linux-kernel - Re: [Outreachy patch] [PATCH v3 1/2] staging: rtl8723bs: Remove useless led_blink

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Date:   Thu, 15 Apr 2021 08:19:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Cc:     outreachy-kernel@...glegroups.com, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Matthew Wilcox <willy@...radead.org>,
        Julia Lawall <julia.lawall@...ia.fr>,
        Fabio Aiuto <fabioaiuto83@...il.com>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [Outreachy patch] [PATCH v3 1/2] staging: rtl8723bs: Remove
 useless led_blink_hdl()

On Wed, Apr 14, 2021 at 09:27:49PM +0200, Fabio M. De Francesco wrote:
> Removed useless led_blink_hdl() prototype and definition. In wlancmds[]
> the slot #60 is now set to NULL using the macro GEN_MLME_EXT_HANDLER. This
> change has not unwanted side effects because the code in rtw_cmd.c checks
> if the function pointer is valid before using it.
> 
> Reported-by: Julia Lawall <julia.lawall@...ia.fr>
> Suggested-by: Matthew Wilcox <willy@...radead.org>
> Suggested-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
> ---
> 
> Changes from v2: no changes.
> Changes from v1: Corrected a bad solution to this issue that made use of
> an unnecessary dummy function.
> 
>  drivers/staging/rtl8723bs/core/rtw_cmd.c         | 2 +-
>  drivers/staging/rtl8723bs/core/rtw_mlme_ext.c    | 9 ---------
>  drivers/staging/rtl8723bs/include/rtw_mlme_ext.h | 1 -
>  3 files changed, 1 insertion(+), 11 deletions(-)
> 
> diff --git a/drivers/staging/rtl8723bs/core/rtw_cmd.c b/drivers/staging/rtl8723bs/core/rtw_cmd.c
> index 0297fbad7bce..f82dbd4f4c3d 100644
> --- a/drivers/staging/rtl8723bs/core/rtw_cmd.c
> +++ b/drivers/staging/rtl8723bs/core/rtw_cmd.c
> @@ -150,7 +150,7 @@ static struct cmd_hdl wlancmds[] = {
>  
>  	GEN_MLME_EXT_HANDLER(0, h2c_msg_hdl) /*58*/
>  	GEN_MLME_EXT_HANDLER(sizeof(struct SetChannelPlan_param), set_chplan_hdl) /*59*/
> -	GEN_MLME_EXT_HANDLER(sizeof(struct LedBlink_param), led_blink_hdl) /*60*/
> +	GEN_MLME_EXT_HANDLER(0, NULL) /*60*/

Do not do this "intermediate stage" type thing like this please.  This
should be one simple patch.  Again, look in the kernel archives for an
example of how to do this.

thanks,

greg k-h