linux-kernel - Re: [PATCH] staging: fwserial: replace 'a' with '(a)' to avoid precedence issues

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Message-ID: <20170214180845.GA8426@kroah.com>
Date:   Tue, 14 Feb 2017 10:08:45 -0800
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Arushi Singhal <arushisinghal19971997@...il.com>
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: fwserial: replace 'a' with '(a)' to avoid
 precedence issues

On Tue, Feb 14, 2017 at 11:26:20PM +0530, Arushi Singhal wrote:
> Macro argument 'a' may be better as '(a)' to avoid precedence issues as
> reported by checkpatch.pl
> 
> Signed-off-by: Arushi Singhal <arushisinghal19971997@...il.com>
> ---
>  drivers/staging/fwserial/fwserial.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c
> index 41a49c8194e5..bdfc0a8c7af3 100644
> --- a/drivers/staging/fwserial/fwserial.c
> +++ b/drivers/staging/fwserial/fwserial.c
> @@ -98,7 +98,7 @@ struct fwtty_transaction {
>  	};
>  };
>  
> -#define to_device(a, b)			(a->b)
> +#define to_device((a), b)			(a->b)

Really?  Why do we even have this macro at all?  Can it just be removed?

thanks,

greg k-h