diff options
Diffstat (limited to 'target/linux/kirkwood/patches-3.10/0003-of-pci-Add-of_pci_parse_bus_range-function.patch')
| -rw-r--r-- | target/linux/kirkwood/patches-3.10/0003-of-pci-Add-of_pci_parse_bus_range-function.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/kirkwood/patches-3.10/0003-of-pci-Add-of_pci_parse_bus_range-function.patch b/target/linux/kirkwood/patches-3.10/0003-of-pci-Add-of_pci_parse_bus_range-function.patch new file mode 100644 index 0000000000..74a839701c --- /dev/null +++ b/target/linux/kirkwood/patches-3.10/0003-of-pci-Add-of_pci_parse_bus_range-function.patch @@ -0,0 +1,61 @@ +From 6275a8e0bacac9702350b6a003470a9ce67c9139 Mon Sep 17 00:00:00 2001 +From: Thierry Reding <thierry.reding@avionic-design.de> +Date: Mon, 11 Feb 2013 09:22:20 +0100 +Subject: [PATCH 03/29] of/pci: Add of_pci_parse_bus_range() function + +This function can be used to parse a bus-range property as specified by +device nodes representing PCI bridges. + +Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> +--- + drivers/of/of_pci.c | 25 +++++++++++++++++++++++++ + include/linux/of_pci.h | 1 + + 2 files changed, 26 insertions(+) + +diff --git a/drivers/of/of_pci.c b/drivers/of/of_pci.c +index 4dd7b9b..42c687a 100644 +--- a/drivers/of/of_pci.c ++++ b/drivers/of/of_pci.c +@@ -64,3 +64,28 @@ int of_pci_get_devfn(struct device_node *np) + return (be32_to_cpup(reg) >> 8) & 0xff; + } + EXPORT_SYMBOL_GPL(of_pci_get_devfn); ++ ++/** ++ * of_pci_parse_bus_range() - parse the bus-range property of a PCI device ++ * @node: device node ++ * @res: address to a struct resource to return the bus-range ++ * ++ * Returns 0 on success or a negative error-code on failure. ++ */ ++int of_pci_parse_bus_range(struct device_node *node, struct resource *res) ++{ ++ const __be32 *values; ++ int len; ++ ++ values = of_get_property(node, "bus-range", &len); ++ if (!values || len < sizeof(*values) * 2) ++ return -EINVAL; ++ ++ res->name = node->name; ++ res->start = be32_to_cpup(values++); ++ res->end = be32_to_cpup(values); ++ res->flags = IORESOURCE_BUS; ++ ++ return 0; ++} ++EXPORT_SYMBOL_GPL(of_pci_parse_bus_range); +diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h +index 91ec484..7a04826 100644 +--- a/include/linux/of_pci.h ++++ b/include/linux/of_pci.h +@@ -11,5 +11,6 @@ struct device_node; + struct device_node *of_pci_find_child_device(struct device_node *parent, + unsigned int devfn); + int of_pci_get_devfn(struct device_node *np); ++int of_pci_parse_bus_range(struct device_node *node, struct resource *res); + + #endif +-- +1.8.4.rc1 + |