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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96774EB64D7 for ; Mon, 26 Jun 2023 10:40:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230022AbjFZKkK (ORCPT ); Mon, 26 Jun 2023 06:40:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34574 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229781AbjFZKkE (ORCPT ); Mon, 26 Jun 2023 06:40:04 -0400 Received: from JPN01-TYC-obe.outbound.protection.outlook.com (mail-tycjpn01on2118.outbound.protection.outlook.com [40.107.114.118]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6CB4EE71; Mon, 26 Jun 2023 03:40:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=aN6OjpdUq+FEJeTZip72qZpjZevNJR3Wn66ht8AOl+RQWXepIqd645G6zJvzLHvEFnKFmynca5kG1ViQavigUTExoSlRsPfWkAzSyAob39xUISsoQe+yk6Q+QBnE6CXI1P/HugNPFZeHZ47dv+vK+1kcb9Eukm1bLNhef+YBgIVWrKIFEk7sy1D4sm64e1aN+P4FM6LXWCOAkCofYXqAVM6RTOYhWH0smLHeH/wV83vH7vbG2NpKrh48yBdFQPfyVEB9Gy7o3pRasa0lvgO4pg4PZljkfvOrBzDvhvnDnB4/N84KDoGdsw3sIy2yZ25YSkQ9K00z8B5Y+pECeE5jSA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=x6j7rOPN5CMI8cbyRrOChwwaYx6B0vg2J4bGj7BtG1o=; b=RX/Qbp60PrOf/WPByzGGMxfZhxXoFtXXNGTyXPVpLUAvcbxuqSGQ+5b5SLiFL5hwrUfbYzTnvXADW3egbEPCHko7gCE3/tlN+VCpwf/JYLyXkM3UMLTa2R7xViYGR2kKXKZSQMiV9lh/08GODZmz+ITLQjSrT9oqHC/t5OX7rsKFxn3r1JLeiyYbWH8YfnK3Bh0CZlJS/CZ0ktrzSP/aeCkVsi90zBPx5gSyOySLGMhc6y8M1F/yiYp8jo57QSKcsHhBZnAS3dc5tO3ptELSvlGEhQ3lTJjYdIBD+GHsmH77oYjEQO1uu9e+h7NX3mNOcVkuWnHF0I4hHGfwmd/ZOQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=connect.ust.hk; dmarc=pass action=none header.from=connect.ust.hk; dkim=pass header.d=connect.ust.hk; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=connect.ust.hk; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=x6j7rOPN5CMI8cbyRrOChwwaYx6B0vg2J4bGj7BtG1o=; b=AVWZGXFn1LEqj6ILBIeEfU8EPefWrLlPJ8AOFxNUA+BMdDNCGusk5DY11AG0DtXPgPBMTPws2udgoh0lxEljwyZWVO1wiQs8qm/mB5rxPEQyMz+GN6E+tFdVx6kZtSI30xOGZl7mf4TC4yvByLVj6D0ocZtaO0l7RxBEYo0Yv1o= Received: from TYCP286MB1188.