Here's a sample of how I think the ACPI namespace device detection should be done. I think this is almost functionally equivalent to your "Locate the IPMI system interface in ACPI namespace" patch. The difference I'm aware of is that your patch doesn't call acpi_register_gsi() for IRQs from the device _CRS, so I don't think those interrupts would work. (I can't test this because I don't have a box that reports an IRQ in _CRS.) PNPACPI takes care of this GSI registration for us. Patches 3 & 4 are not really related to the main point here, but I left them in because without 4, we'll report both SPMI and ACPI namespace devices as being from "ACPI". --- Bjorn Helgaas (5): PNPACPI: save struct acpi_device, not just acpi_handle PNP: add interface to retrieve ACPI device from a PNPACPI device ipmi: remove unused PCI probe code ipmi: refer to table as "SPMI", not "ACPI" ipmi: add PNP discovery (ACPI namespace via PNPACPI) drivers/char/ipmi/ipmi_si_intf.c | 118 +++++++++++++++++++++++++++++++++++--- drivers/pnp/pnpacpi/core.c | 19 ++++-- drivers/pnp/pnpacpi/rsparser.c | 9 ++- include/linux/pnp.h | 13 ++++ 4 files changed, 141 insertions(+), 18 deletions(-) -- Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html