_4.c:515:48: error: use of undeclared identifier 'CAN_CTRLMODE_CC_LEN8_DLC' > .ctrlmode_supported = CAN_CTRLMODE_LOOPBACK | CAN_CTRLMODE_CC_LEN8_DLC, > ^ > 4 errors generated. > -- > >> drivers/net/can/usb/etas_es58x/es58x_fd.c:119:24: error: implicit declaration of function 'can_cc_dlc2len' [-Werror,-Wimplicit-function-declaration] > u16 rx_can_msg_len = es58x_fd_sizeof_rx_tx_msg(*rx_can_msg); > ^ > drivers/net/can/usb/etas_es58x/es58x_fd.c:36:3: note: expanded from macro 'es58x_fd_sizeof_rx_tx_msg' > can_cc_dlc2len(__msg.dlc); \ > ^ > drivers/net/can/usb/etas_es58x/es58x_fd.c:119:24: note: did you mean 'can_dlc2len'? > drivers/net/can/usb/etas_es58x/es58x_fd.c:36:3: note: expanded from macro 'es58x_fd_sizeof_rx_tx_msg' > can_cc_dlc2len(__msg.dlc); \ > ^ > include/linux/can/dev.h:190:4: note: 'can_dlc2len' declared here > u8 can_dlc2len(u8 can_dlc); > ^ > >> drivers/net/can/usb/etas_es58x/es58x_fd.c:141:11: error: implicit declaration of function 'can_fd_len2dlc' [-Werror,-Wimplicit-function-declaration] > dlc = can_fd_len2dlc(rx_can_msg->len); > ^ > drivers/net/can/usb/etas_es58x/es58x_fd.c:141:11: note: did you mean 'can_len2dlc'? > include/linux/can/dev.h:193:4: note: 'can_len2dlc' declared here > u8 can_len2dlc(u8 len); > ^ > >> drivers/net/can/usb/etas_es58x/es58x_fd.c:371:25: error: no member named 'len' in 'struct can_frame' > tx_can_msg->len = cf->len; > ~~ ^ > >> drivers/net/can/usb/etas_es58x/es58x_fd.c:373:21: error: implicit declaration of function 'can_get_cc_dlc' [-Werror,-Wimplicit-function-declaration] > tx_can_msg->dlc = can_get_cc_dlc(cf, priv->can.ctrlmode); > ^ > drivers/net/can/usb/etas_es58x/es58x_fd.c:374:41: error: no member named 'len' in 'struct can_frame' > memcpy(tx_can_msg->data, cf->data, cf->len); > ~~ ^ > drivers/net/can/usb/etas_es58x/es58x_fd.c:377:13: error: implicit declaration of function 'can_cc_dlc2len' [-Werror,-Wimplicit-function-declaration] > msg_len += es58x_fd_sizeof_rx_tx_msg(*tx_can_msg); > ^ > drivers/net/can/usb/etas_es58x/es58x_fd.c:36:3: note: expanded from macro 'es58x_fd_sizeof_rx_tx_msg' > can_cc_dlc2len(__msg.dlc); \ > ^ > >> drivers/net/can/usb/etas_es58x/es58x_fd.c:617:6: error: use of undeclared identifier 'CAN_CTRLMODE_CC_LEN8_DLC' > CAN_CTRLMODE_CC_LEN8_DLC, > ^ > 7 errors generated. > > vim +/CAN_MAX_RAW_DLC +745 drivers/net/can/usb/etas_es58x/es58x_core.c > > 718 > 719 /** > 720 * es58x_rx_can_msg() - Handle a received a CAN message. > 721 * @netdev: CAN network device. > 722 * @timestamp: Hardware time stamp (only relevant in rx branches). > 723 * @data: CAN payload. > 724 * @can_id: CAN ID. > 725 * @es58x_flags: Please refer to enum es58x_flag. > 726 * @dlc: Data Length Code (raw value). > 727 * > 728 * Fill up a CAN skb and post it. > 729 * > 730 * This function handles the case where the DLC of a classical CAN > 731 * frame is greater than CAN_MAX_DLEN (c.f. the len8_dlc field of > 732 * struct can_frame). > 733 * > 734 * Return: zero on success. > 735 */ > 736 int es58x_rx_can_msg(struct net_device *netdev, u64 timestamp, const u8 *data, > 737 canid_t can_id, enum es58x_flag es58x_flags, u8 dlc) > 738 { > 739 struct canfd_frame *cfd; > 740 struct can_frame *ccf; > 741 struct sk_buff *skb; > 742 u8 len; > 743 bool is_can_fd = !!(es58x_flags & ES58X_FLAG_FD_DATA); > 744 > > 745 if (dlc > CAN_MAX_RAW_DLC) { > 746 netdev_err(netdev, > 747 "%s: DLC is %d but maximum should be %d\n", > 748 __func__, dlc, CAN_MAX_RAW_DLC); > 749 return -EMSGSIZE; > 750 } > 751 > 752 if (is_can_fd) { > > 753 len = can_fd_dlc2len(dlc); > 754 skb = alloc_canfd_skb(netdev, &cfd); > 755 } else { > > 756 len = can_cc_dlc2len(dlc); > 757 skb = alloc_can_skb(netdev, &ccf); > 758 cfd = (struct canfd_frame *)ccf; > 759 } > 760 > 761 if (!skb) { > 762 netdev->stats.rx_dropped++; > 763 return -ENOMEM; > 764 } > 765 cfd->can_id = can_id; > 766 if (es58x_flags & ES58X_FLAG_EFF) > 767 cfd->can_id |= CAN_EFF_FLAG; > 768 if (is_can_fd) { > 769 cfd->len = len; > 770 if (es58x_flags & ES58X_FLAG_FD_BRS) > 771 cfd->flags |= CANFD_BRS; > 772 if (es58x_flags & ES58X_FLAG_FD_ESI) > 773 cfd->flags |= CANFD_ESI; > 774 } else { > > 775 can_frame_set_cc_len(ccf, dlc, es58x_priv(netdev)->can.ctrlmode); > 776 if (es58x_flags & ES58X_FLAG_RTR) { > 777 ccf->can_id |= CAN_RTR_FLAG; > 778 len = 0; > 779 } > 780 } > 781 memcpy(cfd->data, data, len); > 782 netdev->stats.rx_packets++; > 783 netdev->stats.rx_bytes += len; > 784 > 785 es58x_set_skb_timestamp(netdev, skb, timestamp); > 786 netif_rx(skb); > 787 > 788 es58x_priv(netdev)->err_passive_before_rtx_success = 0; > 789 > 790 return 0; > 791 } > 792 > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org