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| 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 /drivers/xen | |
| parent | adc08e2035f1859d4b129f42b2c2305ef090d226 (diff) | |
| download | blackbird-op-linux-859ac9a4be0c753cece0e30a2e4a65fd2cdcaeee.tar.gz blackbird-op-linux-859ac9a4be0c753cece0e30a2e4a65fd2cdcaeee.zip | |
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 'drivers/xen')
0 files changed, 0 insertions, 0 deletions
