From 1fa051018d85b829e4b9a7ed20147df8760293ee Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Tue, 21 Jun 2016 10:54:29 -0500 Subject: ARM: Make PCI I/O space optional For callers of pci_common_init_dev(), we previously always required a PCI I/O port resource. If the caller's ->setup() function had added an I/O resource, we used that; otherwise, we added a default 64K I/O port space for it. There are PCI host bridges that do not support I/O port space, and we should not add fictitious spaces for them. If a caller sets struct hw_pci.io_optional, assume it is responsible for adding any I/O port resource it desires, and do not add any default I/O port space. Tested-by: Geert Uytterhoeven Signed-off-by: Bjorn Helgaas --- arch/arm/include/asm/mach/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm/include') diff --git a/arch/arm/include/asm/mach/pci.h b/arch/arm/include/asm/mach/pci.h index 0070e85..2d88af5 100644 --- a/arch/arm/include/asm/mach/pci.h +++ b/arch/arm/include/asm/mach/pci.h @@ -22,6 +22,7 @@ struct hw_pci { struct msi_controller *msi_ctrl; struct pci_ops *ops; int nr_controllers; + unsigned int io_optional:1; void **private_data; int (*setup)(int nr, struct pci_sys_data *); struct pci_bus *(*scan)(int nr, struct pci_sys_data *); -- cgit v1.1