Hi Nick, [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on v4.4-rc2 next-20151124] url: https://github.com/0day-ci/linux/commits/Nick-Hoath/drm-i915-Change-context-lifecycle/20151125-002840 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-x019-11241713 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): drivers/gpu/drm/i915/intel_lrc.c: In function 'intel_lr_context_free': >> drivers/gpu/drm/i915/intel_lrc.c:2404:6: warning: ignoring return value of 'i915_wait_request', declared with attribute warn_unused_result [-Wunused-result] i915_wait_request(req); ^ drivers/gpu/drm/i915/intel_lrc.c: In function 'intel_logical_ring_begin': drivers/gpu/drm/i915/intel_lrc.c:711:17: warning: 'space' may be used uninitialized in this function [-Wmaybe-uninitialized] ringbuf->space = space; ^ drivers/gpu/drm/i915/intel_lrc.c:679:11: note: 'space' was declared here unsigned space; ^ vim +/i915_wait_request +2404 drivers/gpu/drm/i915/intel_lrc.c 2388 ctx->engine[i].ringbuf; 2389 struct intel_engine_cs *ring = ringbuf->ring; 2390 2391 if (ctx == ring->default_context) { 2392 intel_unpin_ringbuffer_obj(ringbuf); 2393 i915_gem_object_ggtt_unpin(ctx_obj); 2394 } 2395 2396 if (ctx->engine[ring->id].unsaved) { 2397 int ret; 2398 struct drm_i915_gem_request *req; 2399 2400 ret = i915_gem_request_alloc(ring, 2401 ring->default_context, &req); 2402 if (!ret) { 2403 i915_add_request(req); > 2404 i915_wait_request(req); 2405 } 2406 } 2407 2408 WARN_ON(ctx->engine[i].pin_count); 2409 intel_ringbuffer_free(ringbuf); 2410 drm_gem_object_unreference(&ctx_obj->base); 2411 } 2412 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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