[PATCH v2] ath: use PRI value given by spec for fixed PRI
kvalo at qca.qualcomm.com
Sun Sep 27 05:53:15 PDT 2015
Peter Oh <poh at qca.qualcomm.com> writes:
> PRI value is used as divider when DFS detector analyzes candidate
> radar pulses.
> If PRI deviation is big from its origin PRI, DFS detector could miss
> valid radar reports since HW often misses detecting radar pulses and
> causes long interval value of pulses.
> For instance from practical results, if runtime PRI is calculated as
> 1431 for fixed PRI value of 1428 and delta timestamp logs 15719,
> the modular remainder will be 1409 and the delta between the remainder
> and runtime PRI is 22 that is bigger than PRI tolerance which is 16.
> As a result this radar report will be ignored even though it's valid.
> By using spec defined PRI for fixed PRI, we can correct this error.
> Signed-off-by: Peter Oh <poh at qca.qualcomm.com>
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