diff options
| author | Chen, Justin <justin.chen@hp.com> | 2006-10-10 23:07:00 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2006-10-27 08:31:16 +0200 |
| commit | 2f000f5c153e984d5c166e42a9d38113de8693b3 (patch) | |
| tree | bec7309d65b6ada54c86692df4cfa85a8d57137c /drivers/acpi/glue.c | |
| parent | ACPI: make ec_transaction not extern (diff) | |
| download | linux-2f000f5c153e984d5c166e42a9d38113de8693b3.tar.xz linux-2f000f5c153e984d5c166e42a9d38113de8693b3.zip | |
ACPI: optimize pci_rootbridge search
acpi_get_pci_rootbridge_handle() walks the ACPI name space
searching for seg, bus and the PCI_ROOT_HID_STRING --
returning the handle as soon as if find the match.
But the current codes always parses through the whole namespace because
the user_function find_pci_rootbridge() returns status=AE_OK when it finds the match.
Make the find_pci_rootbridge() return AE_CTRL_TERMINATE when it finds the match.
This reduces the ACPI namespace walk for acpi_get_pci_rootbridge_handle().
Signed-off-by: Justin Chen <justin.chen@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/glue.c')
| -rw-r--r-- | drivers/acpi/glue.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 10f160dc75b1..ba8fe83c6298 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -189,8 +189,12 @@ find_pci_rootbridge(acpi_handle handle, u32 lvl, void *context, void **rv) 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; |