netdev - [PATCH net-next] r8169: fix ntohs/htons sparse warnings

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Date:   Mon, 1 Jul 2019 21:35:28 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Realtek linux nic maintainers <nic_swsd@...ltek.com>,
        David Miller <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next] r8169: fix ntohs/htons sparse warnings

Sparse complains about casting to/from restricted __be16. Fix this.

Fixes: 759d09574172 ("r8169: improve handling VLAN tag")
Reported-by: kbuild test robot <lkp@...el.com>
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/ethernet/realtek/r8169_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index a73f25321..450c74dc1 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -1528,7 +1528,7 @@ static int rtl8169_set_features(struct net_device *dev,
 static inline u32 rtl8169_tx_vlan_tag(struct sk_buff *skb)
 {
 	return (skb_vlan_tag_present(skb)) ?
-		TxVlanTag | htons(skb_vlan_tag_get(skb)) : 0x00;
+		TxVlanTag | (__force u16)htons(skb_vlan_tag_get(skb)) : 0x00;
 }
 
 static void rtl8169_rx_vlan_tag(struct RxDesc *desc, struct sk_buff *skb)
@@ -1537,7 +1537,7 @@ static void rtl8169_rx_vlan_tag(struct RxDesc *desc, struct sk_buff *skb)
 
 	if (opts2 & RxVlanTag)
 		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
-				       ntohs(opts2 & 0xffff));
+				       ntohs((__force __be16)(opts2 & 0xffff)));
 }
 
 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
-- 
2.22.0