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

From: Greg KH
Date: Tue Feb 14 2017 - 13:08:55 EST


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@xxxxxxxxx>
> ---
> 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