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authorBjorn Helgaas <bhelgaas@google.com>2016-06-21 10:54:29 -0500
committerBjorn Helgaas <bhelgaas@google.com>2016-06-21 10:54:29 -0500
commit1fa051018d85b829e4b9a7ed20147df8760293ee (patch)
tree6a324aaed509fd326635df88fae8f20b371dad00 /arch/arm/include/asm/mach
parent6df68f22df726ffdda3199602ace4d03ec012372 (diff)
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 <geert+renesas@glider.be> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/arm/include/asm/mach')
-rw-r--r--arch/arm/include/asm/mach/pci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mach/pci.h b/arch/arm/include/asm/mach/pci.h
index 0070e8520cd4..2d88af5be45f 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 *);