linux-kernel - [PATCH v2 2/9] drivers: staging: rtl8187se: refactor/clean signal smoothing

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Date:	Tue,  4 Mar 2014 00:12:50 -0700
From:	Axel Rasmussen <axel.rasmussen1@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Subject: [PATCH v2 2/9] drivers: staging: rtl8187se: refactor/clean signal smoothing

Signed-off-by: Axel Rasmussen <axel.rasmussen1@...il.com>
---
 drivers/staging/rtl8187se/r8180.h      |  2 +-
 drivers/staging/rtl8187se/r8180_core.c | 29 ++++++++++++++++++-----------
 2 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/rtl8187se/r8180.h b/drivers/staging/rtl8187se/r8180.h
index f81e6b5..5ac4673 100644
--- a/drivers/staging/rtl8187se/r8180.h
+++ b/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;
diff --git a/drivers/staging/rtl8187se/r8180_core.c b/drivers/staging/rtl8187se/r8180_core.c
index e5f8a56..67c2583 100644
--- a/drivers/staging/rtl8187se/r8180_core.c
+++ b/drivers/staging/rtl8187se/r8180_core.c
@@ -1143,23 +1143,30 @@ 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->UndecoratedSmoothedSS = smoothedSS;
+
+	smoothedRx = ((priv->UndecoratedSmoothedRxPower * 50) +
+			(priv->RxPower * 11)) / 60;
 
-	priv->UndercorateSmoothedRxPower = ((priv->UndercorateSmoothedRxPower * 50) +
-					    (priv->RxPower * 11)) / 60;
+	priv->UndecoratedSmoothedRxPower = smoothedRx;
 
 	if (bCckRate)
 		priv->CurCCKRSSI = priv->RSSI;
@@ -1399,8 +1406,8 @@ static void rtl8180_rx(struct net_device *dev)
 
 			/* For good-looking singal strength. */
 			SignalStrengthIndex = NetgearSignalStrengthTranslate(
-							priv->LastSignalStrengthInPercent,
-							priv->SignalStrength);
+				priv->LastSignalStrengthInPercent,
+				priv->SignalStrength);
 
 			priv->LastSignalStrengthInPercent = SignalStrengthIndex;
 			priv->Stats_SignalStrength = TranslateToDbm8185((u8)SignalStrengthIndex);
-- 
1.8.3.2

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