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 X-Spam-Level: X-Spam-Status: No, score=-15.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14E5AC4743F for ; Tue, 8 Jun 2021 15:05:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F09EB61287 for ; Tue, 8 Jun 2021 15:05:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233755AbhFHPHb (ORCPT ); Tue, 8 Jun 2021 11:07:31 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:37612 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233354AbhFHPH3 (ORCPT ); Tue, 8 Jun 2021 11:07:29 -0400 Received: from 1.general.cking.uk.vpn ([10.172.193.212]) by youngberry.canonical.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.93) (envelope-from ) id 1lqdIM-00044T-OR; Tue, 08 Jun 2021 15:05:34 +0000 Subject: NAK: [PATCH][next] net: usb: asix: ax88772: Fix less than zero comparison of a u16 From: Colin Ian King To: "David S . Miller" , Jakub Kicinski , Oleksij Rempel , linux-usb@vger.kernel.org, netdev@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org References: <20210608145823.159467-1-colin.king@canonical.com> Message-ID: <26127b07-6f9e-12bb-6d2e-edf6819c08f1@canonical.com> Date: Tue, 8 Jun 2021 16:05:33 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210608145823.159467-1-colin.king@canonical.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/06/2021 15:58, Colin King wrote: > From: Colin Ian King > > The comparison of the u16 priv->phy_addr < 0 is always false because > phy_addr is unsigned. Fix this by assigning the return from the call > to function asix_read_phy_addr to int ret and using this for the > less than zero error check comparison. > > Addresses-Coverity: ("Unsigned compared against 0") > Fixes: e532a096be0e ("net: usb: asix: ax88772: add phylib support") > Signed-off-by: Colin Ian King > --- > drivers/net/usb/asix_devices.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c > index 57dafb3262d9..211c5a87eb15 100644 > --- a/drivers/net/usb/asix_devices.c > +++ b/drivers/net/usb/asix_devices.c > @@ -704,9 +704,10 @@ static int ax88772_init_phy(struct usbnet *dev) > struct asix_common_private *priv = dev->driver_priv; > int ret; > > - priv->phy_addr = asix_read_phy_addr(dev, true); > - if (priv->phy_addr < 0) > + ret = asix_read_phy_addr(dev, true); > + if (ret < 0) > return priv->phy_addr; > + priv->phy_addr = ret; > > snprintf(priv->phy_name, sizeof(priv->phy_name), PHY_ID_FMT, > priv->mdio->id, priv->phy_addr); > Wrong commit message. I'll send a new fix. Colin