Currently we always require an I/O port resource for PCI host bridges. Even if the bridge doesn't actually support I/O port space, we add a default I/O resource for it.
These patches make I/O port space optional on ARM. Comments welcome. If these look OK, I'll fold them into the series at [1], where they should fix a resource conflict [2] in the R-Car driver. [1] http://lkml.kernel.org/r/20160606225630.20936.77349.st...@bhelgaas-glaptop2.roam.corp.google.com [2] http://lkml.kernel.org/r/camuhmdvglftd-bjrz+gvkgye8dkdzzq6dnytkus+jvpthjs...@mail.gmail.com --- Bjorn Helgaas (2): ARM: Make PCI I/O space optional PCI: rcar: Drop gen2 dummy I/O port region arch/arm/include/asm/mach/pci.h | 1 + arch/arm/kernel/bios32.c | 13 +++++++++++-- drivers/pci/host/pci-rcar-gen2.c | 11 +---------- 3 files changed, 13 insertions(+), 12 deletions(-)
