Hi Kiran, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bluetooth-next/master] [also build test WARNING on bluetooth/master v5.13-rc5 next-20210608] [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/Kiran-K/Bluetooth-enumerate-loca... base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master config: mips-randconfig-s032-20210608 (attached as .config) compiler: mipsel-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/0day-ci/linux/commit/38ec55e0fc2fabf67d0b5f151700afae1... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kiran-K/Bluetooth-enumerate-local-supported-codec-and-cache-details/20210608-202239 git checkout 38ec55e0fc2fabf67d0b5f151700afae12db44f7 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition net/bluetooth/hci_core.c: note: in included file: include/net/bluetooth/hci_core.h:142:35: sparse: sparse: array of flexible structures net/bluetooth/hci_core.c:920:28: sparse: expected restricted __le16 [usertype] cid net/bluetooth/hci_core.c:920:28: sparse: got unsigned short [usertype] net/bluetooth/hci_core.c:921:28: sparse: expected restricted __le16 [usertype] vid net/bluetooth/hci_core.c:921:28: sparse: got unsigned short [usertype] vim +920 net/bluetooth/hci_core.c 905 906 static int hci_codec_list_add(struct list_head *list, 907 struct hci_op_read_local_codec_caps *sent, 908 struct hci_rp_read_local_codec_caps *rp, 909 void *caps, 910 __u32 len) 911 { 912 struct codec_list *entry; 913 914 entry = kzalloc(sizeof(*entry) + len, GFP_KERNEL); 915 if (!entry) 916 return -ENOMEM; 917 918 entry->id = sent->id; 919 if (sent->id == 0xFF) { 922 } 923 entry->transport = sent->transport; 924 entry->len = len; 925 entry->num_caps = rp->num_caps; 926 if (rp->num_caps) 927 memcpy(entry->caps, caps, len); 928 list_add(&entry->list, list); 929 930 return 0; 931 } 932 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org