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| author | Deng-Cheng Zhu <dengcheng.zhu@imgtec.com> | 2013-10-08 10:33:53 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-01-24 22:39:46 +0100 |
| commit | 27547abf36af7964b53a8c9265e266df692d4806 (patch) | |
| tree | b58086eff352c4c794441b93a53544cc6fbe31c1 /arch | |
| parent | 41315b6ec108e934884d49f5fde7e1d79b3c42d2 (diff) | |
| download | lwn-27547abf36af7964b53a8c9265e266df692d4806.tar.gz lwn-27547abf36af7964b53a8c9265e266df692d4806.zip | |
MIPS: malta: Incorporate PIIX4 ACPI I/O region in PCI controller resources
Boot log says:
pci 0000:00:0a.3: no compatible bridge window for [io 0x1000-0x103f]
pci 0000:00:0a.3: no compatible bridge window for [io 0x1100-0x110f]
The io resource starting point on Malta was modified by c5de50dada (MIPS:
Malta: Change start address to avoid conflicts.) to avoid conflicts with
ACPI and SMB devices. In fact, that was not needed (and now causing
southbridge ACPI missing) since 166c637075 (PCI: add pci_create_root_bus()
that accepts resource list) and 7c090e5bfa (mips/PCI: convert to
pci_scan_root_bus() for correct root bus resources) had already done the
correct fix.
This patch actually reverts the change made by c5de50dada. And with this
fix, log says:
pci 0000:00:0a.3: quirk: [io 0x1000-0x103f] claimed by PIIX4 ACPI
pci 0000:00:0a.3: quirk: [io 0x1100-0x110f] claimed by PIIX4 SMB
These things may not be used but as part of platform resources are better
off to be included.
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6037/
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/pci/pci-malta.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/mips/pci/pci-malta.c b/arch/mips/pci/pci-malta.c index 37134ddfeaa5..f1a73890dd4f 100644 --- a/arch/mips/pci/pci-malta.c +++ b/arch/mips/pci/pci-malta.c @@ -241,9 +241,9 @@ void __init mips_pcibios_init(void) return; } - /* Change start address to avoid conflicts with ACPI and SMB devices */ - if (controller->io_resource->start < 0x00002000UL) - controller->io_resource->start = 0x00002000UL; + /* PIIX4 ACPI starts at 0x1000 */ + if (controller->io_resource->start < 0x00001000UL) + controller->io_resource->start = 0x00001000UL; iomem_resource.end &= 0xfffffffffULL; /* 64 GB */ ioport_resource.end = controller->io_resource->end; |