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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 460BFC33CB6 for ; Thu, 16 Jan 2020 17:04:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0E901207FF for ; Thu, 16 Jan 2020 17:04:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579194261; bh=S8X1xJcjW3hguFRJhdG5X+h1/mJOR68raBbkBr9FXsg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=dXCrY8s7gbhKj0KgZWpcOEGFbO+kvk9keddfFvwB6Hp81RI520NiEWm8lpRgE40l1 S2PWJG9C5mDKZoUYGV7PmbxRuCXAg3wPmyGcUJ12m4RwJeJ+9Ojx8IF4CYk14I9S+j ONLHHOBQ9r4HrsZQoD2vsytb856fUB5ZJUZ4a51o= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388476AbgAPRCq (ORCPT ); Thu, 16 Jan 2020 12:02:46 -0500 Received: from mail.kernel.org ([198.145.29.99]:56026 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388462AbgAPRCp (ORCPT ); Thu, 16 Jan 2020 12:02:45 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B8A912467C; Thu, 16 Jan 2020 17:02:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579194164; bh=S8X1xJcjW3hguFRJhdG5X+h1/mJOR68raBbkBr9FXsg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=icb+tahqhjSU/a2/rFRjxe/T4/9Ul0SvqRkFTEFwDxGNoXlb1Bmb/YRW21h1s2RcO mNK4E3SX/BKHJdNUvVlHy2TMyRMa3DqGnq0PHGOVfAXO2miLgbAgUwQId3EsLYK3Ph +vf1s/oY/ANiiqH+5I2/R/4QcJYcpbTA9GSoCOj0= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kangjie Lu , Sergei Shtylyov , Geert Uytterhoeven , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 245/671] net: sh_eth: fix a missing check of of_get_phy_mode Date: Thu, 16 Jan 2020 11:52:34 -0500 Message-Id: <20200116165940.10720-128-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116165940.10720-1-sashal@kernel.org> References: <20200116165940.10720-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Kangjie Lu [ Upstream commit 035a14e71f27eefa50087963b94cbdb3580d08bf ] of_get_phy_mode may fail and return a negative error code; the fix checks the return value of of_get_phy_mode and returns NULL of it fails. Fixes: b356e978e92f ("sh_eth: add device tree support") Signed-off-by: Kangjie Lu Reviewed-by: Sergei Shtylyov Reviewed-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/renesas/sh_eth.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 5e3e6e262ba3..f20290c72412 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -3129,12 +3129,16 @@ static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev) struct device_node *np = dev->of_node; struct sh_eth_plat_data *pdata; const char *mac_addr; + int ret; pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return NULL; - pdata->phy_interface = of_get_phy_mode(np); + ret = of_get_phy_mode(np); + if (ret < 0) + return NULL; + pdata->phy_interface = ret; mac_addr = of_get_mac_address(np); if (mac_addr) -- 2.20.1