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PR 619/bsps * mpc6xx/clock/c_clock.c: The PPC decrementer must be reloaded on each clock tick. Currently, this is done by just reloading a fixed value. The attached patch takes into account the time that elapsed since the decrementer crossed zero in order to adjust the value to be re-loaded. Without the patch, the effective system clock cycle is increased by the exception handler latency.