tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 5e63226c72287bc6c6724d4fc7e157af0e3d7908 commit: ad0fe14e164970fe9c2ab03b7a6ce452435239c6 [9903/10945] dmaengine: Loongson1: Add Loongson1 dmaengine driver config: mips-randconfig-r025-20210827 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1076082a0d97bd5c16a25ee7cf3dbb6ee4b5a9fe) 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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=ad0fe14e164970fe9c2ab03b7a6ce452435239c6 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout ad0fe14e164970fe9c2ab03b7a6ce452435239c6 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=mips SHELL=/bin/bash drivers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/dma/loongson1-dma.c:359:10: warning: variable 'ret' is uninitialized when used here [-Wuninitialized] return ret; ^~~ drivers/dma/loongson1-dma.c:354:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 >> drivers/dma/loongson1-dma.c:434:28: error: no member named 'slave_map' in 'struct plat_ls1x_dma' ddev->filter.map = pdata->slave_map; ~~~~~ ^ >> drivers/dma/loongson1-dma.c:435:31: error: no member named 'slavecnt' in 'struct plat_ls1x_dma' ddev->filter.mapcnt = pdata->slavecnt; ~~~~~ ^ 1 warning and 2 errors generated. vim +434 drivers/dma/loongson1-dma.c 392 393 static int ls1x_dma_probe(struct platform_device *pdev) 394 { 395 struct device *dev = &pdev->dev; 396 struct plat_ls1x_dma *pdata; 397 struct dma_device *ddev; 398 struct ls1x_dma *dma; 399 int nr_chans, ret, i; 400 401 pdata = dev_get_platdata(dev); 402 if (!pdata) { 403 dev_err(dev, "platform data missing!\n"); 404 return -EINVAL; 405 } 406 407 nr_chans = platform_irq_count(pdev); 408 if (nr_chans <= 0) 409 return nr_chans; 410 411 dma = devm_kzalloc(dev, struct_size(dma, chan, nr_chans), GFP_KERNEL); 412 if (!dma) 413 return -ENOMEM; 414 415 /* initialize DMA device */ 416 dma->reg_base = devm_platform_ioremap_resource(pdev, 0); 417 if (IS_ERR(dma->reg_base)) 418 return PTR_ERR(dma->reg_base); 419 420 ddev = &dma->ddev; 421 ddev->dev = dev; 422 ddev->copy_align = DMAENGINE_ALIGN_16_BYTES; 423 ddev->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); 424 ddev->dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); 425 ddev->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); 426 ddev->residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT; 427 ddev->device_alloc_chan_resources = ls1x_dma_alloc_chan_resources; 428 ddev->device_free_chan_resources = ls1x_dma_free_chan_resources; 429 ddev->device_prep_slave_sg = ls1x_dma_prep_slave_sg; 430 ddev->device_config = ls1x_dma_slave_config; 431 ddev->device_terminate_all = ls1x_dma_terminate_all; 432 ddev->device_tx_status = dma_cookie_status; 433 ddev->device_issue_pending = ls1x_dma_issue_pending; > 434 ddev->filter.map = pdata->slave_map; > 435 ddev->filter.mapcnt = pdata->slavecnt; 436 ddev->filter.fn = ls1x_dma_filter; 437 438 dma_cap_set(DMA_SLAVE, ddev->cap_mask); 439 INIT_LIST_HEAD(&ddev->channels); 440 441 /* initialize DMA channels */ 442 for (i = 0; i < nr_chans; i++) { 443 ret = ls1x_dma_chan_probe(pdev, dma, i); 444 if (ret) 445 return ret; 446 } 447 dma->nr_chans = nr_chans; 448 449 dma->clk = devm_clk_get(dev, pdev->name); 450 if (IS_ERR(dma->clk)) { 451 dev_err(dev, "failed to get %s clock!\n", pdev->name); 452 return PTR_ERR(dma->clk); 453 } 454 clk_prepare_enable(dma->clk); 455 456 ret = dma_async_device_register(ddev); 457 if (ret) { 458 dev_err(dev, "failed to register DMA device! %d\n", ret); 459 clk_disable_unprepare(dma->clk); 460 return ret; 461 } 462 463 platform_set_drvdata(pdev, dma); 464 dev_info(dev, "Loongson1 DMA driver registered\n"); 465 466 return 0; 467 } 468 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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