linux-kernel - Re: [PATCH] staging: r8188eu: core: remove goto statement

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Message-ID: <20211110184525.GM2001@kadam>
Date:   Wed, 10 Nov 2021 21:45:25 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Saurav Girepunje <saurav.girepunje@...il.com>
Cc:     Larry.Finger@...inger.net, phil@...lpotter.co.uk,
        gregkh@...uxfoundation.org, straube.linux@...il.com,
        martin@...ser.cx, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org, saurav.girepunje@...mail.com
Subject: Re: [PATCH] staging: r8188eu: core: remove goto statement

On Wed, Nov 10, 2021 at 11:47:15PM +0530, Saurav Girepunje wrote:
> Remove the goto statement from _rtw_init_recv_priv(). In this function goto
> can be replace by return statement. As on goto label exit, function
> only return it is not performing any cleanup. Avoiding goto will
> improve the function readability.
> 
> Signed-off-by: Saurav Girepunje <saurav.girepunje@...il.com>
> ---
>  drivers/staging/r8188eu/core/rtw_recv.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/staging/r8188eu/core/rtw_recv.c b/drivers/staging/r8188eu/core/rtw_recv.c
> index 51a13262a226..b38af76f3a67 100644
> --- a/drivers/staging/r8188eu/core/rtw_recv.c
> +++ b/drivers/staging/r8188eu/core/rtw_recv.c
> @@ -58,10 +58,8 @@ int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
> 
>  	precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(struct recv_frame) + RXFRAME_ALIGN_SZ);
> 
> -	if (!precvpriv->pallocated_frame_buf) {
> -		res = _FAIL;
> -		goto exit;
> -	}
> +	if (!precvpriv->pallocated_frame_buf)
> +		return _FAIL;


I hate pointless "goto exit;" labels, but there isn't a rule against
them and I feel like this is not a good enough patch on its own.  There
is so much other stuff wrong with this function.  It probably *should*
have some error handling for example.

I don't think this patch really adds enough value.  Take a look at the
function and almost every line can be improved...

regards,
dan carpenter