Adrian Chadd wrote: > What's _supposed_ to happen on channel change is this: > > * There's supposed to be an initial set of calibrations done, including NF; > * the time-adjusted noise floor history for that channel is written out; > * The last set ANI parameters for that channel are written out. > > The theory being that the NF and ANI results for a channel are channel > specific and not global. > > _However_ this may or may not be correct or working correctly. ANI > doesn't run for long enough during a channel scan to properly figure > out channel conditions. But on a very noisy channel, you may need some > specifically detuned parameters in order to receive successfully. I think there are bugs in the NF calibration code in ath9k. I see wild fluctuations in the signal level before and after nfcal happens, and this happens in all the chips I tested - AR9285, AR9485, AR9565. Since nfcal is triggered as part of the ANI calibration routine, this would cause issues. Sujith -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
