TickNumber from a known time source in the platform. If TickNumber of \r
ticks are detected, then EFI_SUCCESS is returned. The actual time passed \r
between entry of this function and the first tick is between 0 and \r
- TickPeriod 100 nS units. To guarantee that at least TickPeriod \r
+ TickPeriod 100 nS units. If you want to guarantee that at least TickPeriod \r
time has elapsed, wait for two ticks. This function waits for a hardware \r
event to determine when a tick occurs. It is possible for interrupt \r
processing, or exception processing to interrupt the execution of the \r