linux-kernel - Re: [PATCH] ionic: Remove unnecessary ternary operator in ionic_debugfs_add

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Message-ID: <53a991df-fe1e-29b2-4af5-c1702e5dc626@pensando.io>
Date:   Tue, 17 Sep 2019 16:40:13 -0700
From:   Shannon Nelson <snelson@...sando.io>
To:     Nathan Chancellor <natechancellor@...il.com>,
        Pensando Drivers <drivers@...sando.io>,
        "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] ionic: Remove unnecessary ternary operator in
 ionic_debugfs_add_ident


On 9/17/19 4:26 PM, Nathan Chancellor wrote:
> clang warns:
>
> ../drivers/net/ethernet/pensando/ionic/ionic_debugfs.c:60:37: warning:
> expression result unused [-Wunused-value]
>                              ionic, &identity_fops) ? 0 : -EOPNOTSUPP;
>                                                           ^~~~~~~~~~~
> 1 warning generated.
>
> The return value of debugfs_create_file does not need to be checked [1]
> and the function returns void so get rid of the ternary operator, it is
> unnecessary.
>
> [1]: https://lore.kernel.org/linux-mm/20150815160730.GB25186@kroah.com/
>
> Fixes: fbfb8031533c ("ionic: Add hardware init and device commands")
> Link: https://github.com/ClangBuiltLinux/linux/issues/658
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>

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

> ---
>   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)