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ATH5k - wrong RSSI measurement on CM9

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Dears,

In Linux 2.6.22 the RSSI was measured properly for CM9 device.

Afrer upgrading to 3.0.75, the RSSI measure is offseted. I even remember, that this 
problem has been introduced somewhere before 2.6.34.

You could look at the following chart:
   http://78.108.103.11/cgi-bin/rodga_1month_big.cgi
This is not signal drop, but a kernel change instead.

(the chart is generated by parsing of iwconfig output:
wlan1     IEEE 802.11abg  ESSID:"dvrmn.heaven-czfree.net"
          Mode:Managed  Frequency:5.64 GHz  Access Point: 00:27:22:64:C3:02
          Bit Rate=54 Mb/s   Tx-Power=8 dBm
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=36/70  Signal level=-74 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:20  Invalid misc:59452   Missed beacon:0)


I guess that this problem has been fixed one time and that there are two generations of 
CM9 devices that reports RSSI differently.

best regards
    Jara

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