ACPI Warning: Converted Buffer to expected String

[Ulrich Spörlein]

Just FYI,

Dell Inspiron 8600c laptop, semi-recent CURRENT, latest BIOS (A14), machine
is 5 years old and producing these warnings when inserting a battery (or
booting with one inserted)

ACPI Warning for \\_SB_.BAT0._BIF: Converted Buffer to expected String at index 9 (20090903/nsrepair-215)
ACPI Warning for \\_SB_.BAT0._BIF: Converted Buffer to expected String at index 10 (20090903/nsrepair-215)
ACPI Warning for \\_SB_.BAT0._BIF: Converted Buffer to expected String at index 11 (20090903/nsrepair-215)
ACPI Warning for \\_SB_.BAT0._BIF: Converted Buffer to expected String at index 12 (20090903/nsrepair-215)

Everything works just before the ACPI import, there's also another bunch
of (harmless) errors during boot.

acpi0: <DELL CPi R  > on motherboard
acpi0: [ITHREAD]
acpi0: reservation of 0, 9fc00 (3) failed
acpi0: reservation of 100000, 3fef0000 (3) failed

This is just for reference, perhaps someone wants to know.

Cheers,
Uli