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:b7::8) by TYCP286MB1730.JPNP286.PROD.OUTLOOK.COM (2603:1096:400:187::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6521.26; Mon, 26 Jun 2023 10:40:01 +0000 Received: from TYCP286MB1188.JPNP286.PROD.OUTLOOK.COM ([fe80::b429:5aa3:12f1:6b8]) by TYCP286MB1188.JPNP286.PROD.OUTLOOK.COM ([fe80::b429:5aa3:12f1:6b8%4]) with mapi id 15.20.6521.026; Mon, 26 Jun 2023 10:40:01 +0000 From: YE Chengfeng To: Linus Walleij , Bartosz Golaszewski , "andy@kernel.org" CC: "linux-gpio@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: [PATCH v2 2/2] gpiolib: cdev: Fix &le->wait.lock deadlock issue Thread-Topic: [PATCH v2 2/2] gpiolib: cdev: Fix &le->wait.lock deadlock issue Thread-Index: AQHZqBRmxizNLtHXWE+SgIMBvkENRg== Date: Mon, 26 Jun 2023 10:40:01 +0000 Message-ID: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: msip_labels: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=connect.ust.hk; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: TYCP286MB1188:EE_|TYCP286MB1730:EE_ x-ms-office365-filtering-correlation-id: e15352f2-67b3-486f-5c16-08db7631b1b7 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:TYCP286MB1188.JPNP286.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(13230028)(4636009)(396003)(376002)(366004)(136003)(346002)(39860400002)(451199021)(8676002)(8936002)(66446008)(76116006)(55016003)(66476007)(66556008)(66946007)(41300700001)(786003)(316002)(64756008)(4326008)(6506007)(26005)(9686003)(186003)(478600001)(54906003)(110136005)(7696005)(71200400001)(91956017)(2906002)(52536014)(5660300002)(38070700005)(122000001)(38100700002)(33656002)(86362001)(83380400001);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?gb2312?B?YnB6MGswQktKUXNiR2E1ZE1SVElycllTeDJRYy9lWEtpTzhWaEZnbms1aUpy?= =?gb2312?B?MkhOMEYzaC8xeFA0eWgzTDZvNTVXQjl6VXlWaUdoTlBQTko5UU42S1I1OTdL?= =?gb2312?B?VWo5VEFlSGdaN1dxbjhEZFFQc1JiUlh1RUxrU1BuZ1B5dW1QVURIVFQ1Nmgy?= =?gb2312?B?Tjl4Z3VFU2RoSWtLNmNVTnV2aUszdVM0K1NRT0dSZFl4R2dWczdiQUpIYnp0?= =?gb2312?B?a0hZMmN3OTFranl5SWR4OUtVa1kzTzB6amdFOU5ITVpyaWIyblVmTnovalEv?= =?gb2312?B?Y2lzZEFmdElRQm0zRWh0OFM0NlVqbGs3ZmRxdi9panFhaWFSdTFWZkZHazYw?= =?gb2312?B?OUtqdm9nUU8xdzBpa1lhYW9JeGFFR1BEUzVidlVYSGtRMldZYmRkSlFud1No?= =?gb2312?B?WUdXWkU5VmtwRTRXWU95S3hVdCtTWVhZbWlITVpvUHhPcHF3bXRGQXJJMFR1?= =?gb2312?B?bDQ2SjdZZlpwU3FpbG5iZU1XNC9WK2lkaUZod3ozVlZkdjB2UmxPRVR5aEov?= =?gb2312?B?VkNPNjNrMitxbVl3N3ZlKzA2Z0VxejB6dmlFK214bzFGT1k0Q292M3hJREVt?= =?gb2312?B?VWRmUHAyTkZDLzJzQ25tK2pNczVkSTIyRzFNMlJQU3lJamN3cTh1RDFSeWtz?= =?gb2312?B?Mnc4UVpXWG12SjhsSWNSNXBJTyt4anE5TDVIYUlrQkEyYUhDTjVzamFuUmR1?