Hi Ryan, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20210712] [also build test WARNING on v5.14-rc1] [cannot apply to drm-intel/for-linux-next drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master drm/drm-next v5.14-rc1 v5.13 v5.13-rc7] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Ryan-Taylor/drm-amdgpu-modernize-virtual-display-feature/20210713-034827 base: db503865b9ba6284edfee3825846a464cc4f4c61 config: i386-randconfig-r013-20210712 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/96f64e3b91a195cc37720de206b86c3f0378abbb git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Ryan-Taylor/drm-amdgpu-modernize-virtual-display-feature/20210713-034827 git checkout 96f64e3b91a195cc37720de206b86c3f0378abbb # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c:156:5: warning: no previous prototype for 'amdgpu_vkms_crtc_init' [-Wmissing-prototypes] 156 | int amdgpu_vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, | ^~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c:323:20: error: initialization of 'void (*)(struct drm_plane *, struct drm_atomic_state *)' from incompatible pointer type 'void (*)(struct drm_plane *, struct drm_plane_state *)' [-Werror=incompatible-pointer-types] 323 | .atomic_update = amdgpu_vkms_plane_atomic_update, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c:323:20: note: (near initialization for 'amdgpu_vkms_primary_helper_funcs.atomic_update') drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c:324:19: error: initialization of 'int (*)(struct drm_plane *, struct drm_atomic_state *)' from incompatible pointer type 'int (*)(struct drm_plane *, struct drm_plane_state *)' [-Werror=incompatible-pointer-types] 324 | .atomic_check = amdgpu_vkms_plane_atomic_check, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c:324:19: note: (near initialization for 'amdgpu_vkms_primary_helper_funcs.atomic_check') >> drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c:329:19: warning: no previous prototype for 'amdgpu_vkms_plane_init' [-Wmissing-prototypes] 329 | struct drm_plane *amdgpu_vkms_plane_init(struct drm_device *dev, | ^~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/amdgpu_vkms_crtc_init +156 drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c 155 > 156 int amdgpu_vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 157 struct drm_plane *primary, struct drm_plane *cursor) 158 { 159 int ret; 160 161 ret = drm_crtc_init_with_planes(dev, crtc, primary, cursor, 162 &amdgpu_vkms_crtc_funcs, NULL); 163 if (ret) { 164 DRM_ERROR("Failed to init CRTC\n"); 165 return ret; 166 } 167 168 drm_crtc_helper_add(crtc, &amdgpu_vkms_crtc_helper_funcs); 169 170 return ret; 171 } 172 173 static const struct drm_connector_funcs amdgpu_vkms_connector_funcs = { 174 .fill_modes = drm_helper_probe_single_connector_modes, 175 .destroy = drm_connector_cleanup, 176 .reset = drm_atomic_helper_connector_reset, 177 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 178 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 179 }; 180 181 static int amdgpu_vkms_conn_get_modes(struct drm_connector *connector) 182 { 183 int count; 184 185 count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX); 186 drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF); 187 188 return count; 189 } 190 191 static const struct drm_connector_helper_funcs amdgpu_vkms_conn_helper_funcs = { 192 .get_modes = amdgpu_vkms_conn_get_modes, 193 }; 194 195 static const struct drm_plane_funcs amdgpu_vkms_plane_funcs = { 196 .update_plane = drm_atomic_helper_update_plane, 197 .disable_plane = drm_atomic_helper_disable_plane, 198 .destroy = drm_plane_cleanup, 199 .reset = drm_atomic_helper_plane_reset, 200 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 201 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 202 }; 203 204 static void amdgpu_vkms_plane_atomic_update(struct drm_plane *plane, 