Some ACPI tables contain 0xffff'ed entries for "P-States". This is
obviously incorrect according to the ACPI specifications, nonetheless
it should "just work". So, simply ignore such invalid P-States instead
of aborting. Thanks to Frederik Reiss for testing (and fixing) this
patch.
Signed-off-by: Dominik Brodowski <linux@brodo.de>
Signed-off-by: Dave Jones <davej@redhat.com>