From: Andrew Morton drivers/built-in.o: In function `pci_scan_slot': drivers/pci/probe.c:1016: undefined reference to `pcie_aspm_init_link_state' drivers/built-in.o: In function `pci_stop_dev': drivers/pci/remove.c:36: undefined reference to `pcie_aspm_exit_link_state' drivers/built-in.o: In function `pci_set_power_state': drivers/pci/pci.c:524: undefined reference to `pcie_aspm_pm_state_change' It needs PCIE. Cc: Greg KH Signed-off-by: Andrew Morton --- drivers/pci/pcie/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN drivers/pci/pcie/Kconfig~fix-gregkh-pci-pci-pcie-aspm-support drivers/pci/pcie/Kconfig --- a/drivers/pci/pcie/Kconfig~fix-gregkh-pci-pci-pcie-aspm-support +++ a/drivers/pci/pcie/Kconfig @@ -32,7 +32,7 @@ source "drivers/pci/pcie/aer/Kconfig" # config PCIEASPM bool "PCI Express ASPM support(Experimental)" - depends on PCI && EXPERIMENTAL + depends on PCI && EXPERIMENTAL && PCIEPORTBUS default y help This enables PCI Express ASPM (Active State Power Management) and _