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由 Bjorn Helgaas 提交于
Bail out if we don't find an enclosing IOC. Previously, if we didn't find one, we tried to set things up using garbage for the SBA/IOC register address, which causes a crash. This crash only happens if firmware supplies a defective ACPI namespace, so it doesn't fix any problems in the field. Signed-off-by: NBjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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