205 struct drm_plane_state *old_state) 206 { 207 return; 208 } 209 210 static int amdgpu_vkms_plane_atomic_check(struct drm_plane *plane, 211 struct drm_plane_state *state) 212 { 213 struct drm_crtc_state *crtc_state; 214 bool can_position = false; 215 int ret; 216 217 if (!state->fb || WARN_ON(!state->crtc)) 218 return 0; 219 220 crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); 221 if (IS_ERR(crtc_state)) 222 return PTR_ERR(crtc_state); 223 224 ret = drm_atomic_helper_check_plane_state(state, crtc_state, 225 DRM_PLANE_HELPER_NO_SCALING, 226 DRM_PLANE_HELPER_NO_SCALING, 227 can_position, true); 228 if (ret != 0) 229 return ret; 230 231 /* for now primary plane must be visible and full screen */ 232 if (!state->visible && !can_position) 233 return -EINVAL; 234 235 return 0; 236 } 237 238 static int amdgpu_vkms_prepare_fb(struct drm_plane *plane, 239 struct drm_plane_state *new_state) 240 { 241 struct amdgpu_framebuffer *afb; 242 struct drm_gem_object *obj; 243 struct amdgpu_device *adev; 244 struct amdgpu_bo *rbo; 245 struct list_head list; 246 struct ttm_validate_buffer tv; 247 struct ww_acquire_ctx ticket; 248 uint32_t domain; 249 int r; 250 251 if (!new_state->fb) { 252 DRM_DEBUG_KMS("No FB bound\n"); 253 return 0; 254 } 255 afb = to_amdgpu_framebuffer(new_state->fb); 256 obj = new_state->fb->obj[0]; 257 rbo = gem_to_amdgpu_bo(obj); 258 adev = amdgpu_ttm_adev(rbo->tbo.bdev); 259 INIT_LIST_HEAD(&list); 260 261 tv.bo = &rbo->tbo; 262 tv.num_shared = 1; 263 list_add(&tv.head, &list); 264 265 r = ttm_eu_reserve_buffers(&ticket, &list, false, NULL); 266 if (r) { 267 dev_err(adev->dev, "fail to reserve bo (%d)\n", r); 268 return r; 269 } 270 271 if (plane->type != DRM_PLANE_TYPE_CURSOR) 272 domain = amdgpu_display_supported_domains(adev, rbo->flags); 273 else 274 domain = AMDGPU_GEM_DOMAIN_VRAM; 275 276 r = amdgpu_bo_pin(rbo, domain); 277 if (unlikely(r != 0)) { 278 if (r != -ERESTARTSYS) 279 DRM_ERROR("Failed to pin framebuffer with error %d\n", r); 280 ttm_eu_backoff_reservation(&ticket, &list); 281 return r; 282 } 283 284 r = amdgpu_ttm_alloc_gart(&rbo->tbo); 285 if (unlikely(r != 0)) { 286 amdgpu_bo_unpin(rbo); 287 ttm_eu_backoff_reservation(&ticket, &list); 288 DRM_ERROR("%p bind failed\n", rbo); 289 return r; 290 } 291 292 ttm_eu_backoff_reservation(&ticket, &list); 293 294 afb->address = amdgpu_bo_gpu_offset(rbo); 295 296 amdgpu_bo_ref(rbo); 297 298 return 0; 299 } 300 301 static void amdgpu_vkms_cleanup_fb(struct drm_plane *plane, 302 struct drm_plane_state *old_state) 303 { 304 struct amdgpu_bo *rbo; 305 int r; 306 307 if (!old_state->fb) 308 return; 309 310 rbo = gem_to_amdgpu_bo(old_state->fb->obj[0]); 311 r = amdgpu_bo_reserve(rbo, false); 312 if (unlikely(r)) { 313 DRM_ERROR("failed to reserve rbo before unpin\n"); 314 return; 315 } 316 317 amdgpu_bo_unpin(rbo); 318 amdgpu_bo_unreserve(rbo); 319 amdgpu_bo_unref(&rbo); 320 } 321 322 static const struct drm_plane_helper_funcs amdgpu_vkms_primary_helper_funcs = { 323 .atomic_update = amdgpu_vkms_plane_atomic_update, 324 .atomic_check = amdgpu_vkms_plane_atomic_check, 325 .prepare_fb = amdgpu_vkms_prepare_fb, 326 .cleanup_fb = amdgpu_vkms_cleanup_fb, 327 }; 328 > 329 struct drm_plane *amdgpu_vkms_plane_init(struct drm_device *dev, 330 enum drm_plane_type type, int index) 331 { 332 struct drm_plane *plane; 333 int ret; 334 335 plane = kzalloc(sizeof(*plane), GFP_KERNEL); 336 if (!plane) 337 return ERR_PTR(-ENOMEM); 338 339 ret = drm_universal_plane_init(dev, plane, 1 << index, 340 &amdgpu_vkms_plane_funcs, 341 amdgpu_vkms_formats, 342 ARRAY_SIZE(amdgpu_vkms_formats), 343 NULL, type, NULL); 344 if (ret) { 345 kfree(plane); 346 return ERR_PTR(ret); 347 } 348 349 drm_plane_helper_add(plane, &amdgpu_vkms_primary_helper_funcs); 350 351 return plane; 352 } 353 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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