Hi Daniel, I love your patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master v5.7 next-20200612] [cannot apply to drm/drm-next] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Daniel-Vetter/drm-atomic-helper-... base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3b43f006294971b8049d4807110032169780e5b8) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): __drm_atomic_helper_crtc_reset(crtc, &state->base); ^ 1 error generated. vim +/state +632 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c 604 605 606 /** 607 * vmw_du_crtc_reset - creates a blank vmw crtc state 608 * @crtc: DRM crtc 609 * 610 * Resets the atomic state for @crtc by freeing the state pointer (which 611 * might be NULL, e.g. at driver load time) and allocating a new empty state 612 * object. 613 */ 614 void vmw_du_crtc_reset(struct drm_crtc *crtc) 615 { 616 struct vmw_crtc_state *vcs; 617 618 619 if (crtc->state) { 620 __drm_atomic_helper_crtc_destroy_state(crtc->state); 621 622 kfree(vmw_crtc_state_to_vcs(crtc->state)); 623 } 624 625 vcs = kzalloc(sizeof(*vcs), GFP_KERNEL); 626 627 if (!vcs) { 628 DRM_ERROR("Cannot allocate vmw_crtc_state\n"); 629 return; 630 } 631 633 } 634 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org