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Commit 4282a5ba authored by Robert Greenwalt's avatar Robert Greenwalt
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Reintroduce wifi RssiApprox, reducing driver calls 

Only do the full signal strength calc when we need to, otherwise use
an approximate value.

This change was introduced a while back but was lost in some merge.

bug: 2125543
parent 32c687c2

wifi/java/android/net/wifi/WifiStateTracker.java

+1 −1
Original line number Diff line number Diff line
@@ -1350,7 +1350,7 @@ public class WifiStateTracker extends NetworkStateTracker { 
     */

    private synchronized void requestPolledInfo(WifiInfo info, boolean polling)

    {

        int newRssi = WifiNative.getRssiCommand();

        int newRssi = (polling ? WifiNative.getRssiApproxCommand() : WifiNative.getRssiCommand());

        if (newRssi != -1 && -200 < newRssi && newRssi < 256) { // screen out invalid values

            /* some implementations avoid negative values by adding 256

             * so we need to adjust for that here.