From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f176.google.com (mail-oi1-f176.google.com [209.85.167.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B80C5A57 for ; Mon, 20 Jun 2022 14:05:19 +0000 (UTC) Received: by mail-oi1-f176.google.com with SMTP id k24so13759712oij.2 for ; Mon, 20 Jun 2022 07:05:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:message-id:date:mime-version:user-agent:subject :content-language:to:references:from:in-reply-to :content-transfer-encoding; bh=vXVWDTnjO5iC5dEoRI4X2EQajSgnoxnE0S9FMk/nHYU=; b=NbkOEcR0dzXkLTMiHTHvNRRd4rEdnU+Lu1co9BuL9idLgD9YJn57kxjahkLCi9nA4g ePESFqVcfoiS0stnNjRdsQYtu4OG2a9egIevdIN3qIiqIWPzPYKMCxg2jrEcoC2s+Be0 sbFTl2vTUH30+60YCoRRzEe6PvmKKWbGTBedUaELE86637ZFnGqQ96nUExzsGH1P7crr a7QViE8xQXkevkISzpgAM7Zr5Eo1GEiUPNbJ8fBMhnRCc7wjsvlOv3ag7cuO7unPOc9K pN6ELKTqquaA5tSGDWBW3v4jSCjQe46zyg+4RL+is6/yhPWw/dZqrx9wn9MpX+nZNSXd T6PQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:message-id:date:mime-version:user-agent :subject:content-language:to:references:from:in-reply-to :content-transfer-encoding; bh=vXVWDTnjO5iC5dEoRI4X2EQajSgnoxnE0S9FMk/nHYU=; b=OS+CKIbCBGFrNYCo+dI6UwVijAjoS7BYLn6SXlWTczA3+a96SMFXdejs24v/SDRBcX CbgP84gx3Vnfi59zS3RTv6giVIYdT3igcuy/HGhU5KFCZ1ucvTHDeyK7JvuD4dn1fz0f eey9ckKpt0q0aX1YO716PslBRMqf+mAS7+I5wJCDGnudRpCpwZ1eNoUqWfpSncvsT018 gKKhGI75+PSVKkqYmU42dbljokCK2htENmTZRZM9mVP2EoHM4pEhqlDhOMcSwIE5WdzX LrpbBPY7MJC9xKGYdgmu1UbOdBXe8qBbsSi2Fr/UP5H33RzzweyByZfAAMNMHB4sNCnP vOJA== X-Gm-Message-State: AOAM531qIb9YC2mpZZ7WtVH0ZUhR4ZT6xeQMVFL38IDc5HHLEqIOmbEk e9FD2xXgJHUXbPU7RFc5b+s= X-Google-Smtp-Source: ABdhPJyofx0pIxDjkceVGFBbyDpm8AtEBzdR6BLYffZCMarobpN+BC08EpFVKQirxsz+dDA0pi28JQ== X-Received: by 2002:a05:6808:1989:b0:32e:9e58:7733 with SMTP id bj9-20020a056808198900b0032e9e587733mr15579850oib.270.1655733918795; Mon, 20 Jun 2022 07:05:18 -0700 (PDT) Received: from [192.168.1.108] ([216.130.59.33]) by smtp.gmail.com with ESMTPSA id r23-20020a056830419700b0060c03836d04sm7651254otu.77.2022.06.20.07.05.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 20 Jun 2022 07:05:18 -0700 (PDT) Sender: Larry Finger Message-ID: <5396e576-0fbe-430c-d983-a2f4b1569f09@lwfinger.net> Date: Mon, 20 Jun 2022 09:05:17 -0500 Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [PATCH v1] staging: r8188eu: an incorrect return value made the function always return fail Content-Language: en-US To: Kate Hsuan , Hans de Goede , Phillip Potter , Greg Kroah-Hartman , Michael Straube , "Fabio M . De Francesco" , linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org References: <20220620085413.948265-1-hpa@redhat.com> From: Larry Finger In-Reply-To: <20220620085413.948265-1-hpa@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 6/20/22 03:54, Kate Hsuan wrote: > Since _SUCCESS (1) and _FAIL (0) are used to indicate the status of the > functions. The previous commit 8ae7bf782eacad803f752c83a183393b0a67127b > fixed and prevented dereferencing a NULL pointer through checking the > return pointer. The NULL pointer check work properly but the return > values (-ENOMEM on fail and 0 on success). This work fixed the return > values to make sure the caller function will return the correct status. > > BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=2097526 > Signed-off-by: Kate Hsuan > --- > drivers/staging/r8188eu/core/rtw_xmit.c | 8 +++----- > 1 file changed, 3 insertions(+), 5 deletions(-) > > diff --git a/drivers/staging/r8188eu/core/rtw_xmit.c b/drivers/staging/r8188eu/core/rtw_xmit.c > index f4e9f6102539..2f8720db21d9 100644 > --- a/drivers/staging/r8188eu/core/rtw_xmit.c > +++ b/drivers/staging/r8188eu/core/rtw_xmit.c > @@ -180,10 +180,8 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter) > pxmitpriv->free_xmit_extbuf_cnt = num_xmit_extbuf; > > res = rtw_alloc_hwxmits(padapter); > - if (res) { > - res = _FAIL; > + if (res == _FAIL) > goto exit; > - } > > rtw_init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry); > This problem was fixed in mid May with commit 5b7419ae1d20 ("staging: r8188eu: fix rtw_alloc_hwxmits error detection for now"). The fix was @@ -178,8 +178,7 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter) pxmitpriv->free_xmit_extbuf_cnt = num_xmit_extbuf; - res = rtw_alloc_hwxmits(padapter); - if (res) { + if (rtw_alloc_hwxmits(padapter)) { res = _FAIL; goto exit; } The "for now" part is that Phillip plans to get rid of _FAIL and _SUCCESS, and replace the logic with a normal 1 for fail, etc.; however, this will be a major change that must be done carefully. In any case NACK for this patch. Larry