From nobody Fri Jun 19 11:01:29 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6F84C433EF for ; Mon, 4 Apr 2022 14:24:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377135AbiDDO0e (ORCPT ); Mon, 4 Apr 2022 10:26:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46122 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1377107AbiDDO03 (ORCPT ); Mon, 4 Apr 2022 10:26:29 -0400 Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECCEA33E82 for ; Mon, 4 Apr 2022 07:24:32 -0700 (PDT) Received: by mail-pg1-x532.google.com with SMTP id t4so8488731pgc.1 for ; Mon, 04 Apr 2022 07:24:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id; bh=Pt7hrdGVjbeZjOBpknKDovgV8m2sdxjtHmhHuyy54SA=; b=Ibxp+1UIhOCnKUdny+f1j8gRzydc/TreU0vWzbOhAGB3zG2v8l18+yu4aENjio/OUO U5HvjbAyzUeD6jZD8QiRah49VcAHJoW7S2ha4tG0SNKdTf8Q4tQBDudXHVlATctr0OB0 1d6g9fSHGlRHsSzsLyAEkAXQ6GhtboHwmN93lmFzTw+oPHfApgOtuOAvzYZ3PdoUNDAr z7X+RmSYpXLQgqIOxMLDcJvmaFuWHvL2y5ctWeAJtjZGqCo1Fkk+msCsLJ57/Ev9uRpL E6ebqmlHE4dz6LfHFleG44IcGP5+lZNEOn6rp+hf7dZ20a3bMmXCQpedLwZTv3702SuF kh9Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=Pt7hrdGVjbeZjOBpknKDovgV8m2sdxjtHmhHuyy54SA=; b=zHeAp9YOYQ4tZ4jiRdy45PlNVdyq+tu+xe1xbr592PTtP5W6/PeSLZOt7WX87eXcu3 pqoK4mDIfYR9qpwMFY/x6NMQ0GAkXmcknTOjzfbVwg076Bogxc7FyY7kPhXfeM2DNIcQ wzdSez4+JK8zM5pNrDBrBhAsthsnsOk5qFTw8MrOwN9P+VEppOf+yxBUWg09gXXIeX0+ uN0a1oxhCgVPvQdqxRWoJEssOjGS0AfOVN3ZfcwM0aq910g5Lndn3pJTUhVJatFB0Zyb 9kMa+8HTGzdFIaUZBxYlcwO2i9mq+YXlllK+lkFcm10DlYqjlJViUQ/WXgu6VW6OBV8/ poRg== X-Gm-Message-State: AOAM530hABYSh7O0yJijvnUcLbBcLHTl/7rg68OPf0mKp2PmFrJGljJK eaL+9SjYUozUDSmLZxIkCy0= X-Google-Smtp-Source: ABdhPJzcpSKZIQN1bpipplS8MHxtv1HBy+Tf1pQY65MHBC1+O6gQM1dyk2JubkRCefhsocGp409b9w== X-Received: by 2002:a63:ad45:0:b0:382:2459:5bc6 with SMTP id y5-20020a63ad45000000b0038224595bc6mr123838pgo.474.1649082272439; Mon, 04 Apr 2022 07:24:32 -0700 (PDT) Received: from localhost.localdomain ([159.226.95.43]) by smtp.googlemail.com with ESMTPSA id f21-20020a056a00239500b004fb02a7a45bsm12513182pfc.214.2022.04.04.07.24.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Apr 2022 07:24:32 -0700 (PDT) From: Miaoqian Lin To: Stuart Yoder , Laurentiu Tudor , Makarand Pawagi , Diana Craciun , Catalin Marinas , linux-kernel@vger.kernel.org Cc: linmq006@gmail.com Subject: [PATCH] bus: fsl-mc: Check the platform_get_resource() return value Date: Mon, 4 Apr 2022 14:24:26 +0000 Message-Id: <20220404142427.11418-1-linmq006@gmail.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" platform_get_resource() may fail and return NULL, so check it's value before using it. Fixes: 6305166c8771 ("bus: fsl-mc: Add ACPI support for fsl-mc") Signed-off-by: Miaoqian Lin --- drivers/bus/fsl-mc/fsl-mc-bus.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bu= s.c index 8fd4a356a86e..ab520b4ce885 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -1168,6 +1168,9 @@ static int fsl_mc_bus_probe(struct platform_device *p= dev) * Get physical address of MC portal for the root DPRC: */ plat_res =3D platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!plat_res) + return -EINVAL; + mc_portal_phys_addr =3D plat_res->start; mc_portal_size =3D resource_size(plat_res); mc_portal_base_phys_addr =3D mc_portal_phys_addr & ~0x3ffffff; --=20 2.17.1