From: John W. Linville <linville@tuxdriver.com>
Date: Mon, 19 Sep 2011 19:42:31 +0000 (-0400)
Subject: Revert "ath9k: do not insert padding into tx buffers on AR9380+"
X-Git-Tag: firefly_0821_release~3680^2~4273^2~183^2~113
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=42cecc3465578e442b794851fd8802dcb85a192c;p=firefly-linux-kernel-4.4.55.git

Revert "ath9k: do not insert padding into tx buffers on AR9380+"

This reverts commit 4245d31347bdc99a608dc1d1cfe64e44aa3d1771.
---

diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 2c6aefad3728..a0cd51f28596 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -1017,8 +1017,6 @@ static void ath_tx_fill_desc(struct ath_softc *sc, struct ath_buf *bf,
 	while (bf) {
 		struct sk_buff *skb = bf->bf_mpdu;
 		struct ath_frame_info *fi = get_frame_info(skb);
-		struct ieee80211_hdr *hdr;
-		int padpos, padsize;
 
 		info.type = get_hw_packet_type(skb);
 		if (bf->bf_next)
@@ -1026,20 +1024,8 @@ static void ath_tx_fill_desc(struct ath_softc *sc, struct ath_buf *bf,
 		else
 			info.link = 0;
 
-		if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
-			hdr = (struct ieee80211_hdr *)skb->data;
-			padpos = ath9k_cmn_padpos(hdr->frame_control);
-			padsize = padpos & 3;
-
-			info.buf_addr[0] = bf->bf_buf_addr;
-			info.buf_len[0] = padpos + padsize;
-			info.buf_addr[1] = info.buf_addr[0] + padpos;
-			info.buf_len[1] = skb->len - padpos;
-		} else {
-			info.buf_addr[0] = bf->bf_buf_addr;
-			info.buf_len[0] = skb->len;
-		}
-
+		info.buf_addr[0] = bf->bf_buf_addr;
+		info.buf_len[0] = skb->len;
 		info.pkt_len = fi->framelen;
 		info.keyix = fi->keyix;
 		info.keytype = fi->keytype;
@@ -1892,17 +1878,15 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
 		hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
 	}
 
-	if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)) {
-		/* Add the padding after the header if this is not already done */
-		padpos = ath9k_cmn_padpos(hdr->frame_control);
-		padsize = padpos & 3;
-		if (padsize && skb->len > padpos) {
-			if (skb_headroom(skb) < padsize)
-				return -ENOMEM;
+	/* Add the padding after the header if this is not already done */
+	padpos = ath9k_cmn_padpos(hdr->frame_control);
+	padsize = padpos & 3;
+	if (padsize && skb->len > padpos) {
+		if (skb_headroom(skb) < padsize)
+			return -ENOMEM;
 
-			skb_push(skb, padsize);
-			memmove(skb->data, skb->data + padsize, padpos);
-		}
+		skb_push(skb, padsize);
+		memmove(skb->data, skb->data + padsize, padpos);
 	}
 
 	if ((vif && vif->type != NL80211_IFTYPE_AP &&
@@ -1952,17 +1936,15 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
 		/* Frame was ACKed */
 		tx_info->flags |= IEEE80211_TX_STAT_ACK;
 
-	if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)) {
-		padpos = ath9k_cmn_padpos(hdr->frame_control);
-		padsize = padpos & 3;
-		if (padsize && skb->len>padpos+padsize) {
-			/*
-			 * Remove MAC header padding before giving the frame back to
-			 * mac80211.
-			 */
-			memmove(skb->data + padsize, skb->data, padpos);
-			skb_pull(skb, padsize);
-		}
+	padpos = ath9k_cmn_padpos(hdr->frame_control);
+	padsize = padpos & 3;
+	if (padsize && skb->len>padpos+padsize) {
+		/*
+		 * Remove MAC header padding before giving the frame back to
+		 * mac80211.
+		 */
+		memmove(skb->data + padsize, skb->data, padpos);
+		skb_pull(skb, padsize);
 	}
 
 	if (sc->ps_flags & PS_WAIT_FOR_TX_ACK) {