linux-kernel - Re: [Outreachy kernel] [PATCH] staging: rtl8723bs: Remove useless led_blink

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Message-ID: <20210414120039.GA1417@agape.jhs>
Date:   Wed, 14 Apr 2021 14:00:40 +0200
From:   Fabio Aiuto <fabioaiuto83@...il.com>
To:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Cc:     outreachy-kernel@...glegroups.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Matthew Wilcox <willy@...radead.org>,
        Julia Lawall <julia.lawall@...ia.fr>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [Outreachy kernel] [PATCH] staging: rtl8723bs: Remove useless
 led_blink_hdl()

On Wed, Apr 14, 2021 at 01:52:43PM +0200, Fabio M. De Francesco wrote:
> Removed the led_blink_hdl() function (declaration and definition).
> Declared dummy_function() in include/rtw_mlme_ext.h and defined it in
> core/rtw_cmd.c. Changed the second parameter of GEN_MLME_EXT_HANDLER
> macro to make use of dummy_function().
> 
> Reported-by: Julia Lawall <julia.lawall@...ia.fr>
> Suggested-by: Dan Carpenter <dan.carpenter@...cle.com>
> Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
> ---
>  drivers/staging/rtl8723bs/core/rtw_cmd.c         | 4 +++-
>  drivers/staging/rtl8723bs/core/rtw_mlme_ext.c    | 9 ---------
>  drivers/staging/rtl8723bs/include/rtw_mlme_ext.h | 3 ++-
>  3 files changed, 5 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/staging/rtl8723bs/core/rtw_cmd.c b/drivers/staging/rtl8723bs/core/rtw_cmd.c
> index 0297fbad7bce..7b6102a2bb2c 100644
> --- a/drivers/staging/rtl8723bs/core/rtw_cmd.c
> +++ b/drivers/staging/rtl8723bs/core/rtw_cmd.c
> @@ -87,6 +87,8 @@ static struct _cmd_callback rtw_cmd_callback[] = {
>  	{GEN_CMD_CODE(_RunInThreadCMD), NULL},/*64*/
>  };
>  
> +u8 dummy_functioni(struct adapter *var0, u8 *var1) { return 0; }
> +

I think that this won't compile

>  static struct cmd_hdl wlancmds[] = {
>  	GEN_DRV_CMD_HANDLER(0, NULL) /*0*/
>  	GEN_DRV_CMD_HANDLER(0, NULL)
> @@ -150,7 +152,7 @@ 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(sizeof(struct LedBlink_param), dummy_function) /*60*/
>  
>  	GEN_MLME_EXT_HANDLER(sizeof(struct SetChannelSwitch_param), set_csa_hdl) /*61*/
>  	GEN_MLME_EXT_HANDLER(sizeof(struct TDLSoption_param), tdls_hdl) /*62*/
> diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c b/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
> index 873d3792ac8e..963ea80083c8 100644
> --- a/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
> +++ b/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
> @@ -6189,15 +6189,6 @@ u8 set_chplan_hdl(struct adapter *padapter, unsigned char *pbuf)
>  	return	H2C_SUCCESS;
>  }
>  
> -u8 led_blink_hdl(struct adapter *padapter, unsigned char *pbuf)
> -{
> -
> -	if (!pbuf)
> -		return H2C_PARAMETERS_ERROR;
> -
> -	return	H2C_SUCCESS;
> -}
> -
>  u8 set_csa_hdl(struct adapter *padapter, unsigned char *pbuf)
>  {
>  	return	H2C_REJECTED;
> diff --git a/drivers/staging/rtl8723bs/include/rtw_mlme_ext.h b/drivers/staging/rtl8723bs/include/rtw_mlme_ext.h
> index 5e6cf63956b8..57977da78eb3 100644
> --- a/drivers/staging/rtl8723bs/include/rtw_mlme_ext.h
> +++ b/drivers/staging/rtl8723bs/include/rtw_mlme_ext.h
> @@ -745,11 +745,12 @@ u8 chk_bmc_sleepq_hdl(struct adapter *padapter, unsigned char *pbuf);
>  u8 tx_beacon_hdl(struct adapter *padapter, unsigned char *pbuf);
>  u8 set_ch_hdl(struct adapter *padapter, u8 *pbuf);
>  u8 set_chplan_hdl(struct adapter *padapter, unsigned char *pbuf);
> -u8 led_blink_hdl(struct adapter *padapter, unsigned char *pbuf);
>  u8 set_csa_hdl(struct adapter *padapter, unsigned char *pbuf);	/* Kurt: Handling DFS channel switch announcement ie. */
>  u8 tdls_hdl(struct adapter *padapter, unsigned char *pbuf);
>  u8 run_in_thread_hdl(struct adapter *padapter, u8 *pbuf);
>  
> +/* Dummy function used to fill elements of an array of function pointers */
> +u8 dummy_function(struct adapter *, u8 *);

here 'dummy_function' prototype is declared

>  
>  #define GEN_DRV_CMD_HANDLER(size, cmd)	{size, &cmd ## _hdl},
>  #define GEN_MLME_EXT_HANDLER(size, cmd)	{size, cmd},
> -- 
> 2.31.1
> 
> 

thank you,

fabio