tree: https://github.com/l1k/linux pciehp_dpc_v1 head: a0b9f6e639a1ab50faab2ed7a4b06994e9742b2a commit: a0b9f6e639a1ab50faab2ed7a4b06994e9742b2a [1/1] PCI: pciehp: Ignore Link Down/Up caused by DPC config: powerpc-randconfig-r034-20210324 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a4fb88669cd98db6fef7dcac88e3ec425d40c00d) 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 powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://github.com/l1k/linux/commit/a0b9f6e639a1ab50faab2ed7a4b06994e9742b2a git remote add l1k https://github.com/l1k/linux git fetch --no-tags l1k pciehp_dpc_v1 git checkout a0b9f6e639a1ab50faab2ed7a4b06994e9742b2a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, ^ drivers/pci/hotplug/pciehp_hpc.c:577:32: error: use of undeclared identifier 'pdev' clear_bit(PCI_DPC_RECOVERED, &pdev->priv_flags); ^ 2 errors generated. vim +/pdev +575 drivers/pci/hotplug/pciehp_hpc.c 565 566 static void pciehp_ignore_dpc_link_change(struct controller *ctrl, int irq) 567 { 568 /* 569 * Ignore link changes which occurred while waiting for DPC recovery. 570 * Could be several if DPC triggered multiple times consecutively. 571 */ 572 synchronize_hardirq(irq); 573 atomic_and(~PCI_EXP_SLTSTA_DLLSC, &ctrl->pending_events); 574 if (pciehp_poll_mode) 576 PCI_EXP_SLTSTA_DLLSC); 577 clear_bit(PCI_DPC_RECOVERED, &pdev->priv_flags); 578 ctrl_info(ctrl, "Slot(%s): Link Down/Up ignored (recovered by DPC)\n", 579 slot_name(ctrl)); 580 581 /* 582 * If the link is unexpectedly down after successful recovery, 583 * the corresponding link change may have been ignored above. 584 * Synthesize it to ensure that it is acted on. 585 */ 586 down_read(&ctrl->reset_lock); 587 if (!pciehp_check_link_active(ctrl)) 588 pciehp_request(ctrl, PCI_EXP_SLTSTA_DLLSC); 589 up_read(&ctrl->reset_lock); 590 } 591 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org