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| author | Bjorn Helgaas <bhelgaas@google.com> | 2016-06-21 10:54:29 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-06-21 10:54:29 -0500 |
| commit | 1fa051018d85b829e4b9a7ed20147df8760293ee (patch) | |
| tree | 6a324aaed509fd326635df88fae8f20b371dad00 /arch/arm/include/asm/mach/pci.h | |
| parent | 6df68f22df726ffdda3199602ace4d03ec012372 (diff) | |
| download | linux-1fa051018d85b829e4b9a7ed20147df8760293ee.tar.bz2 | |
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/pci.h')
| -rw-r--r-- | arch/arm/include/asm/mach/pci.h | 1 |
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 *); |