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Re: [PATCH 1/2] ath9k: recover the chip from tx/rx stuck

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On 02/01/2012 08:05 AM, Rajkumar Manoharan wrote:
In the following scenario, where the distance b/w STA and AP is ~10m
or in a shield environment by placing an attenuator with reduced AP
txpower, the station started reporting with beacon loss and got
disconnected whenever the chariot endpoint was initiated with BiDi
traffic. In such state, two different stuck cases were observed.

   * rx clear is stuck at low for more than 100ms
   * dcu chain and complete state is stuck.

This patch detects the stuck state if the beacons are not received for
more than 300ms. In the above matching conditions, trigger a chip
reset to recover. This issue was originally reported in 3.0 kernel with
AR9382 chip by having two stations associated with two different APs in
the same channel and was attenuated/controlled by Azimuth ADEPT-n box.

Can't the AP be configured for larger beacon intervals?  Maybe have it
be some multiple of that instead of a fixed 300ms?

Thanks,
Ben

--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc  http://www.candelatech.com

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