diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2009-09-21 19:29:50 +0000 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-09-25 14:24:29 -0400 |
| commit | 859ac9a4be0c753cece0e30a2e4a65fd2cdcaeee (patch) | |
| tree | 10962790433ee0865ab6506c69981e8248368e46 /include/acpi | |
| parent | adc08e2035f1859d4b129f42b2c2305ef090d226 (diff) | |
| download | linux-859ac9a4be0c753cece0e30a2e4a65fd2cdcaeee.tar.bz2 | |
ACPI: identify device tree root by null parent pointer, not ACPI_BUS_TYPE
We can identify the root of the ACPI device tree by the fact that it
has no parent. This is simpler than passing around ACPI_BUS_TYPE_SYSTEM
and will help remove special treatment of the device tree root.
Currently, we add the root by hand with ACPI_BUS_TYPE_SYSTEM. If we
traverse the tree treating the root as just another device and use
acpi_get_type(), the root shows up as ACPI_TYPE_DEVICE.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acpi_bus.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 8456e8cbf9fd..bc7a69516dce 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -70,7 +70,6 @@ enum acpi_bus_device_type { ACPI_BUS_TYPE_POWER, ACPI_BUS_TYPE_PROCESSOR, ACPI_BUS_TYPE_THERMAL, - ACPI_BUS_TYPE_SYSTEM, ACPI_BUS_TYPE_POWER_BUTTON, ACPI_BUS_TYPE_SLEEP_BUTTON, ACPI_BUS_DEVICE_TYPE_COUNT |