Hi, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 107df03203bb66de56e2caec3bde6d22b55480c5 commit: 0a793ad34f137f146119ec4a4a90694ccab77ea3 drm/i915: Force clean compilation with -Werror date: 3 months ago config: x86_64-randconfig-v0-07240812 (attached as .config) compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7 reproduce: git checkout 0a793ad34f137f146119ec4a4a90694ccab77ea3 # save the attached .config to linux build tree make ARCH=x86_64 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All errors (new ones prefixed by >>): cc1: warnings being treated as errors drivers/gpu/drm/i915/i915_guc_submission.c: In function 'i915_guc_submit': >> drivers/gpu/drm/i915/i915_guc_submission.c:574: error: 'b_ret' may be used >> uninitialized in this function At top level: >> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized" -- cc1: warnings being treated as errors drivers/gpu/drm/i915/intel_sprite.c: In function 'intel_check_sprite_plane': drivers/gpu/drm/i915/intel_sprite.c:763: error: 'src_x' may be used uninitialized in this function drivers/gpu/drm/i915/intel_sprite.c:763: error: 'src_y' may be used uninitialized in this function drivers/gpu/drm/i915/intel_sprite.c:763: error: 'src_w' may be used uninitialized in this function drivers/gpu/drm/i915/intel_sprite.c:763: error: 'src_h' may be used uninitialized in this function At top level: >> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized" -- cc1: warnings being treated as errors drivers/gpu/drm/i915/intel_dp.c: In function 'intel_dp_init_panel_power_sequencer': drivers/gpu/drm/i915/intel_dp.c:5101: error: 'pp_div_reg.reg' may be used uninitialized in this function drivers/gpu/drm/i915/intel_dp.c: In function 'intel_dp_init_panel_power_sequencer_registers': drivers/gpu/drm/i915/intel_dp.c:5223: error: 'pp_div_reg.reg' may be used uninitialized in this function At top level: >> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized" -- cc1: warnings being treated as errors drivers/gpu/drm/i915/intel_tv.c: In function 'intel_tv_detect': >> drivers/gpu/drm/i915/intel_tv.c:1308: error: 'type' may be used >> uninitialized in this function At top level: >> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized" vim +/b_ret +574 drivers/gpu/drm/i915/i915_guc_submission.c 44a28b1d Dave Gordon 2015-08-12 558 44a28b1d Dave Gordon 2015-08-12 559 return 0; 44a28b1d Dave Gordon 2015-08-12 560 } 44a28b1d Dave Gordon 2015-08-12 561 44a28b1d Dave Gordon 2015-08-12 562 /** 44a28b1d Dave Gordon 2015-08-12 563 * i915_guc_submit() - Submit commands through GuC 44a28b1d Dave Gordon 2015-08-12 564 * @client: the guc client where commands will go through feda33ef Alex Dai 2015-10-19 565 * @rq: request associated with the commands 44a28b1d Dave Gordon 2015-08-12 566 * 44a28b1d Dave Gordon 2015-08-12 567 * Return: 0 if succeed 44a28b1d Dave Gordon 2015-08-12 568 */ 44a28b1d Dave Gordon 2015-08-12 569 int i915_guc_submit(struct i915_guc_client *client, 44a28b1d Dave Gordon 2015-08-12 570 struct drm_i915_gem_request *rq) 44a28b1d Dave Gordon 2015-08-12 571 { 44a28b1d Dave Gordon 2015-08-12 572 struct intel_guc *guc = client->guc; 4a570db5 Tvrtko Ursulin 2016-03-16 573 unsigned int engine_id = rq->engine->guc_id; 44a28b1d Dave Gordon 2015-08-12 @574 int q_ret, b_ret; 44a28b1d Dave Gordon 2015-08-12 575 44a28b1d Dave Gordon 2015-08-12 576 q_ret = guc_add_workqueue_item(client, rq); 44a28b1d Dave Gordon 2015-08-12 577 if (q_ret == 0) 44a28b1d Dave Gordon 2015-08-12 578 b_ret = guc_ring_doorbell(client); 44a28b1d Dave Gordon 2015-08-12 579 397097b0 Alex Dai 2016-01-23 580 client->submissions[engine_id] += 1; 44a28b1d Dave Gordon 2015-08-12 581 if (q_ret) { 44a28b1d Dave Gordon 2015-08-12 582 client->q_fail += 1; :::::: The code at line 574 was first introduced by commit :::::: 44a28b1d36762499de6fd701fcce6814eefe31d7 drm/i915: Implementation of GuC submission client :::::: TO: Dave Gordon <[email protected]> :::::: CC: Daniel Vetter <[email protected]> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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