Hi Markus, [auto build test ERROR on drm/drm-next] [also build test ERROR on v4.14-rc6 next-20171018] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/SF-Markus-Elfring/R-Car-Display-Unit-Fine-tuning-for-some-function-implementations/20171026-160928 base: git://people.freedesktop.org/~airlied/linux.git drm-next config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm64 All error/warnings (new ones prefixed by >>): drivers/gpu/drm/rcar-du/rcar_du_kms.c: In function 'rcar_du_encoders_init': >> drivers/gpu/drm/rcar-du/rcar_du_kms.c:415:9: error: 'ret' undeclared (first use in this function) return ret; ^~~ drivers/gpu/drm/rcar-du/rcar_du_kms.c:415:9: note: each undeclared identifier is reported only once for each function it appears in >> drivers/gpu/drm/rcar-du/rcar_du_kms.c:416:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ vim +/ret +415 drivers/gpu/drm/rcar-du/rcar_du_kms.c 362 363 static int rcar_du_encoders_init(struct rcar_du_device *rcdu) 364 { 365 struct device_node *np = rcdu->dev->of_node; 366 struct device_node *ep_node; 367 unsigned int num_encoders = 0; 368 369 /* 370 * Iterate over the endpoints and create one encoder for each output 371 * pipeline. 372 */ 373 for_each_endpoint_of_node(np, ep_node) { 374 enum rcar_du_output output; 375 struct of_endpoint ep; 376 unsigned int i; 377 int ret; 378 379 ret = of_graph_parse_endpoint(ep_node, &ep); 380 if (ret < 0) 381 goto put_node; 382 383 /* Find the output route corresponding to the port number. */ 384 for (i = 0; i < RCAR_DU_OUTPUT_MAX; ++i) { 385 if (rcdu->info->routes[i].possible_crtcs && 386 rcdu->info->routes[i].port == ep.port) { 387 output = i; 388 break; 389 } 390 } 391 392 if (i == RCAR_DU_OUTPUT_MAX) { 393 dev_warn(rcdu->dev, 394 "port %u references unexisting output, skipping\n", 395 ep.port); 396 continue; 397 } 398 399 /* Process the output pipeline. */ 400 ret = rcar_du_encoders_init_one(rcdu, output, &ep); 401 if (ret < 0) { 402 if (ret == -EPROBE_DEFER) 403 goto put_node; 404 405 continue; 406 } 407 408 num_encoders++; 409 } 410 411 return num_encoders; 412 413 put_node: 414 of_node_put(ep_node); > 415 return ret; > 416 } 417 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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