Let's assume cpuidle_ops exists but it doesn't implement the according
init callback, current arm_cpuidle_init() will return success to its
caller, but in fact it should return -EOPNOTSUPP.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>