From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 527E6C433EF for ; Mon, 11 Oct 2021 17:32:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35CB060E78 for ; Mon, 11 Oct 2021 17:32:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231479AbhJKReP (ORCPT ); Mon, 11 Oct 2021 13:34:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229816AbhJKReO (ORCPT ); Mon, 11 Oct 2021 13:34:14 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE5C9C061570 for ; Mon, 11 Oct 2021 10:32:13 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id q10-20020a17090a1b0a00b001a076a59640so366881pjq.0 for ; Mon, 11 Oct 2021 10:32:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=+KsewVMapVnqjNR+FmWVZGUP3TdIM7SDkQ2+XhYe4P0=; b=UdH2GouGVsj4bLMhrkV4J4QokQTPkRsVIj19Ny4XVx5bodcgh8ZSUzu8c0KocL8s/z tEZLlcRNQgJj2t3GIV3zPoylE+xwzCXv3CdCXFotgBZY95lglheHFq+LZjY7/Kp7Sd8Y lR/oOSyxVNKCsPjZF5Wwh0q5B+lsGe7yargrOsx23cf1oEx2Zzzt6HYkIkwUOPTAzuJX veyXzCdD4YiJYpTpihXFKv3a4y9ScuPzfWfbwT2VP0NOb+pt9SJqqPLdaqJmicqP7aoc a7ytL28igF/w3rIaJ+WnXSGqZa8pXdQw4QtFDvjJyJ6Xgl9tnoGTz7tNUfBmYzWXcA8u qi3A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=+KsewVMapVnqjNR+FmWVZGUP3TdIM7SDkQ2+XhYe4P0=; b=7z6d1TwTyituE1z70Nuue1OkXyIhBadLfeeUhWsGAyprKcF6cZzl6WQsdZeYanJUtK kPVDOtDqUQw8tnUV3RlF1+ts3etaymUm6WlypQQzENGbTMPuo7S+gX3hiqL5SiUS/AJM 1F43h7c0ZIHWU+efdvO/LDk4cOHtFutEF3zQ8Cufisnhnx3kAQltG7GNZCM13UPj5XcT FwOTmuFK3wWebVlWJVnJRFtwGMFoJhKEDnpLxvbWfni/DoKpRHoL9cJtkBNRc0qHWCqN 3dyW9wc/UoZMsf7Ay/fiXWW4xZLcEKSPIS+SLEMaIXP/+ZDSbGvUUa90YTp+LtjOAwEa +s9Q== X-Gm-Message-State: AOAM531TWFdoJzQhGuSxgbdQvt+FJSL5jXwfOIuAHf9rszFIx+Spsq4D hJspfy0mWXHPTFrbSCCLHn17J1T33m4e8Q== X-Google-Smtp-Source: ABdhPJzMR1EoMqDfqoj1liajzybAJpHD3VNqw4qjhDRh4KQFXVfPn/a24QObYlSqmZyCZvdjl6/JSA== X-Received: by 2002:a17:902:760b:b0:13b:122:5ff0 with SMTP id k11-20020a170902760b00b0013b01225ff0mr25756599pll.22.1633973533266; Mon, 11 Oct 2021 10:32:13 -0700 (PDT) Received: from [192.168.1.14] ([223.230.99.151]) by smtp.gmail.com with ESMTPSA id e12sm9153728pgv.82.2021.10.11.10.32.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Oct 2021 10:32:12 -0700 (PDT) Message-ID: <71f1c0bc-08d1-7b0f-8000-e23a9bd88ba9@gmail.com> Date: Mon, 11 Oct 2021 23:02:08 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH v2] staging: rtl8723bs: os_dep: simplify the return statement. Content-Language: en-GB To: "Fabio M. De Francesco" , gregkh@linuxfoundation.org, fabioaiuto83@gmail.com, ross.schm.dev@gmail.com, marcocesati@gmail.com, insafonov@gmail.com, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Cc: saurav.girepunje@hotmail.com References: <2482197.HNbSr4JpUv@localhost.localdomain> From: Saurav Girepunje In-Reply-To: <2482197.HNbSr4JpUv@localhost.localdomain> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/10/21 2:24 pm, Fabio M. De Francesco wrote: > On Sunday, October 10, 2021 7:06:05 AM CEST Saurav Girepunje wrote: >> Remove the unneeded and redundant check of variable on goto out. >> Simplify the return using multiple goto label to avoid >> unneeded check. >> >> Signed-off-by: Saurav Girepunje >> --- >> >> ChangeLog V2: >> -Add goto out after the memcpy for no error