Hi Daniel, [auto build test ERROR on drm/drm-next -- if it's inappropriate base, please suggest rules for selecting the more suitable base] url: https://github.com/0day-ci/linux/commits/Daniel-Vetter/drm-Update-GEM-refcounting-docs/20151023-011317 config: i386-randconfig-s1-201542 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): drivers/gpu/drm/vgem/vgem_drv.c: In function 'vgem_gem_dumb_map': >> drivers/gpu/drm/vgem/vgem_drv.c:211:7: error: implicit declaration of function 'drm_vma_node_has_offset' [-Werror=implicit-function-declaration] if (!drm_vma_node_has_offset(&obj->vma_node)) { ^ cc1: some warnings being treated as errors vim +/drm_vma_node_has_offset +211 drivers/gpu/drm/vgem/vgem_drv.c 502e95c6 Zach Reizner 2015-03-04 205 obj = drm_gem_object_lookup(dev, file, handle); 502e95c6 Zach Reizner 2015-03-04 206 if (!obj) { 502e95c6 Zach Reizner 2015-03-04 207 ret = -ENOENT; 502e95c6 Zach Reizner 2015-03-04 208 goto unlock; 502e95c6 Zach Reizner 2015-03-04 209 } 502e95c6 Zach Reizner 2015-03-04 210 502e95c6 Zach Reizner 2015-03-04 @211 if (!drm_vma_node_has_offset(&obj->vma_node)) { 502e95c6 Zach Reizner 2015-03-04 212 ret = drm_gem_create_mmap_offset(obj); 502e95c6 Zach Reizner 2015-03-04 213 if (ret) 502e95c6 Zach Reizner 2015-03-04 214 goto unref; :::::: The code at line 211 was first introduced by commit :::::: 502e95c6678505474f1056480310cd9382bacbac drm/vgem: implement virtual GEM :::::: TO: Zach Reizner :::::: CC: Dave Airlie --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation