linux-kernel - Re: [Outreachy kernel] [PATCH] staging: rtl8723bs: Remove unused variable ret

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] [day] [month] [year] [list]

Date:   Thu, 14 Sep 2017 18:09:43 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Harsha Sharma <harshasharmaiitr@...il.com>
cc:     gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, outreachy-kernel@...glegroups.com
Subject: Re: [Outreachy kernel] [PATCH] staging: rtl8723bs: Remove unused
 variable ret



On Thu, 14 Sep 2017, Harsha Sharma wrote:

> Remove unused variable ret as it is not used anywhere.
> Remove multiple blank lines.
> Done using following coccinelle semantic patch
>
> @@
> type T;
> identifier i;
> constant C;
> @@
>
> (
> extern T i;
> |
> - T i;
>   <+... when != i
> - i = C;
>   ...+>
> )
>
> Signed-off-by: Harsha Sharma <harshasharmaiitr@...il.com>
> ---
>  drivers/staging/rtl8723bs/os_dep/ioctl_linux.c | 6 ------
>  1 file changed, 6 deletions(-)
>
> diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
> index ffbb35a..7935dc5 100644
> --- a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
> +++ b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
> @@ -2337,10 +2337,6 @@ static int rtw_wx_read32(struct net_device *dev,
>  	u32 data32;
>  	u32 bytes;
>  	u8 *ptmp;
> -	int ret;
> -
> -
> -	ret = 0;
>  	padapter = (struct adapter *)rtw_netdev_priv(dev);
>  	p = &wrqu->data;
>  	len = p->length;
> @@ -2352,7 +2348,6 @@ static int rtw_wx_read32(struct net_device *dev,
>  		return -ENOMEM;
>
>  	if (copy_from_user(ptmp, p->pointer, len)) {
> -		ret = -EFAULT;
>  		goto exit;
>  	}
>
> @@ -2375,7 +2370,6 @@ static int rtw_wx_read32(struct net_device *dev,
>  			break;
>  		default:
>  			DBG_871X(KERN_INFO "%s: usage> read [bytes],[address(hex)]\n", __func__);
> -			ret = -EINVAL;
>  			goto exit;

One could have the impression that the function should instead return ret.
One would have to figure out where the function is called from and what
happens there to the return value.

julia

>  	}
>  	DBG_871X(KERN_INFO "%s: addr = 0x%08X data =%s\n", __func__, addr, extra);
> --
> 1.9.1
>
> --
> You received this message because you are subscribed to the Google Groups "outreachy-kernel" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to outreachy-kernel+unsubscribe@...glegroups.com.
> To post to this group, send email to outreachy-kernel@...glegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/1505404910-11548-1-git-send-email-harshasharmaiitr%40gmail.com.
> For more options, visit https://groups.google.com/d/optout.
>