adm8211: remove unnecessary protected bit mask/check

Removes now unused fc local var and uses the new ieee80211_hdrlen
which directly uses the le16 frame control value.
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/adm8211.c

@@ -1685,7 +1685,6 @@ static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
 static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 {
 	struct adm8211_tx_hdr *txhdr;
-	u16 fc;
 	size_t payload_len, hdrlen;
 	int plcp, dur, len, plcp_signal, short_preamble;
 	struct ieee80211_hdr *hdr;
@@ -1696,8 +1695,7 @@ static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 	plcp_signal = txrate->bitrate;
 
 	hdr = (struct ieee80211_hdr *)skb->data;
-	fc = le16_to_cpu(hdr->frame_control) & ~IEEE80211_FCTL_PROTECTED;
-	hdrlen = ieee80211_get_hdrlen(fc);
+	hdrlen = ieee80211_hdrlen(hdr->frame_control);
 	memcpy(skb->cb, skb->data, hdrlen);
 	hdr = (struct ieee80211_hdr *)skb->cb;
 	skb_pull(skb, hdrlen);
@@ -1711,8 +1709,6 @@ static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 	txhdr->frame_control = hdr->frame_control;
 
 	len = hdrlen + payload_len + FCS_LEN;
-	if (fc & IEEE80211_FCTL_PROTECTED)
-		len += 8;
 
 	txhdr->frag = cpu_to_le16(0x0FFF);
 	adm8211_calc_durations(&dur, &plcp, payload_len,
@@ -1730,9 +1726,6 @@ static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 	if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS)
 		txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
 
-	if (fc & IEEE80211_FCTL_PROTECTED)
-		txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_WEP_ENGINE);
-
 	txhdr->retry_limit = info->control.retry_limit;
 
 	adm8211_tx_raw(dev, skb, plcp_signal, hdrlen);