linux-kernel - Re: [PATCH] dsa: tag_brcm: Fix build error without CONFIG_NET_DSA_TAG_BRCM

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Date:   Fri, 10 May 2019 14:26:53 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     vivien.didelot@...il.com, f.fainelli@...il.com,
        davem@...emloft.net, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH] dsa: tag_brcm: Fix build error without
 CONFIG_NET_DSA_TAG_BRCM_PREPEND

On Fri, May 10, 2019 at 11:00:28AM +0800, YueHaibing wrote:
> Fix gcc build error:
> 
> net/dsa/tag_brcm.c:211:16: error: brcm_prepend_netdev_ops undeclared here (not in a function); did you mean brcm_netdev_ops?
>  DSA_TAG_DRIVER(brcm_prepend_netdev_ops);
>                 ^
> ./include/net/dsa.h:708:10: note: in definition of macro DSA_TAG_DRIVER
>   .ops = &__ops,       \
>           ^~~~~
> ./include/net/dsa.h:701:36: warning: dsa_tag_driver_brcm_prepend_netdev_ops defined but not used [-Wunused-variable]
>  #define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops
>                                     ^
> ./include/net/dsa.h:707:30: note: in expansion of macro DSA_TAG_DRIVER_NAME
>  static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = {  \
>                               ^~~~~~~~~~~~~~~~~~~
> net/dsa/tag_brcm.c:211:1: note: in expansion of macro DSA_TAG_DRIVER
>  DSA_TAG_DRIVER(brcm_prepend_netdev_ops);
> 
> Like the CONFIG_NET_DSA_TAG_BRCM case,
> brcm_prepend_netdev_ops and DSA_TAG_PROTO_BRCM_PREPEND
> should be wrappeed by CONFIG_NET_DSA_TAG_BRCM_PREPEND.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Fixes: b74b70c44986 ("net: dsa: Support prepended Broadcom tag")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew