drivers: staging: rtl8187se: refactor/clean signal smoothing

Signed-off-by: Axel Rasmussen <axel.rasmussen1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8187se/r8180.h

@@ -586,7 +586,7 @@ typedef struct r8180_priv {
 	/* High Power Mechanism. Added by amy, 080312. */
 	bool bToUpdateTxPwr;
 	long UndecoratedSmoothedSS;
-	long UndercorateSmoothedRxPower;
+	long UndecoratedSmoothedRxPower;
 	u8 RSSI;
 	char RxPower;
 	u8 InitialGain;

drivers/staging/rtl8187se/r8180_core.c

@@ -1143,24 +1143,31 @@ static long TranslateToDbm8185(u8 SignalStrengthIndex)
 /*
  * Perform signal smoothing for dynamic mechanism.
  * This is different with PerformSignalSmoothing8185 in smoothing formula.
- * No dramatic adjustion is apply because dynamic mechanism need some degree
- * of correctness. Ported from 8187B.
+ * No dramatic adjustment is applied because dynamic mechanism need some
+ * degree of correctness. Ported from 8187B.
  */
 static void PerformUndecoratedSignalSmoothing8185(struct r8180_priv *priv,
 						  bool bCckRate)
 {
-	/* Determin the current packet is CCK rate. */
+	long smoothedSS;
+	long smoothedRx;
+
+	/* Determine the current packet is CCK rate. */
 	priv->bCurCCKPkt = bCckRate;
 
+	smoothedSS = priv->SignalStrength * 10;
+
 	if (priv->UndecoratedSmoothedSS >= 0)
-		priv->UndecoratedSmoothedSS = ((priv->UndecoratedSmoothedSS * 5) +
-					       (priv->SignalStrength * 10)) / 6;
-	else
-		priv->UndecoratedSmoothedSS = priv->SignalStrength * 10;
+		smoothedSS = ((priv->UndecoratedSmoothedSS * 5) +
+				smoothedSS) / 6;
 
-	priv->UndercorateSmoothedRxPower = ((priv->UndercorateSmoothedRxPower * 50) +
+	priv->UndecoratedSmoothedSS = smoothedSS;
+
+	smoothedRx = ((priv->UndecoratedSmoothedRxPower * 50) +
 			(priv->RxPower * 11)) / 60;
 
+	priv->UndecoratedSmoothedRxPower = smoothedRx;
+
 	if (bCckRate)
 		priv->CurCCKRSSI = priv->RSSI;
 	else