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Date:   Sat, 30 May 2020 18:10:46 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     olteanv@...il.com
Cc:     andrew@...n.ch, f.fainelli@...il.com, vivien.didelot@...il.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: dsa: sja1105: suppress
 -Wmissing-prototypes in sja1105_vl.c

From: Vladimir Oltean <olteanv@...il.com>
Date: Sat, 30 May 2020 17:03:22 +0300

> From: Vladimir Oltean <vladimir.oltean@....com>
> 
> Newer C compilers are complaining about the fact that there are no
> function prototypes in sja1105_vl.c for the non-static functions.
> Give them what they want.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>

This actually breaks the build on current net-next:

In file included from drivers/net/dsa/sja1105/sja1105_vl.c:6:
drivers/net/dsa/sja1105/sja1105_vl.h:11:11: warning: ‘struct sja1105_key’ declared inside parameter list will not be visible outside of this definition or declaration
   11 |    struct sja1105_key *key, unsigned long destports,
      |           ^~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.h:9:32: warning: ‘struct sja1105_private’ declared inside parameter list will not be visible outside of this definition or declaration
    9 | int sja1105_vl_redirect(struct sja1105_private *priv, int port,
      |                                ^~~~~~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.h:15:16: warning: ‘struct sja1105_rule’ declared inside parameter list will not be visible outside of this definition or declaration
   15 |         struct sja1105_rule *rule,
      |                ^~~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.h:14:30: warning: ‘struct sja1105_private’ declared inside parameter list will not be visible outside of this definition or declaration
   14 | int sja1105_vl_delete(struct sja1105_private *priv, int port,
      |                              ^~~~~~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.h:20:14: warning: ‘struct sja1105_key’ declared inside parameter list will not be visible outside of this definition or declaration
   20 |       struct sja1105_key *key, u32 index, s32 prio,
      |              ^~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.h:18:28: warning: ‘struct sja1105_private’ declared inside parameter list will not be visible outside of this definition or declaration
   18 | int sja1105_vl_gate(struct sja1105_private *priv, int port,
      |                            ^~~~~~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.h:25:15: warning: ‘struct sja1105_rule’ declared inside parameter list will not be visible outside of this definition or declaration
   25 |        struct sja1105_rule *rule, struct flow_stats *stats,
      |               ^~~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.h:24:29: warning: ‘struct sja1105_private’ declared inside parameter list will not be visible outside of this definition or declaration
   24 | int sja1105_vl_stats(struct sja1105_private *priv, int port,
      |                             ^~~~~~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.c:333:5: error: conflicting types for ‘sja1105_vl_redirect’
  333 | int sja1105_vl_redirect(struct sja1105_private *priv, int port,
      |     ^~~~~~~~~~~~~~~~~~~
In file included from drivers/net/dsa/sja1105/sja1105_vl.c:6:
drivers/net/dsa/sja1105/sja1105_vl.h:9:5: note: previous declaration of ‘sja1105_vl_redirect’ was here
    9 | int sja1105_vl_redirect(struct sja1105_private *priv, int port,
      |     ^~~~~~~~~~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.c:381:5: error: conflicting types for ‘sja1105_vl_delete’
  381 | int sja1105_vl_delete(struct sja1105_private *priv, int port,
      |     ^~~~~~~~~~~~~~~~~
In file included from drivers/net/dsa/sja1105/sja1105_vl.c:6:
drivers/net/dsa/sja1105/sja1105_vl.h:14:5: note: previous declaration of ‘sja1105_vl_delete’ was here
   14 | int sja1105_vl_delete(struct sja1105_private *priv, int port,
      |     ^~~~~~~~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.c:559:5: error: conflicting types for ‘sja1105_vl_gate’
  559 | int sja1105_vl_gate(struct sja1105_private *priv, int port,
      |     ^~~~~~~~~~~~~~~
In file included from drivers/net/dsa/sja1105/sja1105_vl.c:6:
drivers/net/dsa/sja1105/sja1105_vl.h:18:5: note: previous declaration of ‘sja1105_vl_gate’ was here
   18 | int sja1105_vl_gate(struct sja1105_private *priv, int port,
      |     ^~~~~~~~~~~~~~~
drivers/net/dsa/sja1105/sja1105_vl.c:743:5: error: conflicting types for ‘sja1105_vl_stats’
  743 | int sja1105_vl_stats(struct sja1105_private *priv, int port,
      |     ^~~~~~~~~~~~~~~~
In file included from drivers/net/dsa/sja1105/sja1105_vl.c:6:
drivers/net/dsa/sja1105/sja1105_vl.h:24:5: note: previous declaration of ‘sja1105_vl_stats’ was here
   24 | int sja1105_vl_stats(struct sja1105_private *priv, int port,
      |     ^~~~~~~~~~~~~~~~

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