9107e9d227e3b0893829baee4ac59feb874d4c23 introduced "score", and while it's actually not possible for it to be uninitialized (given the return values of ring_stuck()), the warning should be suppressed. It probably just needs a "default:" added to the switch statement.
drivers/gpu/drm/i915/i915_irq.c:1943:27: warning: ?score? may be used uninitialized in this function [-Wuninitialized] -Kees -- Kees Cook Chrome OS Security
