drivers/platform/x86/thinkpad_acpi.c: don't test unsigned int for negativity
drivers/platform/x86/thinkpad_acpi.c: don't test unsigned int for negativity

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80231
Reported-by: David Binderman <b6d239d25020cc5e235b79047ed71f02d7363ad6@hotmail.com>
Signed-off-by: Andrey Utkin <261da76fe9d2fe2e8bdc22049270af0a9f189e33@gmail.com>
Signed-off-by: Matthew Garrett <d1dada306f6f6bc535ec5238317ee8d221588a1a@nebula.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs