[ath9k-devel] Possible over driving AR9106, how to detect?

[Daniel Smith <viscous.liquid@gmail.com>]

Greetings,

I am running into a situation where I believe the RF front-end (AR9106) 
is being over driven. The configuration being used is a high-gain 
antenna with an inline LNA attached to a SparkLAN WMIA-199NI. The 
interface is put into monitor mode and set the fcsfail flag. The 
interface is brought up and after random periods of time we stop 
receiving frames. In the past this typically occurred at the same time 
as the DMA rx stop storm would occur. After all the fixes were put in 
place we still continued to see the issue. When the lock-up occurs there 
is no sign of activity on the card (e.g. frame counts, interrupt counts, 
etc in debugfs do not increase). This lock-up can be cleared by simple 
changing the channel or cycling the interface down and back up. One 
factor that seems to trigger this is when we run in the lab where the AP 
and station are within close proximity resulting in a signal strength of 
70dB.

I was wondering if there might be an interrupt that I could mask in or 
some other means to detect if the radio is in fact being over driven.

Thanks in advance!
V/r,
Daniel Smith