From patchwork Tue Aug 18 14:39:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yue Haibing X-Patchwork-Id: 11721291 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BF5E5109B for ; Tue, 18 Aug 2020 14:43:09 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 96885207DE for ; Tue, 18 Aug 2020 14:43:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="zlCwIT6m" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 96885207DE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=wIZ+Q2XPjy3JhYjDC1mdg6ertPPlBaoEYAPB+bs/2X8=; b=zlCwIT6mSI4VD7dsJz/mc9yqyS Fa1VwZw8H0wMPTQ3iNRtaSV3TEp9e2atBdsUqZFmGd0AVRkuvKQNol/NkxxtL3oee8UGG37tiBghn qv1dWMcTMS/RdncXCJzaGL/U37b8pCeqif3FerRabcITLGMzeOU/TaFgJ7r1GxFABJqxqffc3YFDg Nl6p/bSb4aCHxIe7WeLSb6jyTD0LvVvKk+2dKaDrb8Tcs19t7gg42Jy8LIhNdBmA08gMmwjTOw7JP 4T6h/lvcP+u3qUZpaKphbw09NdnzzuWhXaRM38bbYeu7mXCcVsO1574yokU2MiC7y3izGjsKPkZxw r2zOopOw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k82nz-0000rH-3K; Tue, 18 Aug 2020 14:41:39 +0000 Received: from szxga05-in.huawei.com ([45.249.212.191] helo=huawei.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k82nv-0000ms-I2 for linux-arm-kernel@lists.infradead.org; Tue, 18 Aug 2020 14:41:36 +0000 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 8D3A3CA22FF82614D1D8; Tue, 18 Aug 2020 22:41:18 +0800 (CST) Received: from localhost (10.174.179.108) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.487.0; Tue, 18 Aug 2020 22:41:08 +0800 From: YueHaibing To: , , , , , , Subject: [PATCH] net: stmmac: Fix signedness bug in stmmac_probe_config_dt() Date: Tue, 18 Aug 2020 22:39:52 +0800 Message-ID: <20200818143952.50752-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.179.108] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200818_104135_856955_5BD5A7B0 X-CRM114-Status: UNSURE ( 9.63 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.191 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4) [45.249.212.191 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: netdev@vger.kernel.org, YueHaibing , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The "plat->phy_interface" variable is an enum and in this context GCC will treat it as an unsigned int so the error handling is never triggered. Fixes: b9f0b2f634c0 ("net: stmmac: platform: fix probe for ACPI devices") Signed-off-by: YueHaibing --- drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index f32317fa75c8..b5b558b02e7d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -413,7 +413,7 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) } plat->phy_interface = device_get_phy_mode(&pdev->dev); - if (plat->phy_interface < 0) + if ((int)plat->phy_interface < 0) return ERR_PTR(plat->phy_interface); plat->interface = stmmac_of_get_mac_mode(np);