Enabling the PCI_MVEBU driver for compile testing caused a build failure on ARM randconfig builds: drivers/pci/host/pci-mvebu.c: In function 'mvebu_pcie_del_windows': drivers/pci/host/pci-mvebu.c:341:3: error: implicit declaration of function 'mvebu_mbus_del_window'; did you mean 'mvebu_pcie_del_windows'? [-Werror=implicit-function-declaration] mvebu_mbus_del_window(base, sz); ^~~~~~~~~~~~~~~~~~~~~ mvebu_pcie_del_windows drivers/pci/host/pci-mvebu.c: In function 'mvebu_pcie_add_windows': drivers/pci/host/pci-mvebu.c:364:9: error: implicit declaration of function 'mvebu_mbus_add_window_remap_by_id'; did you mean 'mvebu_pcie_add_windows'? [-Werror=implicit-function-declaration] ret = mvebu_mbus_add_window_remap_by_id(target, attribute, base, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mvebu_pcie_add_windows drivers/pci/host/pci-mvebu.c: In function 'mvebu_pcie_probe': drivers/pci/host/pci-mvebu.c:1209:2: error: implicit declaration of function 'mvebu_mbus_get_pcie_mem_aperture'; did you mean 'mvebu_mbus_get_io_win_info'? [-Werror=implicit-function-declaration] drivers/pci/host/pci-mvebu.c:1215:2: error: implicit declaration of function 'mvebu_mbus_get_pcie_io_aperture'; did you mean 'mvebu_mbus_get_io_win_info'? [-Werror=implicit-function-declaration] The problem is that the mbus helper functions are not declared in the header. There are two ways of solving this: we can change the header to provide empty stub functions for CONFIG_MVEBU_MBUS=n, or we can add back the dependency here. I picked the second option since that is simpler, but it somewhat defeats the purpose of the original patch because we still cannot compile test on other platforms this way. Fixes: 51bc085d6454 ("PCI: Improve host drivers compile test coverage") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/pci/host/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig index fa51d0893384..5340950f4b98 100644 --- a/drivers/pci/host/Kconfig +++ b/drivers/pci/host/Kconfig @@ -6,6 +6,7 @@ menu "PCI host controller drivers" config PCI_MVEBU bool "Marvell EBU PCIe controller" depends on ARCH_MVEBU || ARCH_DOVE || COMPILE_TEST + depends on MVEBU_MBUS depends on ARM depends on OF -- 2.9.0