Hi Koichiro, kernel test robot noticed the following build errors:
[auto build test ERROR on pci/next] [also build test ERROR on next-20260205] [cannot apply to vkoul-dmaengine/next pci/for-linus linus/master v6.19-rc8] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Koichiro-Den/dmaengine-dw-edma-Add-per-channel-interrupt-routing-control/20260207-013042 base: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next patch link: https://lore.kernel.org/r/20260206172646.1556847-8-den%40valinux.co.jp patch subject: [PATCH v4 7/9] PCI: endpoint: pci-epf-test: Add embedded doorbell variant config: um-randconfig-002-20260208 (https://download.01.org/0day-ci/archive/20260208/[email protected]/config) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9b8addffa70cee5b2acc5454712d9cf78ce45710) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260208/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All errors (new ones prefixed by >>): In file included from drivers/pci/endpoint/functions/pci-epf-test.c:12: In file included from include/linux/dmaengine.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:1209:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 1209 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; | ~~~~~~~~~~ ^ >> drivers/pci/endpoint/functions/pci-epf-test.c:858:3: error: cannot jump from >> this goto statement to its label 858 | goto set_status_err; | ^ drivers/pci/endpoint/functions/pci-epf-test.c:861:34: note: jump bypasses initialization of variable with __attribute__((cleanup)) 861 | struct pci_epc_remote_resource *resources __free(kfree) = | ^ 1 warning and 1 error generated. vim +858 drivers/pci/endpoint/functions/pci-epf-test.c 838 839 static void pci_epf_test_enable_doorbell_embedded(struct pci_epf_test *epf_test, 840 struct pci_epf_test_reg *reg) 841 { 842 struct pci_epc_remote_resource *dma_ctrl = NULL, *chan0 = NULL; 843 const char *irq_name = "pci-ep-test-doorbell-embedded"; 844 u32 status = le32_to_cpu(reg->status); 845 struct pci_epf *epf = epf_test->epf; 846 struct pci_epc *epc = epf->epc; 847 struct device *dev = &epf->dev; 848 enum pci_barno bar; 849 size_t align_off; 850 unsigned int i; 851 int cnt, ret; 852 u32 db_off; 853 854 cnt = pci_epc_get_remote_resources(epc, epf->func_no, epf->vfunc_no, 855 NULL, 0); 856 if (cnt <= 0) { 857 dev_err(dev, "No remote resources available for embedded doorbell\n"); > 858 goto set_status_err; 859 } 860 861 struct pci_epc_remote_resource *resources __free(kfree) = 862 kcalloc(cnt, sizeof(*resources), GFP_KERNEL); 863 if (!resources) 864 goto set_status_err; 865 866 ret = pci_epc_get_remote_resources(epc, epf->func_no, epf->vfunc_no, 867 resources, cnt); 868 if (ret < 0) { 869 dev_err(dev, "Failed to get remote resources: %d\n", ret); 870 goto set_status_err; 871 } 872 cnt = ret; 873 874 for (i = 0; i < cnt; i++) { 875 if (resources[i].type == PCI_EPC_RR_DMA_CTRL_MMIO) 876 dma_ctrl = &resources[i]; 877 else if (resources[i].type == PCI_EPC_RR_DMA_CHAN_DESC && 878 !chan0) 879 chan0 = &resources[i]; 880 } 881 882 if (!dma_ctrl || !chan0) { 883 dev_err(dev, "Missing DMA ctrl MMIO or channel #0 info\n"); 884 goto set_status_err; 885 } 886 887 bar = pci_epc_get_next_free_bar(epf_test->epc_features, 888 epf_test->test_reg_bar + 1); 889 if (bar < BAR_0) { 890 dev_err(dev, "No free BAR for embedded doorbell\n"); 891 goto set_status_err; 892 } 893 894 ret = pci_epf_align_inbound_addr(epf, bar, dma_ctrl->phys_addr, 895 &epf_test->db_bar.phys_addr, 896 &align_off); 897 if (ret) 898 goto set_status_err; 899 900 db_off = chan0->u.dma_chan_desc.db_offset; 901 if (db_off >= dma_ctrl->size || 902 align_off + db_off >= epf->bar[bar].size) { 903 dev_err(dev, "BAR%d too small for embedded doorbell (off %#zx + %#x)\n", 904 bar, align_off, db_off); 905 goto set_status_err; 906 } 907 908 epf_test->db_variant = PCI_EPF_TEST_DB_EMBEDDED; 909 910 ret = request_irq(chan0->u.dma_chan_desc.irq, 911 pci_epf_test_doorbell_embedded_irq_handler, 912 IRQF_SHARED, irq_name, epf_test); 913 if (ret) { 914 dev_err(dev, "Failed to request embedded doorbell IRQ: %d\n", 915 chan0->u.dma_chan_desc.irq); 916 goto err_cleanup; 917 } 918 epf_test->db_irq = chan0->u.dma_chan_desc.irq; 919 920 reg->doorbell_data = cpu_to_le32(0); 921 reg->doorbell_bar = cpu_to_le32(bar); 922 reg->doorbell_offset = cpu_to_le32(align_off + db_off); 923 924 epf_test->db_bar.barno = bar; 925 epf_test->db_bar.size = epf->bar[bar].size; 926 epf_test->db_bar.flags = epf->bar[bar].flags; 927 928 ret = pci_epc_set_bar(epc, epf->func_no, epf->vfunc_no, &epf_test->db_bar); 929 if (ret) 930 goto err_cleanup; 931 932 status |= STATUS_DOORBELL_ENABLE_SUCCESS; 933 reg->status = cpu_to_le32(status); 934 return; 935 936 err_cleanup: 937 pci_epf_test_doorbell_cleanup(epf_test); 938 set_status_err: 939 status |= STATUS_DOORBELL_ENABLE_FAIL; 940 reg->status = cpu_to_le32(status); 941 } 942 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
