diff options
| author | Yinghai Lu | 2012-11-03 21:39:24 -0700 |
|---|---|---|
| committer | Bjorn Helgaas | 2013-01-07 12:18:36 -0700 |
| commit | f7ac356dc3da1f69dc52cb6273e08e53b85b4884 (patch) | |
| tree | cef579eb500d58fc57789bd6a49ee17a4ef54293 | |
| parent | d1c3ed669a2d452cacfb48c2d171a1f364dae2ed (diff) | |
x86/PCI: Factor out pcibios_allocate_bridge_resources()
Thus pcibios_allocate_bus_resources() could more simple and clean.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | arch/x86/pci/i386.c | 46 |
1 files changed, 24 insertions, 22 deletions
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c index dd8ca6f7223b..980036286909 100644 --- a/arch/x86/pci/i386.c +++ b/arch/x86/pci/i386.c @@ -193,34 +193,36 @@ EXPORT_SYMBOL(pcibios_align_resource); * as well. */ -static void __init pcibios_allocate_bus_resources(struct list_head *bus_list) +static void __init pcibios_allocate_bridge_resources(struct pci_dev *dev) { - struct pci_bus *bus; - struct pci_dev *dev; int idx; struct resource *r; + for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) { + r = &dev->resource[idx]; + if (!r->flags) + continue; + if (!r->start || pci_claim_resource(dev, idx) < 0) { + /* + * Something is wrong with the region. + * Invalidate the resource to prevent + * child resource allocations in this + * range. + */ + r->start = r->end = 0; + r->flags = 0; + } + } +} + +static void __init pcibios_allocate_bus_resources(struct list_head *bus_list) +{ + struct pci_bus *bus; + /* Depth-First Search on bus tree */ list_for_each_entry(bus, bus_list, node) { - if ((dev = bus->self)) { - for (idx = PCI_BRIDGE_RESOURCES; - idx < PCI_NUM_RESOURCES; idx++) { - r = &dev->resource[idx]; - if (!r->flags) - continue; - if (!r->start || - pci_claim_resource(dev, idx) < 0) { - /* - * Something is wrong with the region. - * Invalidate the resource to prevent - * child resource allocations in this - * range. - */ - r->start = r->end = 0; - r->flags = 0; - } - } - } + if (bus->self) + pcibios_allocate_bridge_resources(bus->self); pcibios_allocate_bus_resources(&bus->children); } } |