Hi Thomas, I love your patch! Yet something to improve: [auto build test ERROR on next-20200915] [cannot apply to drm-intel/for-linux-next arm/drm-armada-devel linus/master arm/drm-armada-fixes anholt/for-next v5.9-rc5 v5.9-rc4 v5.9-rc3 v5.9-rc5] [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/Thomas-Zimmermann/Convert-all-re... base: 6b02addb1d1748d21dd1261e46029b264be4e5a0 config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa 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 >>): 304 | .vm_ops = &drm_gem_cma_vm_ops, | ^~~~~~~~~~~~~~~~~~ | drm_gem_mmap_obj # https://github.com/0day-ci/linux/commit/9516e471a1e5d73a108c0568243987a03... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Thomas-Zimmermann/Convert-all-remaining-drivers-to-GEM-object-functions/20200915-230157 git checkout 9516e471a1e5d73a108c0568243987a032c2e9e3 vim +304 drivers/gpu/drm/rockchip/rockchip_drm_gem.c 298 299 static const struct drm_gem_object_funcs rockchip_gem_object_funcs = { 300 .free = rockchip_gem_free_object, 301 .get_sg_table = rockchip_gem_prime_get_sg_table, 302 .vmap = rockchip_gem_prime_vmap, 303 .vunmap = rockchip_gem_prime_vunmap, 305 }; 306 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org