Hi Daniel, [auto build test ERROR on next-20170330] [also build test ERROR on v4.11-rc5] [cannot apply to drm/drm-next drm-intel/for-linux-next robclark/msm-next v4.9-rc8 v4.9-rc7 v4.9-rc6] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Daniel-Vetter/acquire-ctx-wire-up-part-2/20170404-053514 config: i386-randconfig-x010-201714 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): drivers/gpu//drm/vmwgfx/vmwgfx_kms.c: In function 'vmw_du_crtc_cursor_set2': >> drivers/gpu//drm/vmwgfx/vmwgfx_kms.c:228:2: error: implicit declaration of function 'drm_modeset_lock_crtc' [-Werror=implicit-function-declaration] drm_modeset_lock_crtc(crtc, crtc->cursor); ^~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/drm_modeset_lock_crtc +228 drivers/gpu//drm/vmwgfx/vmwgfx_kms.c 8fbf9d92 Thomas Hellstrom 2015-11-26 222 du->core_hotspot_x = hot_x; 8fbf9d92 Thomas Hellstrom 2015-11-26 223 du->core_hotspot_y = hot_y; 8fbf9d92 Thomas Hellstrom 2015-11-26 224 } fb1d9738 Jakob Bornecrantz 2009-12-10 225 bfb89928 Daniel Vetter 2012-12-02 226 out: bfb89928 Daniel Vetter 2012-12-02 227 drm_modeset_unlock_all(dev_priv->dev); 4d02e2de Daniel Vetter 2014-11-11 @228 drm_modeset_lock_crtc(crtc, crtc->cursor); bfb89928 Daniel Vetter 2012-12-02 229 bfb89928 Daniel Vetter 2012-12-02 230 return ret; fb1d9738 Jakob Bornecrantz 2009-12-10 231 } :::::: The code at line 228 was first introduced by commit :::::: 4d02e2de0e80a786452e70d7f3a20a50641e6620 drm: Per-plane locking :::::: TO: Daniel Vetter :::::: CC: Dave Airlie --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation