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Consecutive up/down interrupt-bit is set in the interrupt status register only if that interrupt was previously enabled. Thus enabling the already enabled interrupt doesn't do much for us. Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>