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

   1 From fe17cba0e4efb6cf6d1e4e79fa4c6e062fe32b39 Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Wed, 3 Apr 2013 19:28:50 +0200
   4 Subject: [PATCH 2/2] MIPS: 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 ---
  21  arch/mips/pci/pci.c |    8 +++++++-
  22  1 file changed, 7 insertions(+), 1 deletion(-)
  23
  24 --- a/arch/mips/pci/pci.c
  25 +++ b/arch/mips/pci/pci.c
  26 @@ -115,7 +115,6 @@ static void pcibios_scanbus(struct pci_c
  27                         pci_bus_assign_resources(bus);
  28                         pci_enable_bridges(bus);
  29                 }
  30 -               bus->dev.of_node = hose->of_node;
  31         }
  32  }
  33
  34 @@ -169,6 +168,13 @@ void pci_load_of_ranges(struct pci_contr
  35                 }
  36         }
  37  }
  38 +
  39 +struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
  40 +{
  41 +       struct pci_controller *hose = bus->sysdata;
  42 +
  43 +       return of_node_get(hose->of_node);
  44 +}
  45  #endif
  46
  47  static DEFINE_MUTEX(pci_scan_mutex);