Hi Hilda, kernel test robot noticed the following build errors: [auto build test ERROR on bluetooth/master] [also build test ERROR on bluetooth-next/master linus/master v6.15 next-20250529] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Hilda-Wu/Bluetooth-btrtl-Firmware-format-v3-support/20250529-205020 base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git master patch link: https://lore.kernel.org/r/20250529124816.4186320-2-hildawu%40realtek.com patch subject: [PATCH 1/2] Bluetooth: btrtl: Firmware format v3 support config: arm-randconfig-004-20250530 (https://download.01.org/0day-ci/archive/20250530/202505300705.KsxzVLt6-lkp@xxxxxxxxx/config) compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250530/202505300705.KsxzVLt6-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202505300705.KsxzVLt6-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/bluetooth/btusb.c:2707:10: error: call to undeclared function 'btrtl_recv_event'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 2707 | return btrtl_recv_event(hdev, skb); | ^ 1 error generated. vim +/btrtl_recv_event +2707 drivers/bluetooth/btusb.c 2689 2690 static int btusb_recv_event_realtek(struct hci_dev *hdev, struct sk_buff *skb) 2691 { 2692 if (skb->data[0] == HCI_VENDOR_PKT && skb->data[2] == RTK_SUB_EVENT_CODE_COREDUMP) { 2693 struct rtk_dev_coredump_hdr hdr = { 2694 .code = RTK_DEVCOREDUMP_CODE_MEMDUMP, 2695 }; 2696 2697 bt_dev_dbg(hdev, "RTL: received coredump vendor evt, len %u", 2698 skb->len); 2699 2700 btusb_rtl_alloc_devcoredump(hdev, &hdr, skb->data, skb->len); 2701 kfree_skb(skb); 2702 2703 return 0; 2704 } 2705 2706 if (skb->data[0] == HCI_VENDOR_PKT) > 2707 return btrtl_recv_event(hdev, skb); 2708 2709 return hci_recv_frame(hdev, skb); 2710 } 2711 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
