[NET]: Fix reversed error test in netif_tx_trylock

A non-zero return value indicates success from spin_trylock,
not error.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 76cc099c8580..75f02d8c6ed3 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -924,10 +924,10 @@ static inline void netif_tx_lock_bh(struct net_device *dev)
 
 static inline int netif_tx_trylock(struct net_device *dev)
 {
-        int err = spin_trylock(&dev->_xmit_lock);
-        if (!err)
+        int ok = spin_trylock(&dev->_xmit_lock);
+        if (likely(ok))
                 dev->xmit_lock_owner = smp_processor_id();
-        return err;
+        return ok;
 }
 
 static inline void netif_tx_unlock(struct net_device *dev)