Hi Marek, I love your patch! Perhaps something to improve: [auto build test WARNING on drm/drm-next] [also build test WARNING on drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next v5.16 next-20220114] [cannot apply to drm-tip/drm-tip airlied/drm-next] [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/Marek-Vasut/drm-bridge-icn6211-F... base: git://anongit.freedesktop.org/drm/drm drm-next config: h8300-buildonly-randconfig-r001-20220113 (https://download.01.org/0day-ci/archive/20220114/202201141818.0EmBjuCm-lk...) compiler: h8300-linux-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/730ece8a3c97460eaf81603bc246cd631... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Marek-Vasut/drm-bridge-icn6211-Fix-register-layout/20220114-115112 git checkout 730ece8a3c97460eaf81603bc246cd631d1f7461 # 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=h8300 SHELL=/bin/bash drivers/gpu/drm/bridge/ 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 >>): drivers/gpu/drm/bridge/chipone-icn6211.c: In function 'chipone_attach': 454 | struct drm_bridge *abridge = bridge; | ^~~~~~~ vim +/abridge +454 drivers/gpu/drm/bridge/chipone-icn6211.c 450 451 static int chipone_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) 452 { 453 struct chipone *icn = bridge_to_chipone(bridge); 455 int ret; 456 457 if (icn->interface_i2c) { 458 ret = chipone_dsi_setup(icn); 459 if (ret) 460 return ret; 461 462 abridge = &icn->bridge; 463 } 464 465 return drm_bridge_attach(bridge->encoder, icn->panel_bridge, 466 bridge, flags); 467 } 468 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org