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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-04-11 03:37:07 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-06-08 01:08:17 +0200 |
| commit | 98d9f30c820d509145757e6ecbc36013aa02f7bc (patch) | |
| tree | dd5da915d991352ced56ed849612029339f64198 /drivers/of/Kconfig | |
| parent | Revert "mm: fail GFP_DMA allocations when ZONE_DMA is not configured" (diff) | |
| download | linux-98d9f30c820d509145757e6ecbc36013aa02f7bc.tar.xz linux-98d9f30c820d509145757e6ecbc36013aa02f7bc.zip | |
pci/of: Match PCI devices to OF nodes dynamically
powerpc has two different ways of matching PCI devices to their
corresponding OF node (if any) for historical reasons. The ppc64 one
does a scan looking for matching bus/dev/fn, while the ppc32 one does a
scan looking only for matching dev/fn on each level in order to be
agnostic to busses being renumbered (which Linux does on some
platforms).
This removes both and instead moves the matching code to the PCI core
itself. It's the most logical place to do it: when a pci_dev is created,
we know the parent and thus can do a single level scan for the matching
device_node (if any).
The benefit is that all archs now get the matching for free. There's one
hook the arch might want to provide to match a PHB bus to its device
node. A default weak implementation is provided that looks for the
parent device device node, but it's not entirely reliable on powerpc for
various reasons so powerpc provides its own.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/of/Kconfig')
| -rw-r--r-- | drivers/of/Kconfig | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index d06a6374ed6c..cac63c9f49ae 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -71,8 +71,14 @@ config OF_MDIO config OF_PCI def_tristate PCI - depends on PCI && (PPC || MICROBLAZE || X86) + depends on PCI help OpenFirmware PCI bus accessors +config OF_PCI_IRQ + def_tristate PCI + depends on OF_PCI && OF_IRQ + help + OpenFirmware PCI IRQ routing helpers + endmenu # OF |