Re: [Outreachy kernel] [PATCH] staging: rtl8723bs: Remove unnecessary parentheses

[Julia Lawall <julia.lawall@lip6.fr>]

On Thu, 28 Mar 2019, Payal Kshirsagar wrote:

> Challenge suggested by coccinelle
>
> This patch removes unnecessary parentheses while returning a value.
> Using following semantic patch:
>
> @@
> local idexpression id;
> @@
>
> - return(id);
> + return id;
>
> Signed-off-by: Payal Kshirsagar <payal.s.kshirsagar.98@gmail.c>
> ---
> diff -u -p a/os_dep/ioctl_linux.c b/os_dep/ioctl_linux.c
> --- a/os_dep/ioctl_linux.c
> +++ b/os_dep/ioctl_linux.c
> @@ -961,7 +961,7 @@ static int rtw_wx_set_pmkid(struct net_d
>          if (pPMK->cmd == IW_PMKSA_ADD) {
>                  DBG_871X("[rtw_wx_set_pmkid] IW_PMKSA_ADD!\n");
>                  if (!memcmp(strIssueBssid, strZeroMacAddress, ETH_ALEN))
> -                    return(intReturn);
> +                    return intReturn;
>                  else
>                      intReturn = true;
>
> @@ -1489,7 +1489,7 @@ exit:
>  	DBG_871X("DBG_IOCTL %s:%d return %d\n", __func__, __LINE__, ret);
>  	#endif
>
> -	return ret ;
> +	return ret;

There are two kinds of change: one drops parentheses and one drops a
space.  Both are good, but they should be in two separate patches.

The second one is because Coccinelle implicitly ignores parentheses,
unless you tell it not to, so it actually matches and repretty prints all
returns.  In the second case it caused a change.

julia

>
>  }
>
>
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