[PATCH] ACPI: fix find_pci_rootbridge() return value to save time finding rootbridge

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The acpi_get_pci_rootbridge_handle() walk through the acpi ns to find
the handle matches the seg, bus and the PCI_ROOT_HID_STRING.  It should
returns the handle as soon as if find the match.  But the current codes
always parse through the whole namespace because the user_function
find_pci_rootbridge() returns status=AE_OK when it finds the match.

This patch, on top of 2.6.19-rc1, is to make the find_pci_rootbridge()
returning AE_CTRL_TERMINATE when it finds the match.

Signed-off-by: Justin Chen <justin.chen@xxxxxx>

------------------------------------------------------------------------
-------------------------------------------
--- 2.6.19-rc1/drivers/acpi/glue.c.orig	2006-10-10 16:02:40.000000000
-0700
+++ 2.6.19-rc1/drivers/acpi/glue.c	2006-10-10 16:05:11.000000000
-0700
@@ -189,8 +189,12 @@ find_pci_rootbridge(acpi_handle handle, 
 	bus = tmp;
 
 	if (seg == find->seg && bus == find->bus)
+	{
 		find->handle = handle;
-	status = AE_OK;
+		status = AE_CTRL_TERMINATE;
+	}
+	else
+		status = AE_OK;
       exit:
 	kfree(buffer.pointer);
 	return status;
-
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