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 X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33169C4321D for ; Thu, 16 Aug 2018 06:21:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CDD322147E for ; Thu, 16 Aug 2018 06:21:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CDD322147E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=hisilicon.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388926AbeHPJRu (ORCPT ); Thu, 16 Aug 2018 05:17:50 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:6410 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726168AbeHPJRu (ORCPT ); Thu, 16 Aug 2018 05:17:50 -0400 Received: from DGGEMM404-HUB.china.huawei.com (unknown [172.30.72.55]) by Forcepoint Email with ESMTP id E806E6C3B3C4F; Thu, 16 Aug 2018 14:21:33 +0800 (CST) Received: from DGGEMM526-MBX.china.huawei.com ([169.254.8.26]) by DGGEMM404-HUB.china.huawei.com ([10.3.20.212]) with mapi id 14.03.0399.000; Thu, 16 Aug 2018 14:21:33 +0800 From: "Zengtao (B)" To: Alan Stern CC: Roger Quadros , "gregkh@linuxfoundation.org" , "mathias.nyman@linux.intel.com" , "drinkcat@chromium.org" , "felipe.balbi@linux.intel.com" , "drake@endlessm.com" , "mike.looijmans@topic.nl" , "joe@perches.com" , "linux-usb@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] usb: hub: try old enumeration scheme first for high speed devices Thread-Topic: [PATCH] usb: hub: try old enumeration scheme first for high speed devices Thread-Index: AQHUMHhu69J7qZINb0WTPExaubbbVKS4SOuAgAA6VQCABl4BAP//8QSAgAMd8CA= Date: Thu, 16 Aug 2018 06:21:33 +0000 Message-ID: <678F3D1BB717D949B966B68EAEB446ED0C9B2CC0@dggemm526-mbx.china.huawei.com> References: <678F3D1BB717D949B966B68EAEB446ED0C9B12B9@dggemm526-mbx.china.huawei.com> In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.67.222.15] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SGkgYWxhbjoNCg0KPi0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tDQo+RnJvbTogQWxhbiBTdGVy biBbbWFpbHRvOnN0ZXJuQHJvd2xhbmQuaGFydmFyZC5lZHVdDQo+U2VudDogVHVlc2RheSwgQXVn dXN0IDE0LCAyMDE4IDEwOjQwIFBNDQo+VG86IFplbmd0YW8gKEIpIDxwcmltZS56ZW5nQGhpc2ls aWNvbi5jb20+DQo+Q2M6IFJvZ2VyIFF1YWRyb3MgPHJvZ2VycUB0aS5jb20+OyBncmVna2hAbGlu dXhmb3VuZGF0aW9uLm9yZzsNCj5tYXRoaWFzLm55bWFuQGxpbnV4LmludGVsLmNvbTsgZHJpbmtj YXRAY2hyb21pdW0ub3JnOw0KPmZlbGlwZS5iYWxiaUBsaW51eC5pbnRlbC5jb207IGRyYWtlQGVu ZGxlc3NtLmNvbTsgbWlrZS5sb29pam1hbnNAdG9waWMubmw7DQo+am9lQHBlcmNoZXMuY29tOyBs aW51eC11c2JAdmdlci5rZXJuZWwub3JnOyBsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnDQo+ U3ViamVjdDogUkU6IFtQQVRDSF0gdXNiOiBodWI6IHRyeSBvbGQgZW51bWVyYXRpb24gc2NoZW1l IGZpcnN0IGZvciBoaWdoIHNwZWVkDQo+ZGV2aWNlcw0KPg0KPk9uIFR1ZSwgMTQgQXVnIDIwMTgs IFplbmd0YW8gKEIpIHdyb3RlOg0KPg0KPj4gSGkgYWxhbjoNCj4+DQo+PiA+LS0tLS1PcmlnaW5h bCBNZXNzYWdlLS0tLS0NCj4+ID5Gcm9tOiBsaW51eC11c2Itb3duZXJAdmdlci5rZXJuZWwub3Jn DQo+PiA+W21haWx0bzpsaW51eC11c2Itb3duZXJAdmdlci5rZXJuZWwub3JnXSBPbiBCZWhhbGYg