case return with >> ret only. Free is not required on no error case. > > Please write versions logs that reflect clearly and unequivocally what you > changed between revisions and why. Subjects, Commit messages (Changelogs), > and Versions logs are the "specifics" of your work. There must be no > inconsistencies between these and the code or the history of the changes of > the code. > > You may think that I'm pedantic, but since I acked your patch, I don't want > to be misunderstood to be a promoter of approximate or clearly incorrect > messages> "Free is not required on no error case" conveys the message that you have > changed something that is not required but that is still potentially allowed. > > This is not the case because the problem that you fix with v2 is _not_ > something that is merely not required and unnecessary. You have fixed a bug > that is introduced in v1. Introducing bugs is not allowed. If you do > something that is not allowed you cannot simply say that it is not required. > My intension was to mention changes done on V2 with respect to V1. I will try to be more clear on changelog messages. >> >> ChangeLog V1: >> -Remove the unneeded and redundant check of variable on >> goto out. >> -Simplify the return using multiple goto label to avoid >> unneeded check. >> >> .../staging/rtl8723bs/os_dep/ioctl_cfg80211.c | 22 +++++++++---------- >> 1 file changed, 10 insertions(+), 12 deletions(-) >> >> diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c b/drivers/ > staging/rtl8723bs/os_dep/ioctl_cfg80211.c >> index 0868f56e2979..ae9579dc0848 100644 >> --- a/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c >> +++ b/drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c >> @@ -2312,7 +2312,7 @@ static int rtw_cfg80211_add_monitor_if(struct adapter > *padapter, char *name, str >> mon_wdev = rtw_zmalloc(sizeof(struct wireless_dev)); >> if (!mon_wdev) { >> ret = -ENOMEM; >> - goto out; >> + goto err_zmalloc; >> } >> >> mon_wdev->wiphy = padapter->rtw_wdev->wiphy; >> @@ -2322,23 +2322,21 @@ static int rtw_cfg80211_add_monitor_if(struct > adapter *padapter, char *name, str >> >> ret = cfg80211_register_netdevice(mon_ndev); >> if (ret) { >> - goto out; >> + goto err_register; >> } >> >> *ndev = pwdev_priv->pmon_ndev = mon_ndev; >> memcpy(pwdev_priv->ifname_mon, name, IFNAMSIZ+1); >> + goto out; >> >> -out: >> - if (ret && mon_wdev) { >> - kfree(mon_wdev); >> - mon_wdev = NULL; >> - } >> - >> - if (ret && mon_ndev) { >> - free_netdev(mon_ndev); >> - *ndev = mon_ndev = NULL; >> - } >> +err_register: >> + kfree(mon_wdev); >> + mon_wdev = NULL; > > Probably you have already read a message by Greg Kroah-Hartman that confirms > what I wrote in another message: "There is no need to set a local variable > like this to NULL.". > Yes, Agree this is another improvement possible on this function. > So please submit a v3. With the two changes requested above, my "acked-by" > tag is confirmed again. > > Thanks, > > Fabio > I will submit a v3. >> >> +err_zmalloc: >> + free_netdev(mon_ndev); >> + *ndev = mon_ndev = NULL; >> +out: >> return ret; >> } >> >> -- >> 2.32.0 >> >> >> > > > >