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=ham 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 3A7FCC33CB3 for ; Thu, 16 Jan 2020 17:37:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 07F70246DD for ; Thu, 16 Jan 2020 17:37:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579196277; bh=CoU9mfn6JpZ2Lmi3xaNgldVIo9L2bmErfOKLD4D/kuI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=PXXmrbjSnpDf329NeYhEg8QNHfImrYPRk/KUGuSn0DZJm2h0s9qvRNRCBGWbUCu4x lfP41FdUeZ5bOqniOYGt14hkcZXXtBx4RqNL0WCYxGbUqo+awgg0D4pU8GTD7KLsiT 9Ig3t3AW4Ocf5mOzgf7L5IpdjbRtLNV9kzFMkxmg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393226AbgAPRhz (ORCPT ); Thu, 16 Jan 2020 12:37:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:53546 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393220AbgAPRhy (ORCPT ); Thu, 16 Jan 2020 12:37:54 -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 4E60B246DD; Thu, 16 Jan 2020 17:37:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579196274; bh=CoU9mfn6JpZ2Lmi3xaNgldVIo9L2bmErfOKLD4D/kuI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aPoA/XRHRBl9FOhLa9u30NOZ0PL9isO9sSZCMYPhZCrfhDk+RbO+83tHw0nDhv0dQ PCTBalZOFp1GLmp8uaahshbND1VWB8q2IKABWA2SBme14Z/WS1HoTVR7ui+5gWuHrT A1yQqUGWZmzAofh1/j80crxTPJu2/MsrVB4pBkas= 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 4.9 095/251] net: sh_eth: fix a missing check of of_get_phy_mode Date: Thu, 16 Jan 2020 12:34:04 -0500 Message-Id: <20200116173641.22137-55-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116173641.22137-1-sashal@kernel.org> References: <20200116173641.22137-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@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 49300194d3f9..6f8d4810ce97 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -2929,12 +2929,16 @@ 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