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Subject: Re: [PATCH] ionic: remove useless return code
To:     Arnd Bergmann <arnd@arndb.de>,
        Pensando Drivers <drivers@pensando.io>,
        "David S. Miller" <davem@davemloft.net>
Cc:     netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        clang-built-linux@googlegroups.com
References: <20190918195745.2158829-1-arnd@arndb.de>
From:   Shannon Nelson <snelson@pensando.io>
Message-ID: <6cdb1e21-44d9-bba9-1931-78f7109bff2b@pensando.io>
Date:   Wed, 18 Sep 2019 13:46:34 -0700
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On 9/18/19 12:57 PM, Arnd Bergmann wrote:
> The debugfs function was apparently changed from returning an error code
> to a void return, but the return code left in place, causing a warning
> from clang:
>
> drivers/net/ethernet/pensando/ionic/ionic_debugfs.c:60:37: error: expression result unused [-Werror,-Wunused-value]
>                              ionic, &identity_fops) ? 0 : -EOPNOTSUPP;
>                                                           ^~~~~~~~~~~
>
> Fixes: fbfb8031533c ("ionic: Add hardware init and device commands")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>   drivers/net/ethernet/pensando/ionic/ionic_debugfs.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c
> index 7afc4a365b75..bc03cecf80cc 100644
> --- a/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c
> +++ b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c
> @@ -57,7 +57,7 @@ DEFINE_SHOW_ATTRIBUTE(identity);
>   void ionic_debugfs_add_ident(struct ionic *ionic)
>   {
>   	debugfs_create_file("identity", 0400, ionic->dentry,
> -			    ionic, &identity_fops) ? 0 : -EOPNOTSUPP;
> +			    ionic, &identity_fops);
>   }
>   
>   void ionic_debugfs_add_sizes(struct ionic *ionic)

This has just recently been addressed by Nathan Chancellor 
<natechancellor@gmail.com>

Either way,

Acked-by: Shannon Nelson <snelson@pensando.io>

sln