linux-kernel - [PATCH] staging/rtl8192u: add endianness conversions

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Date:   Thu, 26 Jan 2017 20:22:00 +0100
From:   Colin Vidal <colin@...dal.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Salah Triki <salah.triki@....org>,
        Bhumika Goyal <bhumirks@...il.com>,
        Amitoj Kaur Chawla <amitoj1606@...il.com>,
        Bhaktipriya Shridhar <bhaktipriya96@...il.com>,
        Binoy Jayan <binoy.jayan@...aro.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Cc:     Colin Vidal <colin@...dal.org>
Subject: [PATCH] staging/rtl8192u: add endianness conversions

Fields frag_size and playload_size of struct ieee80211_txb are encoded
as short little-endian. This patch adds conversions to / from cpu byte
order when copy / write these values in variables of architecture
independent byte order. It also avoid a sparse type warning.

Signed-off-by: Colin Vidal <colin@...dal.org>
---
 drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
index 1ab0aea..2b0e1b4 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
@@ -250,7 +250,7 @@ static struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size,
 
 	memset(txb, 0, sizeof(struct ieee80211_txb));
 	txb->nr_frags = nr_frags;
-	txb->frag_size = txb_size;
+	txb->frag_size = __cpu_to_le16(txb_size);
 
 	for (i = 0; i < nr_frags; i++) {
 		txb->fragments[i] = dev_alloc_skb(txb_size);
@@ -752,7 +752,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
 			goto failed;
 		}
 		txb->encrypted = encrypt;
-		txb->payload_size = bytes;
+		txb->payload_size = __cpu_to_le16(bytes);
 
 		//if (ieee->current_network.QoS_Enable)
 		if(qos_actived)
@@ -859,7 +859,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
 		}
 
 		txb->encrypted = 0;
-		txb->payload_size = skb->len;
+		txb->payload_size = __cpu_to_le16(skb->len);
 		memcpy(skb_put(txb->fragments[0],skb->len), skb->data, skb->len);
 	}
 
@@ -896,7 +896,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
 		}else{
 			if ((*ieee->hard_start_xmit)(txb, dev) == 0) {
 				stats->tx_packets++;
-				stats->tx_bytes += txb->payload_size;
+				stats->tx_bytes += __le16_to_cpu(txb->payload_size);
 				return 0;
 			}
 			ieee80211_txb_free(txb);
-- 
2.9.3