1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 00aeb4801d7a..fcb881db5b0b 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -96,7 +96,7 @@ struct acpi_find_pci_root {
 static acpi_status
 do_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
 {
-        int *busnr = (int *)data;
+        unsigned long *busnr = (unsigned long *)data;
         struct acpi_resource_address64 address;
 
         if (resource->type != ACPI_RSTYPE_ADDRESS16 &&
@@ -115,13 +115,13 @@ do_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
 static int get_root_bridge_busnr(acpi_handle handle)
 {
         acpi_status status;
-        int bus, bbn;
+        unsigned long bus, bbn;
         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
         acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
 
         status = acpi_evaluate_integer(handle, METHOD_NAME__BBN, NULL,
-                                       (unsigned long *)&bbn);
+                                       &bbn);
         if (status == AE_NOT_FOUND) {
                 /* Assume bus = 0 */
                 printk(KERN_INFO PREFIX
@@ -153,7 +153,7 @@ static int get_root_bridge_busnr(acpi_handle handle)
         }
       exit:
         acpi_os_free(buffer.pointer);
-        return bbn;
+        return (int)bbn;
 }
 
 static acpi_status
@@ -203,6 +203,7 @@ acpi_handle acpi_get_pci_rootbridge_handle(unsigned int seg, unsigned int bus)
         acpi_get_devices(PCI_ROOT_HID_STRING, find_pci_rootbridge, &find, NULL);
         return find.handle;
 }
+EXPORT_SYMBOL_GPL(acpi_get_pci_rootbridge_handle);
 
 /* Get device's handler per its address under its parent */
 struct acpi_find_child {