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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MIME_BASE64_TEXT,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, USER_AGENT_GIT autolearn=unavailable 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 C2DACC433E0 for ; Wed, 17 Jun 2020 05:43:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A27862082F for ; Wed, 17 Jun 2020 05:43:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="bIYfQxQM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725929AbgFQFnT (ORCPT ); Wed, 17 Jun 2020 01:43:19 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:1574 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725851AbgFQFnS (ORCPT ); Wed, 17 Jun 2020 01:43:18 -0400 X-UUID: 4d3606af9abb4eb3b71ff1d3b9ba594b-20200617 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=rdDoFRdKNzLFxd2DJUrNxctB8vmIe5DS4Jzw+A+aOnM=; b=bIYfQxQM3ixEWbj5ddGKb24ocTww1yEbDTKx/93ZPyi8XNFz2M6uH+9eRIrW6rDf0VbYOgfD5Y1BnL2k0VWGBSeg0QcT7JLHLhZxjWt1NpASrJ/eEmDrLjMo8FRJbFjPFx3Qab69Dl11ksLchHh5nmX6ZEFRj1y53VoKuxR63zM=; X-UUID: 4d3606af9abb4eb3b71ff1d3b9ba594b-20200617 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 854175745; Wed, 17 Jun 2020 13:43:14 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 17 Jun 2020 13:43:12 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 17 Jun 2020 13:43:12 +0800 From: Macpaul Lin To: Alan Stern , Chunfeng Yun , Greg Kroah-Hartman , Felipe Balbi , Matthias Brugger , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= , Sergey Organov , Fabrice Gasnier , , , , CC: Mediatek WSD Upstream , Macpaul Lin , Macpaul Lin Subject: [PATCH v3] usb: gadget: u_serial: improve performance for large data Date: Wed, 17 Jun 2020 13:42:57 +0800 Message-ID: <1592372577-7986-1-git-send-email-macpaul.lin@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1592362007-7120-1-git-send-email-macpaul.lin@mediatek.com> References: <1592362007-7120-1-git-send-email-macpaul.lin@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Content-Transfer-Encoding: base64 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Tm93YWRheXMgc29tZSBlbWJlZGRlZCBzeXN0ZW1zIHVzZSBWQ09NIHRvIHRyYW5zZmVyIGxhcmdl IGxvZyBhbmQgZGF0YS4NClRha2UgTFRFIE1PREVNIGFzIGFuIGV4YW1wbGUsIGR1cmluZyB0aGUg bG9uZyBkZWJ1Z2dpbmcgc3RhZ2UsIGxhcmdlDQpsb2cgYW5kIGRhdGEgd2VyZSB0cmFuc2ZlciB0 aHJvdWdoIFZDT00gd2hlbiBkb2luZyBmaWVsZCB0cnkgb3IgaW4NCm9wZXJhdG9yJ3MgbGFiLiBI