= =?gb2312?B?S2NRaW5DSC9LeW5hOG50MFk4SlVkQTk2KzhpUThGb244N2phWHhHU2g3ejky?= =?gb2312?B?R0NaV3JGcG0vU2RYMGVjbDZNMkI1ZkNjNGhNdGdMdWl3Yy9VUmVhQmdCeDAz?= =?gb2312?B?YTZ5Mm5iYkZacGM4cEppNmVJWWFpTGovOEdmTWIzaFV4aytuUndtaklUWWtS?= =?gb2312?B?ancySU5ZTW8weStMOXJDNGpybkhOZ1VmaUdGUGNCVTdlMENrRlBLRUUxR2FC?= =?gb2312?B?dFRDSlR0RzZjdFJucWFya2ptYVBrUzBLc1RFWEl3UXBjanBFb3podHZaNjVv?= =?gb2312?B?RkdlaUlSb25ubTBWdU5TMGFETzR2ZWNRcnhmdmxMVEE5RFA1YTZqbjRrQ25x?= =?gb2312?B?Z2hSNTJ2UWMrQ3N5RVFlRFpsb2owUHVxYll0dURzZzNKV2dzYnRoTE1qV0lx?= =?gb2312?B?UUk4bUh2UVR4TEtWL1BZazlYL2czWWw1VFpJSGZRc1ZpU2ptajBXcm1PTnlz?= =?gb2312?B?ZEFiNDkvZjd5OVNNb25hMUVEU2hIcWRiRXg1R25oQi9vL1VQeHk3SmtCQVd2?= =?gb2312?B?V3RMN1hrZ0NJZDM3ZlFBK3FINUtqbmkvc1dsSDRJR1JZTGxGUjFtYjJuRDdq?= =?gb2312?B?TGViUkpMdHdiWUErYUIyYk1mNUdtcko1OFUxY3dVOHduNnlXYWo0WVZxNDdh?= =?gb2312?B?aDR4NU4weGNmSEtJR0xCY3hTUUU5U1FybXk0Y0puMHA4ZmMyR1VEOHkzeDhR?= =?gb2312?B?RGl6RXNmN2pmdHRmTlNraFcrWE9Ld0tsQ3dTakV5akRpNE56RXJrd1FDWkFU?= =?gb2312?B?SVRjcHlLZ244Nm1mKzFvOFY2dk9DMmhlOEd0WVFJM1dJQ2lrb0o4a2N1V2dK?= =?gb2312?B?NDZ2TjNxMndxK284bVZ5ZW1BbC9PVTZRVzBTa2NZREVNbHR3Q052NjMrWG1C?= =?gb2312?B?UlBJWlFLcTcvT0FJbHVvOVduYWZaajdyZ2lkcG5EVUdXVHlKRUNPdkg3NEhj?= =?gb2312?B?UHRuUTBjRVJ2NFpkcUFSSmJWK3JZZE95Syt1UFdIbHJicGY2SFQ1TitVbXhH?= =?gb2312?B?SzFnWWVKbTVtWjdXem41Z1lBYlh0UXlvUFNwV2l6NkJnMkxlNGJuNGs5bXI2?= =?gb2312?B?Y2licDB3dFd6c1hHa1c0cFl4WGtsV0JPbU1NbUY2bDhGMzlEcXNpcXNHOTlj?= =?gb2312?B?MnFhYkE4bkl6eFJuakJKdVJ3bUlHVEFtT3NDb2h6dHhHdCtLdXlGQ2ZiZzhO?= =?gb2312?B?QUNvbTVibEdqS28xTHRSNjVicWJZd0FLeXgxd0JadTdIaHdEbVV4Qnl2YU04?= =?gb2312?B?MjhpdlJsZmhHUHpBWndsRHY2QytmTUZHRmhpcTh1enQwTVh0WjJ0d212WFhs?= =?gb2312?B?SUZGR1MyNnVack5DQlhuV0RZRU52R21pTitnSXIwd1dlWUU5aFZQZzFDeDQw?= =?gb2312?Q?IeZrX7PngLHhQnaWMji9XVQWh?= Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: connect.ust.hk X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: TYCP286MB1188.JPNP286.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-Network-Message-Id: e15352f2-67b3-486f-5c16-08db7631b1b7 X-MS-Exchange-CrossTenant-originalarrivaltime: 26 Jun 2023 10:40:01.0071 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 6c1d4152-39d0-44ca-88d9-b8d6ddca0708 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: uZgpypUOGzXVJihksNLP3l3pSMBAVaUKPLWcErNliMryHZzEQyf9Ao8TADPJQLC2j5IRaguRbwGiLZqFmURECw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYCP286MB1730 