http://bugzilla.kernel.org/show_bug.cgi?id=11884
------- Comment #41 from [EMAIL PROTECTED] 2008-11-25 23:52 -------
It seems that this issue is related with EC.
>From the acpidump we can know that there exists the error in evaluating the
_REG object of EC device, which causes that the EC device can't be initialized
correctly.
>[ 0.781695] ACPI Error (psparse-0530): Method parse/execution failed
[\_SB_.PCI0.LPCB.EC0_.ECRI] (Node ffff88013ba6b9d0), AE_AML_NO_RETURN_VALUE
>[ 0.781975] ACPI Error (psparse-0530): Method parse/execution failed
[\_SB_.PCI0.LPCB.EC0_._REG] (Node ffff88013ba6b9b0), AE_AML_NO_RETURN_VALUE
As the _REG object can't executed successfully, the EC GPE handler will be
uninstalled. But the ECRG flag is still set and the EC space handler isn't
uninstalled , which causes that the EC internal register will be accessed in
AML code.(ECRG flag is set in _REG object, which indicates that EC operation
region is already accessible).
>if (ACPI_FAILURE(status)) {
> acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
> return -ENODEV;
> }
In such case as the EC device is not initialized correctly, the following
warning message will be complained.
>[ 11.260018] ACPI: EC: acpi_ec_wait timeout, status = 0xff, event =
"b1=0"
>[ 11.260082] ACPI: EC: input buffer is not empty, aborting transaction
>[ 11.260147] ACPI Exception (evregion-0419): AE_TIME, Returned by
Handler for [EmbeddedControl] [20080609]
>[ 11.260314] ACPI Error (psparse-0530): Method parse/execution failed
[\_SB_.PCI0.LPCB.EC0_.BTIF] (Node ffff88013ba6db10), AE_TIME
>[ 11.260616] ACPI Error (psparse-0530): Method parse/execution failed
[\_SB_.BTIF] (Node ffff88013ba72f10), AE_TIME
Thanks.
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