Hi Luiz, I love your patch! Perhaps something to improve: [auto build test WARNING on bluetooth-next/master] [also build test WARNING on next-20211207] [cannot apply to bluetooth/master v5.16-rc4] [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] url: https://github.com/0day-ci/linux/commits/Luiz-Augusto-von-Dentz/Bluetooth... base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master config: arc-buildonly-randconfig-r002-20211207 (https://download.01.org/0day-ci/archive/20211208/202112081458.7Shk6qTD-lk...) compiler: arceb-elf-gcc (GCC) 11.2.0 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 # https://github.com/0day-ci/linux/commit/edb4c612dda2cb67f35cfe5a1c3bd0b38... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Luiz-Augusto-von-Dentz/Bluetooth-hci_sync-Add-hci_le_create_conn_sync/20211208-100714 git checkout edb4c612dda2cb67f35cfe5a1c3bd0b38918aa80 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash net/bluetooth/ 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 >>): 5120 | int hci_le_ext_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/hci_le_ext_create_conn_sync +5120 net/bluetooth/hci_sync.c 5119 5121 u8 own_addr_type) 5122 { 5123 struct hci_cp_le_ext_create_conn *cp; 5124 struct hci_cp_le_ext_conn_param *p; 5125 u8 data[sizeof(*cp) + sizeof(*p) * 3]; 5126 u32 plen; 5127 5128 cp = (void *) data; 5129 p = (void *) cp->data; 5130 5131 memset(cp, 0, sizeof(*cp)); 5132 5133 bacpy(&cp->peer_addr, &conn->dst); 5134 cp->peer_addr_type = conn->dst_type; 5135 cp->own_addr_type = own_addr_type; 5136 5137 plen = sizeof(*cp); 5138 5139 if (scan_1m(hdev)) { 5140 cp->phys |= LE_SCAN_PHY_1M; 5141 set_ext_conn_params(conn, p); 5142 5143 p++; 5144 plen += sizeof(*p); 5145 } 5146 5147 if (scan_2m(hdev)) { 5148 cp->phys |= LE_SCAN_PHY_2M; 5149 set_ext_conn_params(conn, p); 5150 5151 p++; 5152 plen += sizeof(*p); 5153 } 5154 5155 if (scan_coded(hdev)) { 5156 cp->phys |= LE_SCAN_PHY_CODED; 5157 set_ext_conn_params(conn, p); 5158 5159 plen += sizeof(*p); 5160 } 5161 5162 return __hci_cmd_sync_status(hdev, HCI_OP_LE_EXT_CREATE_CONN, 5163 plen, data, HCI_CMD_TIMEOUT); 5164 } 5165 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org