http://bugzilla.kernel.org/show_bug.cgi?id=11049
[EMAIL PROTECTED] changed:
What |Removed |Added
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Attachment #16776|0 |1
is obsolete| |
------- Comment #12 from [EMAIL PROTECTED] 2008-07-10 14:45 -------
Created an attachment (id=16794)
--> (http://bugzilla.kernel.org/attachment.cgi?id=16794&action=view)
proposed patch for upstream
Thanks very much, Kurk.
Here's the output for LP00:
_PRS AML buffer:
23 00 00 18 79 00
ACPI: No IRQs in resource
ACPI: Resource type 0x7 is not an IRQ entry
The "23 00 00 18" part is a small IRQ resource, three bytes long, no bits set
in the IRQ mask ("00 00"), and level-triggered, active low, shareable ("18").
The "79 00" is an End Tag (type 0x7). It is really superfluous since there is
Start Dependent Function tag, and there are no resources after it, but it is
harmless.
The _CRS data is identical, and we don't complain about that. I think we
should use something like the attached patch to make Linux stop complaining
about this. If you could test this before I post it upstream, that would be
great.
As far as deferring _PRS evaluation until we actually use the link, I still
think that's an interesting idea, but it looks like we actually *do* use the
_PRS data before enabling a connected PCI device. acpi_irq_penalty_init() uses
_PRS to do some IRQ balancing. So there are definitely issues to consider
here.
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