Hi Maxime, I love your patch! Perhaps something to improve: [auto build test WARNING on drm-tip/drm-tip] [also build test WARNING on linus/master v5.19-rc5 next-20220708] [cannot apply to drm-misc/drm-misc-next drm-intel/for-linux-next anholt/for-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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Maxime-Ripard/drm-vc4-Fix-hotplug-for-vc4/20220708-181702 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: i386-defconfig (https://download.01.org/0day-ci/archive/20220708/202207082243.30UtKZMS-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/02fc9586cd9ab6a11b41230834118acd02445e31 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Maxime-Ripard/drm-vc4-Fix-hotplug-for-vc4/20220708-181702 git checkout 02fc9586cd9ab6a11b41230834118acd02445e31 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/gpu/drm/drm_encoder.c: In function '__drmm_encoder_init': >> drivers/gpu/drm/drm_encoder.c:228:9: warning: function '__drmm_encoder_init' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 228 | ret = __drm_encoder_init(dev, encoder, funcs, encoder_type, name, args); | ^~~ vim +228 drivers/gpu/drm/drm_encoder.c 215 216 static int __drmm_encoder_init(struct drm_device *dev, 217 struct drm_encoder *encoder, 218 const struct drm_encoder_funcs *funcs, 219 int encoder_type, 220 const char *name, 221 va_list args) 222 { 223 int ret; 224 225 if (drm_WARN_ON(dev, funcs && funcs->destroy)) 226 return -EINVAL; 227 > 228 ret = __drm_encoder_init(dev, encoder, funcs, encoder_type, name, args); 229 if (ret) 230 return ret; 231 232 ret = drmm_add_action_or_reset(dev, drmm_encoder_alloc_release, encoder); 233 if (ret) 234 return ret; 235 236 return 0; 237 } 238 -- 0-DAY CI Kernel Test Service https://01.org/lkp