From 4282a5bad44b1b994a26a8eb02051f29f410d33a Mon Sep 17 00:00:00 2001
From: Robert Greenwalt <robdroid@android.com>
Date: Wed, 16 Sep 2009 17:17:16 -0700
Subject: [PATCH] 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
---
 wifi/java/android/net/wifi/WifiStateTracker.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wifi/java/android/net/wifi/WifiStateTracker.java b/wifi/java/android/net/wifi/WifiStateTracker.java
index 9a1140487ef7d..e3d8bf422b81e 100644
--- a/wifi/java/android/net/wifi/WifiStateTracker.java
+++ b/wifi/java/android/net/wifi/WifiStateTracker.java
@@ -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.