Hi Lee, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on drm-tip/drm-tip v5.14-rc2 next-20210723] [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/Lee-Shawn-C/MIPI-DSI-driver-enha... base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-s031-20210723 (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/0day-ci/linux/commit/3c3b297d0e553591be7fb6d5b66bb41cf... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Lee-Shawn-C/MIPI-DSI-driver-enhancements/20210723-150019 git checkout 3c3b297d0e553591be7fb6d5b66bb41cf23bff42 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 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 >>) drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c:69:20: sparse: expected unsigned short [usertype] data drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c:69:20: sparse: got restricted __be16 [usertype] vim +69 drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.c 64 65 static void dcs_set_backlight(const struct drm_connector_state *conn_state, u32 level) 66 { 67 struct intel_dsi *intel_dsi = enc_to_intel_dsi(to_intel_encoder(conn_state->best_encoder)); 68 struct mipi_dsi_device *dsi_device; 70 enum port port; 71 72 for_each_dsi_port(port, intel_dsi->dcs_backlight_ports) { 73 dsi_device = intel_dsi->dsi_hosts[port]->device; 74 mipi_dsi_dcs_write(dsi_device, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 75 &data, sizeof(data)); 76 } 77 } 78 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org