ACPI: export acpi_pci_root and friends

We can simplify ACPI drivers if we can tell whether a handle is an
ACPI PCI root or not.

Reviewed-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 55b5b90..31b961c 100644 (file)
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -61,20 +61,6 @@ static struct acpi_driver acpi_pci_root_driver = {
                },
 };
 
-struct acpi_pci_root {
-       struct list_head node;
-       struct acpi_device *device;
-       struct pci_bus *bus;
-       u16 segment;
-       u8 bus_nr;
-
-       u32 osc_support_set;    /* _OSC state of support bits */
-       u32 osc_control_set;    /* _OSC state of control bits */
-       u32 osc_control_qry;    /* the latest _OSC query result */
-
-       u32 osc_queried:1;      /* has _OSC control been queried? */
-};
-
 static LIST_HEAD(acpi_pci_roots);
 
 static struct acpi_pci_driver *sub_driver;
@@ -317,7 +303,7 @@ static acpi_status acpi_pci_osc_support(struct acpi_pci_root *root, u32 flags)
        return status;
 }
 
-static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
+struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
 {
        struct acpi_pci_root *root;
 
@@ -327,6 +313,7 @@ static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
        }
        return NULL;
 }
+EXPORT_SYMBOL_GPL(acpi_pci_find_root);
 
 struct acpi_handle_node {
        struct list_head node;

diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index c65e4ce..c3ace75 100644 (file)
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -369,10 +369,26 @@ int register_acpi_bus_type(struct acpi_bus_type *);
 int unregister_acpi_bus_type(struct acpi_bus_type *);
 struct device *acpi_get_physical_device(acpi_handle);
 
+struct acpi_pci_root {
+       struct list_head node;
+       struct acpi_device * device;
+       struct acpi_pci_id id;
+       struct pci_bus *bus;
+       u16 segment;
+       u8 bus_nr;
+
+       u32 osc_support_set;    /* _OSC state of support bits */
+       u32 osc_control_set;    /* _OSC state of control bits */
+       u32 osc_control_qry;    /* the latest _OSC query result */
+
+       u32 osc_queried:1;      /* has _OSC control been queried? */
+};
+
 /* helper */
 acpi_handle acpi_get_child(acpi_handle, acpi_integer);
 int acpi_is_root_bridge(acpi_handle);
 acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
+struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
 
 #ifdef CONFIG_PM_SLEEP