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authorBjorn Helgaas <bhelgaas@google.com>2011-10-28 16:25:50 -0600
committerJesse Barnes <jbarnes@virtuousgeek.org>2012-01-06 12:10:52 -0800
commita2ebb827958a4ab3577443f89037f229683c644a (patch)
treec1e44c472315f75c8ba9d147e3712db1e9017a1e /include/linux/pci.h
parent166c6370754a0a92386e2ffb0eeb06e50ac8588d (diff)
downloadop-kernel-dev-a2ebb827958a4ab3577443f89037f229683c644a.zip
op-kernel-dev-a2ebb827958a4ab3577443f89037f229683c644a.tar.gz
PCI: add pci_scan_root_bus() that accepts resource list
"Early" and "header" quirks often use incorrect bus resources because they see the default resources assigned by pci_create_bus(), before the architecture fixes them up (typically in pcibios_fixup_bus()). Regions reserved by these quirks end up with the wrong parents. Here's the standard path for scanning a PCI root bus: pci_scan_bus or pci_scan_bus_parented pci_create_bus <-- A create with default resources pci_scan_child_bus pci_scan_slot pci_scan_single_device pci_scan_device pci_setup_device pci_fixup_device(early) <-- B pci_device_add pci_fixup_device(header) <-- C pcibios_fixup_bus <-- D fill in correct resources Early and header quirks at B and C use the default (incorrect) root bus resources rather than those filled in at D. This patch adds a new pci_scan_root_bus() function that sets the bus resources correctly from a supplied list of resources. I intend to remove pci_scan_bus() and pci_scan_bus_parented() after fixing all callers. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include/linux/pci.h')
-rw-r--r--include/linux/pci.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index eacb1e5..5102d74 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -673,6 +673,9 @@ static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *o
struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
struct pci_ops *ops, void *sysdata,
struct list_head *resources);
+struct pci_bus * __devinit pci_scan_root_bus(struct device *parent, int bus,
+ struct pci_ops *ops, void *sysdata,
+ struct list_head *resources);
struct pci_bus *pci_create_bus(struct device *parent, int bus,
struct pci_ops *ops, void *sysdata);
struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
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