target/linux/generic/patches-3.8/032-MIPS-PCI-Implement-pcibios_get_phb_of_node.patch

   1 From 9a97cd43f4ef62520a852b5a2348233b0f37455b Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Thu, 4 Apr 2013 20:01:23 +0200
   4 Subject: [PATCH 2/2] MIPS/PCI: Implement pcibios_get_phb_of_node
   5
   6 The of_node field of the device assigned to a
   7 PCI bus is used during scanning of the PCI bus.
   8 However on MIPS, the of_node field is assigned
   9 only after the bus has been scanned.
  10
  11 Implement the architecture specific version of
  12 'pcibios_get_phb_of_node'. Which ensures that the
  13 PCI driver core will initialize the of_node field
  14 before starting the scan.
  15
  16 Also remove the local assignment of bus->dev.of_node,
  17 it is not needed after the patch.
  18
  19 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  20 Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
  21 ---
  22  arch/mips/pci/pci.c |    8 +++++++-
  23  1 file changed, 7 insertions(+), 1 deletion(-)
  24
  25 --- a/arch/mips/pci/pci.c
  26 +++ b/arch/mips/pci/pci.c
  27 @@ -115,7 +115,6 @@ static void pcibios_scanbus(struct pci_c
  28                         pci_bus_assign_resources(bus);
  29                         pci_enable_bridges(bus);
  30                 }
  31 -               bus->dev.of_node = hose->of_node;
  32         }
  33  }
  34
  35 @@ -169,6 +168,13 @@ void pci_load_of_ranges(struct pci_contr
  36                 }
  37         }
  38  }
  39 +
  40 +struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
  41 +{
  42 +       struct pci_controller *hose = bus->sysdata;
  43 +
  44 +       return of_node_get(hose->of_node);
  45 +}
  46  #endif
  47
  48  static DEFINE_MUTEX(pci_scan_mutex);