[PATCH net-next 1/7] net: dsa: hide dsa_uses_tagged_protocol code

[Vivien Didelot]

Hide the implementation of dsa_uses_tagged_protocol in dsa.c since this
helper will be extended to access the opaque dsa_device_ops structure.

At the same time, fix the checkpatch comparison check:

    CHECK: Comparison to NULL could be written "dst->rcv"
    #41: FILE: net/dsa/dsa.c:32:
    +   return dst->rcv != NULL;

Signed-off-by: Vivien Didelot <vivien.dide...@savoirfairelinux.com>
---
 include/net/dsa.h | 5 +----
 net/dsa/dsa.c     | 5 +++++
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index c0e567c0c824..cb5d668b265d 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -464,10 +464,7 @@ struct mii_bus *dsa_host_dev_to_mii_bus(struct device 
*dev);
 
 struct net_device *dsa_dev_to_net_device(struct device *dev);
 
-static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
-{
-       return dst->rcv != NULL;
-}
+bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst);
 
 static inline bool netdev_uses_dsa(struct net_device *dev)
 {
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 3288a80d4d6c..7a8a0358299b 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -27,6 +27,11 @@
 
 #include "dsa_priv.h"
 
+bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
+{
+       return !!dst->rcv;
+}
+
 static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb,
                                            struct net_device *dev)
 {
-- 
2.13.0