Re: [ACPICA] EmbeddedControl region handling bug in PNP0C14

[Carlos Corbacho <carlos@strangeworlds.co.uk>]

On Wednesday 28 November 2007 18:08:44 Moore, Robert wrote:
> This will probably require a trace.

Here's the relevant ACPI error messages (with full ACPI debugging enabled) 
from acer_acpi, with some comments as to which method is 
being called and what arguments we're passing.

This user tested this on Kubuntu Gutsy (7.10) x86-64, with a custom 2.6.23.9 
kernel (basically, just the ACPI debugging enabled so we can get a better 
trace).

So, for reference, this is the DSDT we're working with:
http://files.strangeworlds.co.uk/5040.dsl

WMCA(1, 3, NULL):
[23375.726016] ACPI Error (evregion-0316): No handler for Region
[RAM_] (ffff81000132d1a0) [EmbeddedControl] [20070126]
[23375.726246] ACPI Error (exfldio-0289): Region EmbeddedControl(3)
has no handler [20070126]
[23375.726475] ACPI Exception (dswexec-0462): AE_NOT_EXIST, While
resolving operands for [Store] [20070126]
[23375.726708] ACPI Error (psparse-0537): Method parse/execution
failed [\_SB_.AMW0.WMCA] (Node ffff8100013315f0), AE_NOT_EXIST

WMCA(1, 6, BUF(4 bytes) = 1):
[23444.490213] ACPI Error (evregion-0316): No handler for Region
[RAM_] (ffff81000132d1a0) [EmbeddedControl] [20070126]
[23444.490218] ACPI Error (exfldio-0289): Region EmbeddedControl(3)
has no handler [20070126]
[23444.490223] ACPI Exception (dswexec-0462): AE_NOT_EXIST, While
resolving operands for [LGreater] [20070126]
[23444.490228] ACPI Error (psparse-0537): Method parse/execution
failed [\_SB_.AMW0.WMCA] (Node ffff8100013315f0), AE_NOT_EXIST
[23444.490263] acer_acpi:   In: 0x00000001

-Carlos
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E-Mail: carlos@strangeworlds.co.uk
Web: strangeworlds.co.uk
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