From patchwork Tue May 30 23:36:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 13261212 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 0729EC77B73 for ; Tue, 30 May 2023 23:37:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233727AbjE3XhC (ORCPT ); Tue, 30 May 2023 19:37:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233029AbjE3XhA (ORCPT ); Tue, 30 May 2023 19:37:00 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 42652107; Tue, 30 May 2023 16:36:59 -0700 (PDT) Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 34UNGt45003635; Tue, 30 May 2023 23:36:51 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=qPSZiIgCFceFazehkUzE7aZRdYowN6+xUI+qlLpyzz8=; b=QFdikKn19y1Bv0kcIVdpWgiMHW8Ew/gVMOvFOwma0qLXYg5na9LTgY0h67youKn0/fFT P7iZxZ3fytdsH3Kg4avX2bc0iwQJ/khyNyG9Ou0XB+k5l61hLA7K2Cmxoz7S+cnCNvgV BNn4CIk+Q/WosVgvH3KgkBJfZvMdP/FPjhNhdslUM5hMJ8qqxw6rqTQnUmEz4HiKY6Ue 093CRFhkZjBNIX8KzYJn/FnCWXs54fQLuu9ParhBdiV+H14FFLFvHVdFHY5tIBOm514s WJX7ieqyBqmayUasmLelU5IZg7TDSL100ERi8Vtb//YuP2AotDQRwhR6he0xBOPnpIzc qA== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3qw8v4tbfq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 30 May 2023 23:36:50 +0000 Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 34UNaooJ014641 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 30 May 2023 23:36:50 GMT Received: from hu-bjorande-lv.qualcomm.com (10.49.16.6) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Tue, 30 May 2023 16:36:49 -0700 From: Bjorn Andersson To: Bjorn Andersson , Konrad Dybcio CC: Rob Herring , Krzysztof Kozlowski , Conor Dooley , , , Subject: [PATCH v2 3/3] soc: qcom: rtmfs: Handle reserved-memory allocation issues Date: Tue, 30 May 2023 16:36:43 -0700 Message-ID: <20230530233643.4044823-4-quic_bjorande@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230530233643.4044823-1-quic_bjorande@quicinc.com> References: <20230530233643.4044823-1-quic_bjorande@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 8sC1niehEyTMmkS9m9iHlIm1tTyOaNI9 X-Proofpoint-GUID: 8sC1niehEyTMmkS9m9iHlIm1tTyOaNI9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-05-30_17,2023-05-30_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 impostorscore=0 spamscore=0 phishscore=0 malwarescore=0 bulkscore=0 adultscore=0 mlxscore=0 mlxlogscore=823 priorityscore=1501 clxscore=1015 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305300193 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org In the even that Linux failed to allocate the reserved memory range specified in the DeviceTree, the size of the reserved_mem will be 0, which results in a oops when memory remapping is attempted. Detect this and report that the memory region was not found instead. Signed-off-by: Bjorn Andersson --- Changes since v1: - New patch drivers/soc/qcom/rmtfs_mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/soc/qcom/rmtfs_mem.c b/drivers/soc/qcom/rmtfs_mem.c index 28238974d913..e3a55fa041f9 100644 --- a/drivers/soc/qcom/rmtfs_mem.c +++ b/drivers/soc/qcom/rmtfs_mem.c @@ -180,7 +180,7 @@ static int qcom_rmtfs_mem_probe(struct platform_device *pdev) int ret, i; rmem = of_reserved_mem_lookup(node); - if (!rmem) { + if (!rmem || !rmem->size) { dev_err(&pdev->dev, "failed to acquire memory region\n"); return -EINVAL; }