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| author | Sinan Kaya <okaya@kernel.org> | 2018-08-10 00:32:12 -0400 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-09-17 17:32:24 -0400 |
| commit | c238252f86c1833fc0cbee3ce3b4c295d3ab24ef (patch) | |
| tree | 4d7b0116c0c4a86c6969564bf8ceceb02cfb15e0 /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | 1ad61b612b95980a4d970c52022aa01dfc0f6068 (diff) | |
PCI/ACPI: Allow _OSC presence to be optional for PCI
The PCI Firmware Spec, r3.2, sec 4.5.1, says:
For a host bridge device that originates a PCI Express hierarchy, the
_OSC interface defined in this section is required. For a host bridge
device that originates a PCI/PCI-X bus hierarchy, inclusion of an _OSC
object is optional.
Allow PCI host bridges to bail out silently if _OSC is not found.
Reported-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Sinan Kaya <okaya@kernel.org>
[bhelgaas: cite PCI Firmware spec, the authoritative source]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions