http://bugzilla.kernel.org/show_bug.cgi?id=13036
Len Brown <len.br...@intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Component|Platform-Drivers |ACPICA-Core
AssignedTo|acpi_platform-driv...@kerne |acpi_acpica-c...@kernel-bug
|l-bugs.osdl.org |s.osdl.org
--- Comment #4 from Len Brown <len.br...@intel.com> 2009-04-07 21:26:26 ---
This Sony has lots of writes to debug port 0x80.
However, the AML is doing this with 32-bit writes
rather than a 1-byte write.
Linux is detecting the illegal access to ports 81-83,
blocking them, and complaining.
My guess is that Windows would allow a 1-byte write
to port 80, but silently block a 4-byte write
to port 80.
The DSDT in this sony is full of debug writes
to method P8XH, so you'll get these whenever
the BIOS developer wanted to write to the 7-segment
debug port on their prototype -- over 60 calls...
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