linux-kernel - Re: [PATCH 1/3] staging: rtl8723bs: remove unused variable ret in hal/sdio

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <YHQVKPOoGS3auAeQ@kroah.com>
Date:   Mon, 12 Apr 2021 11:38:48 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Fabio Aiuto <fabioaiuto83@...il.com>
Cc:     linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH 1/3] staging: rtl8723bs: remove unused variable ret in
 hal/sdio_halinit.c

On Sun, Apr 11, 2021 at 02:57:35PM +0200, Fabio Aiuto wrote:
> fix following compiler warning issue:
> 
>    drivers/staging/rtl8723bs/hal/sdio_halinit.c:
>  In function 'CardDisableRTL8723BSdio':
> >> drivers/staging/rtl8723bs/hal/sdio_halinit.c:881:5:
> warning: variable 'ret' set but not used [-Wunused-but-set-variable]
>      881 |  u8 ret = _FAIL;
>          |     ^~~
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Fabio Aiuto <fabioaiuto83@...il.com>
> ---
>  drivers/staging/rtl8723bs/hal/sdio_halinit.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/staging/rtl8723bs/hal/sdio_halinit.c b/drivers/staging/rtl8723bs/hal/sdio_halinit.c
> index 2098384efe92..936181a73d73 100644
> --- a/drivers/staging/rtl8723bs/hal/sdio_halinit.c
> +++ b/drivers/staging/rtl8723bs/hal/sdio_halinit.c
> @@ -878,10 +878,9 @@ static void CardDisableRTL8723BSdio(struct adapter *padapter)
>  {
>  	u8 u1bTmp;
>  	u8 bMacPwrCtrlOn;
> -	u8 ret = _FAIL;
>  
>  	/*  Run LPS WL RFOFF flow */
> -	ret = HalPwrSeqCmdParsing(padapter, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, rtl8723B_enter_lps_flow);
> +	HalPwrSeqCmdParsing(padapter, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, rtl8723B_enter_lps_flow);
>  
>  	/* 	==== Reset digital sequence   ====== */
>  
> @@ -909,9 +908,8 @@ static void CardDisableRTL8723BSdio(struct adapter *padapter)
>  	/* 	==== Reset digital sequence end ====== */
>  
>  	bMacPwrCtrlOn = false;	/*  Disable CMD53 R/W */
> -	ret = false;
>  	rtw_hal_set_hwreg(padapter, HW_VAR_APFM_ON_MAC, &bMacPwrCtrlOn);
> -	ret = HalPwrSeqCmdParsing(padapter, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, rtl8723B_card_disable_flow);
> +	HalPwrSeqCmdParsing(padapter, PWR_CUT_ALL_MSK, PWR_FAB_ALL_MSK, PWR_INTF_SDIO_MSK, rtl8723B_card_disable_flow);
>  }

Why isn't the return value being checked and returned to the caller if
something goes wrong?  Ignoring it feels wrong to me.

thanks,

greg k-h