[RESEND PATCH] staging: rtl8192e: Fix return type for implementation of ndo_start_xmit

[RESEND PATCH] staging: rtl8192e: Fix return type for implementation of ndo_start_xmit

[GUO Zihua]

Since Linux now supports CFI, it will be a good idea to fix mismatched
return type for implementation of hooks. Otherwise this might get
cought out by CFI and cause a panic.

Use enums from netdev_tx_t as return value instead, then change return
type to netdev_tx_t. Note that rtllib_xmit_inter() would return 1 only
on allocation failure and the queue is stopped if that happens, meeting
the documented requirement if NETDEV_TX_BUSY should be returned by
ndo_start_xmit.

Signed-off-by: GUO Zihua <guozihua@huawei.com>
---
 drivers/staging/rtl8192e/rtllib.h    | 2 +-
 drivers/staging/rtl8192e/rtllib_tx.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/rtl8192e/rtllib.h b/drivers/staging/rtl8192e/rtllib.h
index 0ecd81a81866..b4b606f552fb 100644
--- a/drivers/staging/rtl8192e/rtllib.h
+++ b/drivers/staging/rtl8192e/rtllib.h
@@ -1938,7 +1938,7 @@ int rtllib_encrypt_fragment(
 	struct sk_buff *frag,
 	int hdr_len);
 
-int rtllib_xmit(struct sk_buff *skb,  struct net_device *dev);
+netdev_tx_t rtllib_xmit(struct sk_buff *skb,  struct net_device *dev);
 void rtllib_txb_free(struct rtllib_txb *txb);
 
 /* rtllib_rx.c */
diff --git a/drivers/staging/rtl8192e/rtllib_tx.c b/drivers/staging/rtl8192e/rtllib_tx.c
index 42f81b23a144..9da83531932f 100644
--- a/drivers/staging/rtl8192e/rtllib_tx.c
+++ b/drivers/staging/rtl8192e/rtllib_tx.c
@@ -962,9 +962,9 @@ static int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
 
 }
 
-int rtllib_xmit(struct sk_buff *skb, struct net_device *dev)
+netdev_tx_t rtllib_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	memset(skb->cb, 0, sizeof(skb->cb));
-	return rtllib_xmit_inter(skb, dev);
+	return rtllib_xmit_inter(skb, dev) ? NETDEV_TX_BUSY : NETDEV_TX_OK;
 }
 EXPORT_SYMBOL(rtllib_xmit);
-- 
2.17.1