[PATCH] ipw2200: remove the MAC timestamp present field from radiotap head

IEEE80211_RADIOTAP_TSFT is defined as the Value in microseconds of the
MAC's 64-bit 802.11 Time Synchronization Function timer when the first bit
of the MPDU arrived at the MAC. Since ipw2200 hardware doesn't provide this
value, we disable this feature from the radiotap header present flag.
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ipw2200.c

@@ -7640,7 +7640,6 @@ static void ipw_handle_data_packet_monitor(struct ipw_priv *priv,
 	/* Big bitfield of all the fields we provide in radiotap */
 	ipw_rt->rt_hdr.it_present =
 	    ((1 << IEEE80211_RADIOTAP_FLAGS) |
-	     (1 << IEEE80211_RADIOTAP_TSFT) |
 	     (1 << IEEE80211_RADIOTAP_RATE) |
 	     (1 << IEEE80211_RADIOTAP_CHANNEL) |
 	     (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
@@ -7649,6 +7648,7 @@ static void ipw_handle_data_packet_monitor(struct ipw_priv *priv,
 
 	/* Zero the flags, we'll add to them as we go */
 	ipw_rt->rt_flags = 0;
+	ipw_rt->rt_tsf = 0ULL;
 
 	/* Convert signal to DBM */
 	ipw_rt->rt_dbmsignal = antsignal;
@@ -7767,7 +7767,6 @@ static void ipw_handle_promiscuous_rx(struct ipw_priv *priv,
 	s8 noise = frame->noise;
 	u8 rate = frame->rate;
 	short len = le16_to_cpu(pkt->u.frame.length);
-	u64 tsf = 0;
 	struct sk_buff *skb;
 	int hdr_only = 0;
 	u16 filter = priv->prom_priv->filter;
@@ -7853,7 +7852,6 @@ static void ipw_handle_promiscuous_rx(struct ipw_priv *priv,
 	/* Big bitfield of all the fields we provide in radiotap */
 	ipw_rt->rt_hdr.it_present =
 	    ((1 << IEEE80211_RADIOTAP_FLAGS) |
-	     (1 << IEEE80211_RADIOTAP_TSFT) |
 	     (1 << IEEE80211_RADIOTAP_RATE) |
 	     (1 << IEEE80211_RADIOTAP_CHANNEL) |
 	     (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
@@ -7862,8 +7860,7 @@ static void ipw_handle_promiscuous_rx(struct ipw_priv *priv,
 
 	/* Zero the flags, we'll add to them as we go */
 	ipw_rt->rt_flags = 0;
-
-	ipw_rt->rt_tsf = tsf;
+	ipw_rt->rt_tsf = 0ULL;
 
 	/* Convert to DBM */
 	ipw_rt->rt_dbmsignal = signal;