tree: https://github.com/0day-ci/linux/commits/UPDATE-20200919-040329/Daniel-Ve... head: 94cdb5aa39405ff16ad98f65a8d44e9a8e55dac7 commit: 0eecbea55f799c9e404dcc6e3249af908252a240 [2/4] drm/i915/selftests: align more to real device lifetimes config: x86_64-randconfig-a003-20200917 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ed79827aea444e6995fb3d36abc2bfd36331773c) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 0eecbea55f799c9e404dcc6e3249af908252a240 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/i915/i915_gem.c:1397: pr_err("Failed to allocate mock GEM device: err=%d\n", PTR_ERR(i915)); ~~ ^~~~~~~~~~~~~ %ld include/linux/printk.h:339:33: note: expanded from macro 'pr_err' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ In file included from drivers/gpu/drm/i915/i915_gem.c:1397: drivers/gpu/drm/i915/selftests/mock_gem_device.c:124:6: warning: unused variable 'err' [-Wunused-variable] int err; ^ 2 warnings generated. # https://github.com/0day-ci/linux/commit/0eecbea55f799c9e404dcc6e3249af908... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20200919-040329/Daniel-Vetter/managed-drm_device-absolute-final-leftover-bits/20200918-212606 git checkout 0eecbea55f799c9e404dcc6e3249af908252a240 vim +147 drivers/gpu/drm/i915/selftests/mock_gem_device.c 116 117 struct drm_i915_private *mock_gem_device(void) 118 { 119 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU) 120 static struct dev_iommu fake_iommu = { .priv = (void *)-1 }; 121 #endif 122 struct drm_i915_private *i915; 123 struct pci_dev *pdev; 124 int err; 125 126 pdev = kzalloc(sizeof(*pdev), GFP_KERNEL); 127 if (!pdev) 128 return NULL; 129 device_initialize(&pdev->dev); 130 pdev->class = PCI_BASE_CLASS_DISPLAY << 16; 131 pdev->dev.release = release_dev; 132 dev_set_name(&pdev->dev, "mock"); 133 dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 134 135 #if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU) 136 /* HACK to disable iommu for the fake device; force identity mapping */ 137 pdev->dev.iommu = &fake_iommu; 138 #endif 139 if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) { 140 put_device(&pdev->dev); 141 return NULL; 142 } 143 144 i915 = devm_drm_dev_alloc(&pdev->dev, &mock_driver, 145 struct drm_i915_private, drm); 146 if (IS_ERR(i915)) { 148 devres_release_group(&pdev->dev, NULL); 149 put_device(&pdev->dev); 150 151 return NULL; 152 } 153 154 pci_set_drvdata(pdev, i915); 155 i915->drm.pdev = pdev; 156 157 dev_pm_domain_set(&pdev->dev, &pm_domain); 158 pm_runtime_enable(&pdev->dev); 159 pm_runtime_dont_use_autosuspend(&pdev->dev); 160 if (pm_runtime_enabled(&pdev->dev)) 161 WARN_ON(pm_runtime_get_sync(&pdev->dev)); 162 163 164 i915_params_copy(&i915->params, &i915_modparams); 165 166 intel_runtime_pm_init_early(&i915->runtime_pm); 167 168 /* Using the global GTT may ask questions about KMS users, so prepare */ 169 drm_mode_config_init(&i915->drm); 170 171 mkwrite_device_info(i915)->gen = -1; 172 173 mkwrite_device_info(i915)->page_sizes = 174 I915_GTT_PAGE_SIZE_4K | 175 I915_GTT_PAGE_SIZE_64K | 176 I915_GTT_PAGE_SIZE_2M; 177 178 mkwrite_device_info(i915)->memory_regions = REGION_SMEM; 179 intel_memory_regions_hw_probe(i915); 180 181 mock_uncore_init(&i915->uncore, i915); 182 183 i915_gem_init__mm(i915); 184 intel_gt_init_early(&i915->gt, i915); 185 atomic_inc(&i915->gt.wakeref.count); /* disable; no hw support */ 186 i915->gt.awake = -ENODEV; 187 188 i915->wq = alloc_ordered_workqueue("mock", 0); 189 if (!i915->wq) 190 goto err_drv; 191 192 mock_init_contexts(i915); 193 194 mock_init_ggtt(i915, &i915->ggtt); 195 i915->gt.vm = i915_vm_get(&i915->ggtt.vm); 196 197 mkwrite_device_info(i915)->platform_engine_mask = BIT(0); 198 i915->gt.info.engine_mask = BIT(0); 199 200 i915->gt.engine[RCS0] = mock_engine(i915, "mock", RCS0); 201 if (!i915->gt.engine[RCS0]) 202 goto err_unlock; 203 204 if (mock_engine_init(i915->gt.engine[RCS0])) 205 goto err_context; 206 207 __clear_bit(I915_WEDGED, &i915->gt.reset.flags); 208 intel_engines_driver_register(i915); 209 210 i915->do_release = true; 211 212 return i915; 213 214 err_context: 215 intel_gt_driver_remove(&i915->gt); 216 err_unlock: 217 destroy_workqueue(i915->wq); 218 err_drv: 219 intel_gt_driver_late_release(&i915->gt); 220 intel_memory_regions_driver_release(i915); 221 drm_mode_config_cleanup(&i915->drm); 222 mock_destroy_device(i915); 223 224 return NULL; 225 } 226 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org