Hi Yinghai, There are new sparse warnings show up in tree: git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-pci-pcie-link head: d6396cb3ed85b8a95bd07d9c8f8f70b96a8f3d11 commit: d6396cb3ed85b8a95bd07d9c8f8f70b96a8f3d11 [104/104] PCI: Add link_disable in /sysfs for pcie device All sparse warnings: + drivers/pci/pcie-sysfs.c:27:25: sparse: symbol 'pcie_link_disable_attr' was not declared. Should it be static? drivers/pci/pcie-sysfs.c:53:24: sparse: symbol 'pci_dev_pcie_attr_group' was not declared. Should it be static? vim +27 drivers/pci/pcie-sysfs.c 24 return count; 25 } 26 > 27 struct device_attribute pcie_link_disable_attr = 28 __ATTR(pcie_link_disable, 0644, 29 pcie_link_disable_show, pcie_link_disable_store); 30 Please consider folding the attached diff :-) --- 0-DAY kernel build testing backend Open Source Technology Centre Fengguang Wu Intel Corporation