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 9CE3CC433EF for ; Thu, 28 Apr 2022 07:55:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343548AbiD1H63 (ORCPT ); Thu, 28 Apr 2022 03:58:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234669AbiD1H60 (ORCPT ); Thu, 28 Apr 2022 03:58:26 -0400 Received: from zju.edu.cn (spam.zju.edu.cn [61.164.42.155]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 6E776DD; Thu, 28 Apr 2022 00:55:11 -0700 (PDT) Received: by ajax-webmail-mail-app3 (Coremail) ; Thu, 28 Apr 2022 15:55:01 +0800 (GMT+08:00) X-Originating-IP: [222.205.13.90] Date: Thu, 28 Apr 2022 15:55:01 +0800 (GMT+08:00) X-CM-HeaderCharset: UTF-8 From: "Lin Ma" To: "Greg KH" Cc: "Jakub Kicinski" , "Duoming Zhou" , krzysztof.kozlowski@linaro.org, pabeni@redhat.com, linux-kernel@vger.kernel.org, davem@davemloft.net, alexander.deucher@amd.com, akpm@linux-foundation.org, broonie@kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH net v4] nfc: ... device_is_registered() is data race-able X-Priority: 3 X-Mailer: Coremail Webmail Server Version XT5.0.13 build 20210104(ab8c30b6) Copyright (c) 2002-2022 www.mailtech.cn zju.edu.cn In-Reply-To: References: <20220427011438.110582-1-duoming@zju.edu.cn> <20220427174548.2ae53b84@kernel.org> <38929d91.237b.1806f05f467.Coremail.linma@zju.edu.cn> Content-Transfer-Encoding: base64 Content-Type: text/plain; charset=UTF-8 MIME-Version: 1.0 Message-ID: <2d7c9164.2b1f.1806f2a8ed9.Coremail.linma@zju.edu.cn> X-Coremail-Locale: zh_CN X-CM-TRANSID: cC_KCgDnXmJVSGpi97osAw--.46956W X-CM-SenderInfo: qtrwiiyqvtljo62m3hxhgxhubq/1tbiAwMOElNG3GhD8wABsM X-Coremail-Antispam: 1Ur529EdanIXcx71UUUUU7IcSsGvfJ3iIAIbVAYjsxI4VWxJw CS07vEb4IE77IF4wCS07vE1I0E4x80FVAKz4kxMIAIbVAFxVCaYxvI4VCIwcAKzIAtYxBI daVFxhVjvjDU= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SGVsbG8gR3JlZywKCgo+IAo+IFlvdSBzaG91bGQgbm90IGJlIG1ha2luZyB0aGVzZSB0eXBlcyBv ZiBjaGVja3Mgb3V0c2lkZSBvZiB0aGUgZHJpdmVyCj4gY29yZS4KPiAKPiA+IFRoaXMgaXMgYnkg bm8gbWVhbnMgbWF0Y2hpbmcgb3VyIGV4cGVjdGF0aW9ucyBhcyBvbmUgb2Ygb3VyIHByZXZpb3Vz IHBhdGNoIHJlbGllcyBvbiB0aGUgZGV2aWNlX2lzX3JlZ2lzdGVyZWQgY29kZS4KPiAKPiBQbGVh c2UgZG8gbm90IGRvIHRoYXQuCj4gCj4gPiAKPiA+IC0+IHRoZSBwYXRjaDogM2UzYjVkZmNkMTZh ICgiTkZDOiByZW9yZGVyIHRoZSBsb2dpYyBpbiBuZmNfe3VuLH1yZWdpc3Rlcl9kZXZpY2UiKQo+ ID4gCj4gPC4uLj4KPiA+IAo+ID4gSW4gYW5vdGhlciB3b3JkLCB0aGUgZGV2aWNlX2RlbCAtPiBr b2JqZWN0X2RlbCAtPiBfX2tvYmplY3RfZGVsIGlzIG5vdCBwcm90ZWN0ZWQgYnkgdGhlIGRldmlj ZV9sb2NrLgo+IAo+IE5vciBzaG91bGQgaXQgYmUuCj4gCgpJIG1heSBoYXZlIG1pc3Rha2VubHkg cHJlc2VudGVkIG15IHBvaW50LiBJbiBmYWN0LCB0aGVyZSBpcyBub3RoaW5nIHdyb25nIHdpdGgg dGhlIGRldmljZSBjb3JlLCBub3RoaW5nIHRvIGRvIHdpdGggdGhlIGludGVybmFsIG9mIGRldmlj ZV9kZWwgYW5kIGRldmljZV9pc19yZWdpc3RlcmVkIGltcGxlbWVudGF0aW9uLiBBbmQsIG9mIGNv dXJzZSwgd2Ugd2lsbCBub3QgYWRkIGFueSBjb2RlIG9yIGRvIGFueSBtb2RpZmljYXRpb24gdG8g dGhlIGRldmljZS9kcml2ZXIgYmFzZSBjb2RlLgoKVGhlIHBvaW50IGlzIHRoZSBjb21iaW5hdGlv biBvZiBkZXZpY2VfaXNfcmVnaXN0ZXJlZCArIGRldmljZV9kZWwsIHdoaWNoIGlzIHVzZWQgaW4g TkZDIGNvcmUsIGlzIG5vdCBzYWZlLgoKVGhhdCBpcyB0byBzYXksIGV2ZW4gdGhlIGRldmljZV9p c19yZWdpc3RlcmVkIGNhbiByZXR1cm4gVHJ1ZSBldmVuIHRoZSBkZXZpY2VfZGVsIGlzIGV4ZWN1 dGluZyBpbiBhbm90aGVyIHRocmVhZC4KCihCeSBkZWJ1Z2dpbmcgd2UgdGhpbmsgdGhpcyBpcyB0 cnVlLCBjb3JyZWN0IG1lIGlmIGl0IGlzIG5vdCkKCkhlbmNlIHdlIHdhbnQgdG8gYWRkIGFkZGl0 aW9uYWwgc3RhdGUgaW4gbmZjX2RldiBvYmplY3QgdG8gZml4IHRoYXQsIG5vdCBnb2luZyB0byBh ZGQgYW55IHN0YXRlIGluIGRldmljZS9kcml2ZXIgY29yZS4KCj4gPiBUaGlzIG1lYW5zIHRoZSBk ZXZpY2VfbG9jayArIGRldmljZV9pc19yZWdpc3RlcmVkIGlzIHN0aWxsIHByb25lIHRvIHRoZSBk YXRhIHJhY2UuIEFuZCB0aGlzIGlzIG5vdCBqdXN0IHRoZSBwcm9ibGVtIHdpdGggZmlybXdhcmUg ZG93bmxvYWRpbmcuIFRoZSBhbGwgcmVsZXZhbnQgbmV0bGluayB0YXNrcyB0aGF0IHVzZSB0aGUg ZGV2aWNlX2xvY2sgKyBkZXZpY2VfaXNfcmVnaXN0ZXJlZCBpcyBwb3NzaWJsZSB0byBiZSByYWNl ZC4KPiA+IAo+ID4gVG8gdGhpcyBlbmQsIHdlIHdpbGwgY29tZSBvdXQgd2l0aCB0d28gcGF0Y2hl cywgb25lIGZvciBmaXhpbmcgdGhpcyBkZXZpY2VfaXNfcmVnaXN0ZXJlZCBieSB1c2luZyBhbm90 aGVyIHN0YXR1cyB2YXJpYWJsZSBpbnN0ZWFkLiBUaGUgb3RoZXIgaXMgdGhlIHBhdGNoIHRoYXQg cmVvcmRlcnMgdGhlIGNvZGUgaW4gbmNpX3VucmVnaXN0ZXJfZGV2aWNlLgo+IAo+IFdoeSBpcyB0 aGlzIHNvbWVob3cgdW5pcXVlIHRvIHRoZXNlIGRldmljZXM/ICBXaHkgZG8gbm8gb3RoZXIgYnVz ZXMgaGF2ZQo+IHRoaXMgaXNzdWU/ICBBcmUgeW91IHNvbWVob3cgYWxsb3dpbmcgYSBjb2RlIHBh dGggdGhhdCBzaG91bGQgbm90IGJlCj4gaGFwcGVuaW5nPwo+IAo+IHRoYW5rcywKPiAKPiBncmVn IGstaAoKSW4gZmFjdCwgYnkgc2VhcmNoaW5nIHRoZSBkZXZpY2VfaXNfcmVnaXN0ZXJlZCgpIHVz ZSBjYXNlcywgSSBmb3VuZCB0aGF0IG1vc3Qgb2YgdGhlbSBhcmUgdXNlZCBpbiBkcmllciBjb2Rl IGluc3RlYWQgb2YgaW4gdGhlIG5ldHdvcmsgc3RhY2suIEkgaGF2ZSBubyBpZGVhIHdoZXRoZXIg b3Igbm90IHRoZXkgc3VmZmVyIGZyb20gc2ltaWxhciBwcm9ibGVtcyBhbmQgSSB3aWxsIGNoZWNr IHRoYXQgb3V0LgoKVGhhbmtzCkxpbg==