staging: rtl8192e: Remove function rtl92e_update_rx_pkt_timestamp()

mac_time and last_rx_desc_tsf are only used in
rtl92e_update_rx_pkt_timestamp(). Depending on a condition one is equal
to the other or vice versa. But since those are not used anywhere else
the function rtl92e_update_rx_pkt_timestamp() is just dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/89a21fa17b32d66e07514bfad5b604d5d4835e25.1700860759.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c

@@ -1673,8 +1673,6 @@ bool rtl92e_get_rx_stats(struct net_device *dev, struct rtllib_rx_stats *stats,
 	stats->TimeStampLow = pDrvInfo->TSFL;
 	stats->TimeStampHigh = rtl92e_readl(dev, TSFR + 4);
 
-	rtl92e_update_rx_pkt_timestamp(dev, stats);
-
 	if ((stats->RxBufShift + stats->RxDrvInfoSize) > 0)
 		stats->bShift = 1;
 

drivers/staging/rtl8192e/rtl8192e/rtl_core.c

@@ -1433,17 +1433,6 @@ void rtl92e_reset_desc_ring(struct net_device *dev)
 	spin_unlock_irqrestore(&priv->irq_th_lock, flags);
 }
 
-void rtl92e_update_rx_pkt_timestamp(struct net_device *dev,
-				    struct rtllib_rx_stats *stats)
-{
-	struct r8192_priv *priv = rtllib_priv(dev);
-
-	if (stats->bIsAMPDU && !stats->bFirstMPDU)
-		stats->mac_time = priv->last_rx_desc_tsf;
-	else
-		priv->last_rx_desc_tsf = stats->mac_time;
-}
-
 long rtl92e_translate_to_dbm(struct r8192_priv *priv, u8 signal_strength_index)
 {
 	long	signal_power;

drivers/staging/rtl8192e/rtl8192e/rtl_core.h

@@ -234,8 +234,6 @@ struct r8192_priv {
 	int		rxringcount;
 	u16		rxbuffersize;
 
-	u64 last_rx_desc_tsf;
-
 	u32 receive_config;
 	u8		retry_data;
 	u8		retry_rts;
@@ -391,8 +389,6 @@ void rtl92e_irq_enable(struct net_device *dev);
 void rtl92e_config_rate(struct net_device *dev, u16 *rate_config);
 void rtl92e_irq_disable(struct net_device *dev);
 
-void rtl92e_update_rx_pkt_timestamp(struct net_device *dev,
-				    struct rtllib_rx_stats *stats);
 long rtl92e_translate_to_dbm(struct r8192_priv *priv, u8 signal_strength_index);
 void rtl92e_update_rx_statistics(struct r8192_priv *priv,
 				 struct rtllib_rx_stats *pprevious_stats);

drivers/staging/rtl8192e/rtllib.h

@@ -471,7 +471,6 @@ enum _REG_PREAMBLE_MODE {
  *       any adverse affects.
  */
 struct rtllib_rx_stats {
-	u64 mac_time;
 	s8  rssi;
 	u8  signal;
 	u8  noise;