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org VGhlIHNvZnRpcnEgbGluZWV2ZW50X2lycV90aHJlYWQoKSBjb3VsZCBkZWFkbG9jayBvbiAmbGUt PndhaXQubG9jawppZiBpdCBwcmVlbXB0cyBsaW5lZXZlbnRfcmVhZF91bmxvY2tlZCgpIHdoaWNo IGFjcXVpcmVzIHRoZSBzYW1lCmxvY2sgYnV0IG5vdCBkaXNhYmxlIGlycS4KCkZpeCB0aGUgcG90 ZW50aWFsIGRlYWRsb2NrIGJ5IHNwaW5fbG9ja19pcnEoKS4KCkZpeGVzOiBkZWE5YzgwZWU2NzIg KCJncGlvbGliOiByZXdvcmsgdGhlIGxvY2tpbmcgbWVjaGFuaXNtIGZvciBsaW5lZXZlbnQga2Zp Zm8iKQpTaWduZWQtb2ZmLWJ5OiBDaGVuZ2ZlbmcgWWUgPGN5ZWFhQGNvbm5lY3QudXN0LmhrPgot LS0KIGRyaXZlcnMvZ3Bpby9ncGlvbGliLWNkZXYuYyB8IDEyICsrKysrKy0tLS0tLQogMSBmaWxl IGNoYW5nZWQsIDYgaW5zZXJ0aW9ucygrKSwgNiBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQgYS9k cml2ZXJzL2dwaW8vZ3Bpb2xpYi1jZGV2LmMgYi9kcml2ZXJzL2dwaW8vZ3Bpb2xpYi1jZGV2LmMK aW5kZXggZjc2OGQ0NmJkZWE3Li5hMmMxMDhmMTcyZjIgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3Bp by9ncGlvbGliLWNkZXYuYworKysgYi9kcml2ZXJzL2dwaW8vZ3Bpb2xpYi1jZGV2LmMKQEAgLTE4 NTgsMjggKzE4NTgsMjggQEAgc3RhdGljIHNzaXplX3QgbGluZWV2ZW50X3JlYWRfdW5sb2NrZWQo c3RydWN0IGZpbGUgKmZpbGUsIGNoYXIgX191c2VyICpidWYsCiAJCXJldHVybiAtRUlOVkFMOwog CiAJZG8gewotCQlzcGluX2xvY2soJmxlLT53YWl0LmxvY2spOworCQlzcGluX2xvY2tfaXJxKCZs ZS0+d2FpdC5sb2NrKTsKIAkJaWYgKGtmaWZvX2lzX2VtcHR5KCZsZS0+ZXZlbnRzKSkgewogCQkJ aWYgKGJ5dGVzX3JlYWQpIHsKLQkJCQlzcGluX3VubG9jaygmbGUtPndhaXQubG9jayk7CisJCQkJ c3Bpbl91bmxvY2tfaXJxKCZsZS0+d2FpdC5sb2NrKTsKIAkJCQlyZXR1cm4gYnl0ZXNfcmVhZDsK IAkJCX0KIAogCQkJaWYgKGZpbGUtPmZfZmxhZ3MgJiBPX05PTkJMT0NLKSB7Ci0JCQkJc3Bpbl91 bmxvY2soJmxlLT53YWl0LmxvY2spOworCQkJCXNwaW5fdW5sb2NrX2lycSgmbGUtPndhaXQubG9j ayk7CiAJCQkJcmV0dXJuIC1FQUdBSU47CiAJCQl9CiAKLQkJCXJldCA9IHdhaXRfZXZlbnRfaW50 ZXJydXB0aWJsZV9sb2NrZWQobGUtPndhaXQsCisJCQlyZXQgPSB3YWl0X2V2ZW50X2ludGVycnVw dGlibGVfbG9ja2VkX2lycShsZS0+d2FpdCwKIAkJCQkJIWtmaWZvX2lzX2VtcHR5KCZsZS0+ZXZl bnRzKSk7CiAJCQlpZiAocmV0KSB7Ci0JCQkJc3Bpbl91bmxvY2soJmxlLT53YWl0LmxvY2spOwor CQkJCXNwaW5fdW5sb2NrX2lycSgmbGUtPndhaXQubG9jayk7CiAJCQkJcmV0dXJuIHJldDsKIAkJ CX0KIAkJfQogCiAJCXJldCA9IGtmaWZvX291dCgmbGUtPmV2ZW50cywgJmdlLCAxKTsKLQkJc3Bp bl91bmxvY2soJmxlLT53YWl0LmxvY2spOworCQlzcGluX3VubG9ja19pcnEoJmxlLT53YWl0Lmxv Y2spOwogCQlpZiAocmV0ICE9IDEpIHsKIAkJCS8qCiAJCQkgKiBUaGlzIHNob3VsZCBuZXZlciBo YXBwZW4gLSB3ZSB3ZXJlIGhvbGRpbmcgdGhlIGxvY2sKLS0gCjIuMTcuMQ==