Hi Daniel, [auto build test ERROR on next-20170330] [cannot apply to drm/drm-next drm-intel/for-linux-next robclark/msm-next v4.9-rc8 v4.9-rc7 v4.9-rc6 v4.11-rc5] [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:158:2: error: implicit declaration of function 'drm_modeset_unlock_crtc' [-Werror=implicit-function-declaration] drm_modeset_unlock_crtc(crtc); ^~~~~~~~~~~~~~~~~~~~~~~ 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_unlock_crtc +158 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c bfb89928 Daniel Vetter 2012-12-02 152 * FIXME: Unclear whether there's any global state touched by the bfb89928 Daniel Vetter 2012-12-02 153 * cursor_set function, especially vmw_cursor_update_position looks bfb89928 Daniel Vetter 2012-12-02 154 * suspicious. For now take the easy route and reacquire all locks. We bfb89928 Daniel Vetter 2012-12-02 155 * can do this since the caller in the drm core doesn't check anything bfb89928 Daniel Vetter 2012-12-02 156 * which is protected by any looks. bfb89928 Daniel Vetter 2012-12-02 157 */ 21e88620 Rob Clark 2014-10-30 @158 drm_modeset_unlock_crtc(crtc); bfb89928 Daniel Vetter 2012-12-02 159 drm_modeset_lock_all(dev_priv->dev); 8fbf9d92 Thomas Hellstrom 2015-11-26 160 hotspot_x = hot_x + du->hotspot_x; 8fbf9d92 Thomas Hellstrom 2015-11-26 161 hotspot_y = hot_y + du->hotspot_y; :::::: The code at line 158 was first introduced by commit :::::: 21e88620aa21b48d4f62d29275e3e2944a5ea2b5 drm/vmwgfx: fix lock breakage :::::: TO: Rob Clark :::::: CC: Thomas Hellstrom --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation