Drm-tip rebuild created this function duplication in some merge resolution... not sure where that came from or started... But Lucas had warned me yesterday morning... So, yesterday night I added a fix-up on drm-rerere that remove the duplication on drm-tip... and that should be fixed by now I think... Could you please fetch and recheck?! On Dec 30, 2017, at 9:10 AM, Wu, Fengguang > wrote: tree: git://anongit.freedesktop.org/drm/drm-tip drm-tip head: 16432d39f2cbdc7a8798df3ebb4f7c882fb23132 commit: a79b622ef5cad1b3a868a1d7250494e39bb04c05 [1/7] Merge remote-tracking branch 'airlied/drm-next' into drm-tip config: i386-randconfig-b0-12302345 (attached as .config) compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4 reproduce: git checkout a79b622ef5cad1b3a868a1d7250494e39bb04c05 # save the attached .config to linux build tree make ARCH=i386 Note: the drm-tip/drm-tip HEAD 16432d39f2cbdc7a8798df3ebb4f7c882fb23132 builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>): drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_mst_types.c:219:6: error: redefinition of 'dm_dp_mst_dc_sink_create' void dm_dp_mst_dc_sink_create(struct drm_connector *connector) ^ drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_mst_types.c:183:6: note: previous definition of 'dm_dp_mst_dc_sink_create' was here void dm_dp_mst_dc_sink_create(struct drm_connector *connector) ^ vim +/dm_dp_mst_dc_sink_create +219 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_mst_types.c 54427651 Jerry Zuo 2017-09-20 218 becd0875 Jerry (Fangzhi Zuo 2017-12-01 @219) void dm_dp_mst_dc_sink_create(struct drm_connector *connector) becd0875 Jerry (Fangzhi Zuo 2017-12-01 220) { becd0875 Jerry (Fangzhi Zuo 2017-12-01 221) struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); becd0875 Jerry (Fangzhi Zuo 2017-12-01 222) struct edid *edid; becd0875 Jerry (Fangzhi Zuo 2017-12-01 223) struct dc_sink *dc_sink; becd0875 Jerry (Fangzhi Zuo 2017-12-01 224) struct dc_sink_init_data init_params = { becd0875 Jerry (Fangzhi Zuo 2017-12-01 225) .link = aconnector->dc_link, becd0875 Jerry (Fangzhi Zuo 2017-12-01 226) .sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST }; becd0875 Jerry (Fangzhi Zuo 2017-12-01 227) becd0875 Jerry (Fangzhi Zuo 2017-12-01 228) edid = drm_dp_mst_get_edid(connector, &aconnector->mst_port->mst_mgr, aconnector->port); becd0875 Jerry (Fangzhi Zuo 2017-12-01 229) becd0875 Jerry (Fangzhi Zuo 2017-12-01 230) if (!edid) { becd0875 Jerry (Fangzhi Zuo 2017-12-01 231) drm_mode_connector_update_edid_property( becd0875 Jerry (Fangzhi Zuo 2017-12-01 232) &aconnector->base, becd0875 Jerry (Fangzhi Zuo 2017-12-01 233) NULL); becd0875 Jerry (Fangzhi Zuo 2017-12-01 234) return; becd0875 Jerry (Fangzhi Zuo 2017-12-01 235) } becd0875 Jerry (Fangzhi Zuo 2017-12-01 236) becd0875 Jerry (Fangzhi Zuo 2017-12-01 237) aconnector->edid = edid; becd0875 Jerry (Fangzhi Zuo 2017-12-01 238) becd0875 Jerry (Fangzhi Zuo 2017-12-01 239) dc_sink = dc_link_add_remote_sink( becd0875 Jerry (Fangzhi Zuo 2017-12-01 240) aconnector->dc_link, becd0875 Jerry (Fangzhi Zuo 2017-12-01 241) (uint8_t *)aconnector->edid, becd0875 Jerry (Fangzhi Zuo 2017-12-01 242) (aconnector->edid->extensions + 1) * EDID_LENGTH, becd0875 Jerry (Fangzhi Zuo 2017-12-01 243) &init_params); becd0875 Jerry (Fangzhi Zuo 2017-12-01 244) becd0875 Jerry (Fangzhi Zuo 2017-12-01 245) dc_sink->priv = aconnector; becd0875 Jerry (Fangzhi Zuo 2017-12-01 246) aconnector->dc_sink = dc_sink; becd0875 Jerry (Fangzhi Zuo 2017-12-01 247) becd0875 Jerry (Fangzhi Zuo 2017-12-01 248) amdgpu_dm_add_sink_to_freesync_module( becd0875 Jerry (Fangzhi Zuo 2017-12-01 249) connector, aconnector->edid); becd0875 Jerry (Fangzhi Zuo 2017-12-01 250) becd0875 Jerry (Fangzhi Zuo 2017-12-01 251) drm_mode_connector_update_edid_property( becd0875 Jerry (Fangzhi Zuo 2017-12-01 252) &aconnector->base, aconnector->edid); becd0875 Jerry (Fangzhi Zuo 2017-12-01 253) } becd0875 Jerry (Fangzhi Zuo 2017-12-01 254) :::::: The code at line 219 was first introduced by commit :::::: becd0875f4393a992afbf57aa323f7bf1a71c3ff drm/amd/display: Fix rehook MST display not light back on :::::: TO: Jerry (Fangzhi) Zuo > :::::: CC: Alex Deucher > --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation <.config.gz>