http://bugzilla.kernel.org/show_bug.cgi?id=9399
[EMAIL PROTECTED] changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|[EMAIL PROTECTED] |[EMAIL PROTECTED]
Status|NEEDINFO |ASSIGNED
------- Comment #28 from [EMAIL PROTECTED] 2008-08-08 01:01 -------
Hi, Jan && Milo
The root cause is caused by the broken BIOS.
There exists ECDT table on your laptop. And from the ECDT table we can know
that the EC command/status address is 0x62 and EC data register address is
0x66.
At the same time there exists the register definition for the same EC
device in DSDT table. The data/command register definition is parsed from the
following object. The data register address is 0x62 and the command/status
address is 0x66.
>Name (_CRS, ResourceTemplate ()
{
IO (Decode16,
0x0062, // Range Minimum
0x0062, // Range Maximum
0x00, // Alignment
0x01, // Length
)
IO (Decode16,
0x0066, // Range Minimum
0x0066, // Range Maximum
0x00, // Alignment
0x01, // Length
)
})
Based on the above analysis it seems that the I/O register definition for
the same EC device is totally contradicted. In fact the definition in DSDT
table should be correct. It is an obvious BIOS bug. And in current kernel the
register definition in ECDT table is used for the initialization of EC device.
In such case it seems that EC device can't be initialized correctly.
IMO this bug had better be fixed by upgrading BIOS. And I will reject this
bug.
Of course if you can attach the output of dmidecode I will write a
workaround patch for you. But I won't push it into upstream kernel.
Thanks.
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.
-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
acpi-bugzilla mailing list
acpi-bugzilla@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
