From patchwork Wed Jun 28 12:34:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mukesh Ojha X-Patchwork-Id: 697547 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 D79B8C04A94 for ; Wed, 28 Jun 2023 12:37:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232176AbjF1Mhv (ORCPT ); Wed, 28 Jun 2023 08:37:51 -0400 Received: from mx0b-0031df01.pphosted.com ([205.220.180.131]:63716 "EHLO mx0b-0031df01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231821AbjF1Mgg (ORCPT ); Wed, 28 Jun 2023 08:36:36 -0400 Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 35SB2tG3012176; Wed, 28 Jun 2023 12:36:18 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-type; s=qcppdkim1; bh=P2QBL+7zGMKDj1s/OV57kLVSn1SCcUja5763zLo1cZM=; b=d9tPUeWHLHRKTfxZHWo6EMSVNoJA21gzQQKvkikc5/i8hxvN0fk38LK8oZLeX7bOovnD OwRtaDyoVhj0OSEIwjk4naLKtRaI+LpwjySwbcRkItMc/cLOB2ihwZUQW2vGhOip3hAe 9cS15yWyV00EiH5mtq1fbz8PGF2uFr9nMDyA6RyV2VkLH52ysfnYHCeAJzmiKpIpgPe1 DKGM1tOiKhZPo4/Cx+9Zue7I0ElwpGI5C3vsKFiWiPAmmz1IxNf9/0lLfX8tO+kZf19o RtoTE3uE5YDuc0N8Y1eEDmXeE2yH7rDp3mo6iknjgYp9fgSSgC9XTCPnWf2BjE0XQH90 mA== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3rgetpgw5s-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 28 Jun 2023 12:36:17 +0000 Received: from nasanex01c.na.qualcomm.com (nasanex01c.na.qualcomm.com [10.45.79.139]) by NASANPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 35SCaGEs024716 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 28 Jun 2023 12:36:16 GMT Received: from hu-mojha-hyd.qualcomm.com (10.80.80.8) by nasanex01c.na.qualcomm.com (10.45.79.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Wed, 28 Jun 2023 05:36:10 -0700 From: Mukesh Ojha To: , , , , , , , , , , , , , , CC: , , , , , , , , "Mukesh Ojha" Subject: [PATCH v4 09/21] pstore/ram : Export ramoops_parse_dt() symbol Date: Wed, 28 Jun 2023 18:04:36 +0530 Message-ID: <1687955688-20809-10-git-send-email-quic_mojha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1687955688-20809-1-git-send-email-quic_mojha@quicinc.com> References: <1687955688-20809-1-git-send-email-quic_mojha@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01c.na.qualcomm.com (10.45.79.139) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: ZoEjWss5MTUTidHK6qRrwbz1QzIG9cbn X-Proofpoint-GUID: ZoEjWss5MTUTidHK6qRrwbz1QzIG9cbn X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-28_08,2023-06-27_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 mlxlogscore=999 spamscore=0 priorityscore=1501 suspectscore=0 clxscore=1015 bulkscore=0 mlxscore=0 phishscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306280111 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org It is possible if some driver do not want ramoops region to be static instead it sets up the mem_address and mem_size and use everything what this driver has to offer. To offer this convenience export ramoops_parse_dt() function. Signed-off-by: Mukesh Ojha --- fs/pstore/ram.c | 26 ++++++++++++++++++-------- include/linux/pstore_ram.h | 2 ++ 2 files changed, 20 insertions(+), 8 deletions(-) diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index ade66dbe5f39..6bb66d044bef 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -638,7 +638,7 @@ static int ramoops_parse_dt_u32(struct platform_device *pdev, return 0; } -static int ramoops_parse_dt(struct platform_device *pdev, +int ramoops_parse_dt(struct platform_device *pdev, struct ramoops_platform_data *pdata) { struct device_node *of_node = pdev->dev.of_node; @@ -649,15 +649,24 @@ static int ramoops_parse_dt(struct platform_device *pdev, dev_dbg(&pdev->dev, "using Device Tree\n"); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, - "failed to locate DT /reserved-memory resource\n"); - return -EINVAL; + /* + * It is possible if some driver do not want ramoops + * region to be static instead it sets up the mem_address + * and mem_size and use everything what this driver has + * to offer. + */ + if (!pdata->mem_address && !pdata->mem_size) { + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, + "failed to locate DT /reserved-memory resource\n"); + return -EINVAL; + } + + pdata->mem_size = resource_size(res); + pdata->mem_address = res->start; } - pdata->mem_size = resource_size(res); - pdata->mem_address = res->start; /* * Setting "unbuffered" is deprecated and will be ignored if * "mem_type" is also specified. @@ -713,6 +722,7 @@ static int ramoops_parse_dt(struct platform_device *pdev, return 0; } +EXPORT_SYMBOL_GPL(ramoops_parse_dt); static int ramoops_probe(struct platform_device *pdev) { diff --git a/include/linux/pstore_ram.h b/include/linux/pstore_ram.h index 9d65ff94e216..55df4e631a25 100644 --- a/include/linux/pstore_ram.h +++ b/include/linux/pstore_ram.h @@ -8,6 +8,7 @@ #ifndef __LINUX_PSTORE_RAM_H__ #define __LINUX_PSTORE_RAM_H__ +#include #include struct persistent_ram_ecc_info { @@ -39,4 +40,5 @@ struct ramoops_platform_data { struct persistent_ram_ecc_info ecc_info; }; +int ramoops_parse_dt(struct platform_device *, struct ramoops_platform_data *); #endif