ZXJlIHdlIHN1Z2dlc3Qgc2xpZ2h0bHkgaW5jcmVhc2UgdGhlIHRyYW5zZmVyIGJ1ZmZlcg0KaW4g dV9zZXJpYWwuYyBmb3IgcGVyZm9ybWFuY2UgaW1wcm92aW5nLg0KDQpTaWduZWQtb2ZmLWJ5OiBN YWNwYXVsIExpbiA8bWFjcGF1bC5saW5AbWVkaWF0ZWsuY29tPg0KLS0tDQpDaGFuZ2VzIGZvciB2 MjoNCiAgLSBEcm9wIHByZXZpb3VzIHBhdGNoIGZvciBhZGRpbmcgZmxhZyB3aGljaCBpbmRpY2F0 ZXMgaGFyZHdhcmUgY2FwYWJpbGl0eSBpbg0KICAgIGdhZGdldC5oIGFuZCBpbiBETUEgZW5naW5l IGFjY29yZGluZyB0byBBbGFuJ3Mgc3VnZ2VzdGlvbi4gVGhhbmtzLg0KICAtIFJlcGxhY2UgcmVx dWVzdGVkIGJ1ZmZlciBzaXplICJSRVFfQlVGX1NJWkUiIGluc3RlYWQgb2YgY2hlY2tpbmcgaGFy ZHdhcmUNCiAgICBjYXBhYmlsaXR5Lg0KICAtIFJlZmluZSBjb21taXQgbWVzc2FnZXMuDQpDaGFu Z2VzIGZvciB2MzoNCiAgLSBDb2RlOiBubyBjaGFuZ2UuDQogICAgQ29tbWl0OiBBZGQgbWlzc2lu ZyBjaGFuZ2UgbG9nIGluIHYyLg0KDQogZHJpdmVycy91c2IvZ2FkZ2V0L2Z1bmN0aW9uL3Vfc2Vy aWFsLmMgfCAgICA1ICsrKy0tDQogMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygrKSwgMiBk ZWxldGlvbnMoLSkNCg0KZGlmZiAtLWdpdCBhL2RyaXZlcnMvdXNiL2dhZGdldC9mdW5jdGlvbi91 X3NlcmlhbC5jIGIvZHJpdmVycy91c2IvZ2FkZ2V0L2Z1bmN0aW9uL3Vfc2VyaWFsLmMNCmluZGV4 IDNjZmM2ZTIuLmQ3OTEyYTkgMTAwNjQ0DQotLS0gYS9kcml2ZXJzL3VzYi9nYWRnZXQvZnVuY3Rp b24vdV9zZXJpYWwuYw0KKysrIGIvZHJpdmVycy91c2IvZ2FkZ2V0L2Z1bmN0aW9uL3Vfc2VyaWFs LmMNCkBAIC04MCw2ICs4MCw3IEBADQogI2RlZmluZSBRVUVVRV9TSVpFCQkxNg0KICNkZWZpbmUg V1JJVEVfQlVGX1NJWkUJCTgxOTIJCS8qIFRYIG9ubHkgKi8NCiAjZGVmaW5lIEdTX0NPTlNPTEVf QlVGX1NJWkUJODE5Mg0KKyNkZWZpbmUgUkVRX0JVRl9TSVpFCQk0MDk2DQogDQogLyogY29uc29s ZSBpbmZvICovDQogc3RydWN0IGdzX2NvbnNvbGUgew0KQEAgLTI0Nyw3ICsyNDgsNyBAQCBzdGF0 aWMgaW50IGdzX3N0YXJ0X3R4KHN0cnVjdCBnc19wb3J0ICpwb3J0KQ0KIAkJCWJyZWFrOw0KIA0K IAkJcmVxID0gbGlzdF9lbnRyeShwb29sLT5uZXh0LCBzdHJ1Y3QgdXNiX3JlcXVlc3QsIGxpc3Qp Ow0KLQkJbGVuID0gZ3Nfc2VuZF9wYWNrZXQocG9ydCwgcmVxLT5idWYsIGluLT5tYXhwYWNrZXQp Ow0KKwkJbGVuID0gZ3Nfc2VuZF9wYWNrZXQocG9ydCwgcmVxLT5idWYsIFJFUV9CVUZfU0laRSk7 DQogCQlpZiAobGVuID09IDApIHsNCiAJCQl3YWtlX3VwX2ludGVycnVwdGlibGUoJnBvcnQtPmRy YWluX3dhaXQpOw0KIAkJCWJyZWFrOw0KQEAgLTUxNCw3ICs1MTUsNyBAQCBzdGF0aWMgaW50IGdz X2FsbG9jX3JlcXVlc3RzKHN0cnVjdCB1c2JfZXAgKmVwLCBzdHJ1Y3QgbGlzdF9oZWFkICpoZWFk LA0KIAkgKiBiZSBhcyBzcGVlZHkgYXMgd2UgbWlnaHQgb3RoZXJ3aXNlIGJlLg0KIAkgKi8NCiAJ Zm9yIChpID0gMDsgaSA8IG47IGkrKykgew0KLQkJcmVxID0gZ3NfYWxsb2NfcmVxKGVwLCBlcC0+ bWF4cGFja2V0LCBHRlBfQVRPTUlDKTsNCisJCXJlcSA9IGdzX2FsbG9jX3JlcShlcCwgUkVRX0JV Rl9TSVpFLCBHRlBfQVRPTUlDKTsNCiAJCWlmICghcmVxKQ0KIAkJCXJldHVybiBsaXN0X2VtcHR5 KGhlYWQpID8gLUVOT01FTSA6IDA7DQogCQlyZXEtPmNvbXBsZXRlID0gZm47DQotLSANCjEuNy45 LjUNCg==