As far as ACPICA is concerned, I'm not sure if it's a good idea to have such a
warning in the kernel at all.
It's not about the kernel. It's about Intel's Linuxfirmwarekit, their BIOS test
suite. This or at least the one test of it to disassemble and recompile the ASL
http://bugzilla.novell.com/show_bug.cgi?id=516818
User trenn@novell.com added comment
http://bugzilla.novell.com/show_bug.cgi?id=516818#c7
Thomas Renninger changed:
What |Removed |Added
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CC| |john.brown3@hp.com
--- Comment #7 from Thomas Renninger 2009-06-30 03:31:12 MDT ---
tables and spit out warnings/errors and let BIOS people fix them for a proper
ASL syntax, should be part of our certification suite. I'd also say to not warn
about _S5D use which it currently does.
I opened a mainline acpica bug now:
http://acpica.org/bugzilla/show_bug.cgi?id=792
John: This is not sever, but it would be interesting if the _S5D function is
actually used on Windows OSes and whether Linux should consider them too when
shutting down a machine.
The _S1D - _S4D functions are described in the ACPI spec in chapter
7.2.14-7.2.17 (version 4.0). Extract for _S4D:
----------
This object evaluates to an integer that conveys to OSPM the highest power
(lowest number) D-state supported by this device in the S4 system sleeping
state.
----------
IMO this does not make much sense for S5 (I expect devices are currently shut
down and not entering any ACPI D-state on machine shutdown currently), but as
HP provides these functions we should better ask before missing something.
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