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wlcore: do not report noise level in get survey op

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The get survey op expects the low level driver to report
the noise level for a a given channel.

The noise calculated in wlcore is (rssi-snr/2), but since
the snr reported by the FW is a derivative from the rssi
this calculation is useless, and should not be reported
to the user space.

Reporting incorrect noise, results in the wpa_supplicant
miscalculating the roaming candidate priority, thus causing
a situation where an AP with a lower rssi level would be
chosen over a better AP.

Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Yoni Divinsky 2012-06-13 18:56:54 +03:00 committed by Luciano Coelho
parent bf7c46a767
commit add779a073
1 changed files with 1 additions and 4 deletions
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5
drivers/net/wireless/ti/wlcore/main.c
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@ -4108,16 +4108,13 @@ static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw,
static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct wl1271 *wl = hw->priv;
struct ieee80211_conf *conf = &hw->conf;
if (idx != 0)
return -ENOENT;
survey->channel = conf->channel;
survey->filled = SURVEY_INFO_NOISE_DBM;
survey->noise = wl->noise;
survey->filled = 0;
return 0;
}