It's not that simple... Here is relevant part of dmesg from my thinkpad:
------------------------------------------------------------------------
ACPI Error (evregion-0315): No handler for Region [ECOR]
(ffff8800bf814558) [EmbeddedControl] [20080926]
ACPI Error (exfldio-0291): Region EmbeddedControl(3) has no handler
[20080926]
ACPI Error (psparse-0524): Method parse/execution failed
[\_SB_.PCI0.LPC_.EC__._INI] (Node ffff8800bf817300), AE_NOT_EXIST
ACPI: EC: EC description table is found, configuring boot EC
ACPI: Interpreter enabled
ACPI: (supports S0 S3 S5)
ACPI: Using IOAPIC for interrupt routing
ACPI: EC: non-query interrupt received, switching to interrupt mode
ACPI: EC: GPE = 0x1c, I/O: command/status = 0x66, data = 0x62
ACPI: EC: driver started in interrupt mode
--------------------------------------------------------------------------
Any other suggestions?
Regards,
Alex.
Alexey Starikovskiy wrote:
Zhao Yakui wrote:
On Mon, 2008-12-15 at 11:51 +0800, Lin Ming wrote:
http://bugzilla.kernel.org/show_bug.cgi?id=11884
Method(\_SB._INI)
{
//initialize package CUZO
}
Method(\_SB_.PCI0.LPCB.EC0_._REG)
{
//access package CUZO
}
For this machine, \_SB._INI must be run before
\_SB_.PCI0.LPCB.EC0_._REG
But currently early EC _REG method is run before _INI as below
acpi_bus_init shows.
void __init acpi_bus_init(void)
.....
status = acpi_ec_ecdt_probe();
/* Ignore result. Not having an ECDT is not fatal. */
status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
.....
}
acpi_ec_ecdt_probe will install ec handler although no ECDT found
in this machine.
Alexey, How about that if there's no ECDT found, we do not install
ec handler before acpi_initialize_objects?
I do some test with the help of KVM. In my test the ECDT table is
defined. And there also exists the EC device in DSDT table.Of course
there exists the _INI/_REG object under the scope of EC device. Under
the scope of \_SB.PCI0 there exists the _INI/_REG object.
From the test result it seems that all the _INI objects are evaluated
before _REG object even when there exists the ECDT table.
Hi, Alexey
Can the Lin Ming's proposal be considered based on the above test?
Hi Yakui,
His proposal needs to be considered even without your test (but the
test itself is quite helpful), just because HP does not violate the
ACPI spec, but ASUS notebooks without ECDT do violate it (and fake
ECDT workaround is there for them).
Thanks,
Alex.
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
