tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 362f533a2a1098fe95020cb59340023e9b11d062 commit: 0a6509b0926dea5ebbd2c86551b7681b00585961 platform/x86: Add Asus TF103C dock driver date: 8 days ago config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220113/202201131019.hPdr89Fv-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 0a6509b0926dea5ebbd2c86551b7681b00585961 # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/platform/x86/ 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 >>) vim +/tf103c_dock_hid_ll_driver +253 drivers/platform/x86/asus-tf103c-dock.c 252 254 .parse = tf103c_dock_hid_parse, 255 .start = tf103c_dock_hid_start, 256 .stop = tf103c_dock_hid_stop, 257 .open = tf103c_dock_hid_open, 258 .close = tf103c_dock_hid_close, 259 .raw_request = tf103c_dock_hid_raw_request, 260 }; 261 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org