T2YgQWxhbiBTdGVybg0KPj4gPlNlbnQ6IEZyaWRheSwgQXVndXN0IDEwLCAyMDE4IDEwOjIwIFBN DQo+PiA+VG86IFJvZ2VyIFF1YWRyb3MgPHJvZ2VycUB0aS5jb20+DQo+PiA+Q2M6IFplbmd0YW8g KEIpIDxwcmltZS56ZW5nQGhpc2lsaWNvbi5jb20+Ow0KPj4gPmdyZWdraEBsaW51eGZvdW5kYXRp b24ub3JnOyBtYXRoaWFzLm55bWFuQGxpbnV4LmludGVsLmNvbTsNCj4+ID5kcmlua2NhdEBjaHJv bWl1bS5vcmc7IGZlbGlwZS5iYWxiaUBsaW51eC5pbnRlbC5jb207DQo+PiA+ZHJha2VAZW5kbGVz c20uY29tOyBtaWtlLmxvb2lqbWFuc0B0b3BpYy5ubDsgam9lQHBlcmNoZXMuY29tOw0KPj4gPmxp bnV4LXVzYkB2Z2VyLmtlcm5lbC5vcmc7IGxpbnV4LWtlcm5lbEB2Z2VyLmtlcm5lbC5vcmcNCj4+ ID5TdWJqZWN0OiBSZTogW1BBVENIXSB1c2I6IGh1YjogdHJ5IG9sZCBlbnVtZXJhdGlvbiBzY2hl bWUgZmlyc3QgZm9yDQo+PiA+aGlnaCBzcGVlZCBkZXZpY2VzDQo+PiA+DQo+PiA+T24gRnJpLCAx MCBBdWcgMjAxOCwgUm9nZXIgUXVhZHJvcyB3cm90ZToNCj4+ID4NCj4+ID4+IEhpLA0KPj4gPj4N Cj4+ID4+IE9uIDEwLzA4LzE4IDE4OjAxLCBaZW5nIFRhbyB3cm90ZToNCj4+ID4+ID4gVGhlIG5l dyBzY2hlbWUgaXMgcmVxdWlyZWQganVzdCB0byBzdXBwb3J0IGxlZ2FjeSBsb3cgYW5kDQo+PiA+ PiA+IGZ1bGwtc3BlZWQgZGV2aWNlcy4gRm9yIGhpZ2ggc3BlZWQgZGV2aWNlcywgaXQgd2lsbCBz bG93ZXIgdGhlIGVudW1lcmF0aW9uDQo+c3BlZWQuDQo+PiA+PiA+IFNvIGluIHRoaXMgcGF0Y2gg d2UgdHJ5IHRoZSAib2xkIiBlbnVtZXJhdGlvbiBzY2hlbWUgZmlyc3QgZm9yDQo+PiA+PiA+IGhp Z2ggc3BlZWQgZGV2aWNlcy4NCj4+ID4+DQo+PiA+PiBIb3cgc2xvdyBkb2VzIGl0IGdldD8gSXMg aXQgc2lnbmlmaWNhbnQ/DQo+PiA+PiBEbyB3ZSByaXNrIGJyZWFraW5nIGV4aXN0aW5nIEhTIGRl dmljZXMgdGhhdCB3b3JrPyBJIGRvbid0IHRoaW5rIHdlDQo+PiA+PiBjYW4gYmUgc3VyZSB0aWxs IHdlIHJ1biB0aGlzIHRocm91Z2ggdGVzdGluZy4NCj4+ID4NCj4+ID5JbmRlZWQuICBJIGFtIGV4 dHJlbWVseSBza2VwdGljYWwgYWJvdXQgYSBwYXRjaCBsaWtlIHRoaXMsIHVubGVzcw0KPj4gPnNv bWVib2R5IGNhbiBzaG93IHRoYXQgV2luZG93cyB1c2VzIHRoZSAib2xkIiBzY2hlbWUgZm9yIGhp Z2gtc3BlZWQNCj5kZXZpY2VzLg0KPj4NCj4+IFllcywgdGhpcyBpcyB3aGF0IHRoZSB3aW5kb3dz IGhhcyBkb25lLCB5b3UgY2FuIHJlZmVyIHRvDQo+PiBodHRwczovL2Jsb2dzLm1zZG4ubWljcm9z b2Z0LmNvbS91c2Jjb3JlYmxvZy8yMDEzLzA0LzExL3VzYi0yLTEtMi0wLTEtDQo+PiAxLWRldmlj ZS1lbnVtZXJhdGlvbi1jaGFuZ2VzLWluLXdpbmRvd3MtOC8NCj4NCj5BbmQgdGhhdCBibG9nIHBv c3QgaXMgNSB5ZWFycyBvbGQhDQo+DQo+T2theSwgSSB0aGluayB3ZSBjYW4gZ28gYWhlYWQgYW5k IG1ha2UgdGhpcyBjaGFuZ2UuICBIb3dldmVyLCB5b3Ugc2hvdWxkDQo+dXBkYXRlIHRoZSBwYXRj aCBkZXNjcmlwdGlvbiB0byBtZW50aW9uIHdoYXQgTWljcm9zb2Z0IGRpZCBpbiBXaW5kb3dzIDgg YW5kDQo+c2F5IHRoYXQgdGhlIG5ldyBiZWhhdmlvciBtYXRjaGVzIHRoZWlycy4NCj4NCk9rYXks IEkgd2lsbCB1cGRhdGUgaXQgdGhlIGNoYW5nZSBsb2cgaW4gdjIuDQoNCj5BbHNvLCBhcyBSb2dl ciBtZW50aW9uZWQsIHlvdSBzaG91bGQgdXBkYXRlIHRoZSBkb2N1bWVudGF0aW9uIHRvIHNheSB0 aGF0IHRoZQ0KPm9sZF9zY2hlbWVfZmlyc3QgbW9kdWxlIHBhcmFtZXRlciBub3cgYXBwbGllcyBv bmx5IHRvIGxvdy0gYW5kIGZ1bGwtc3BlZWQNCj5kZXZpY2VzLCBzaW5jZSBoaWdoLSBhbmQgU3Vw ZXJTcGVlZCBkZXZpY2VzIGFsd2F5cyB1c2UgdGhlIG9sZCBzY2hlbWUgZmlyc3QuDQo+DQoNClNp bmNlIHdlIHNob3VsZCBoYXZlIGRlZGljYXRlZCBlbnVtZXJhdGlvbiBmbG93IGZvciBTUywgSElH SCwgbG93IGFuZCBmdWxsIHNwZWVkIGRldmljZXMsDQpTbyBJIHRoaW5rIHRoZSBvbGRfc2NoZW1l X2ZpcnN0IGFuZCB1c2VfYm90aF9zY2hlbWVzIHBhcmFtZXRlcnMgc2hvdWxkIGJlIHJlbW92ZWQu DQpXaGF0IGRvIHlvdSB0aGluayBhYm91dCBpdD8NCg0KPkFsYW4gU3Rlcm4NCg0K