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 69B91C433EF for ; Wed, 29 Jun 2022 08:07:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232740AbiF2IHk (ORCPT ); Wed, 29 Jun 2022 04:07:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54002 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232088AbiF2IHi (ORCPT ); Wed, 29 Jun 2022 04:07:38 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A85213B574; Wed, 29 Jun 2022 01:07:36 -0700 (PDT) Received: from [192.168.1.100] (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id 79B8D66015AE; Wed, 29 Jun 2022 09:07:34 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1656490055; bh=2x7JJI7Gpw9v/avN+IvIawiJAZWgc780v4UFmC7WN1M=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=KIpXSyrfyDOlg0nVmlbqYjC3ymVb5Sap7cwjq6Udb6iHNuvrq9iIMOa/2ca4p4V/5 P/kJAMUJa/ciPMEkWhzKE30x2Zz9KoSJXwZFAa9Aq6AsRxgQZQpsmgNT2zKWSAObba vJMVJVOh+/82uJjnZ1HBPPjeNIcBIR7X5qXvMCq1GXYCvOOdFgcAYuPRFnxN7oVa0f yVQiDkg+yDZ3JPMRaB3cnTWx47bg8fBBB2zx9aMQijBlEXSK9iiEGRx/Emi09q2BGT BUXkBXOxHvhjq0d4HQoopaqO0/2SXdiKbvCSZ4DcIvUnXlkJLboMNEEKkg4HQYXGWF mvqB6VSuVbclg== Message-ID: <4329eb0e-eb4b-f0d2-358f-e1d15a9c49de@collabora.com> Date: Wed, 29 Jun 2022 10:07:31 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [PATCH v2] usb: gadget: f_uac1: add interface association descriptor Content-Language: en-US To: Chunfeng Yun , Felipe Balbi Cc: Greg Kroah-Hartman , Matthias Brugger , Pavel Hofman , Julian Scheel , Ruslan Bilovol , Yunhao Tian , xin lin , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org References: <20220629021304.21725-1-chunfeng.yun@mediatek.com> From: AngeloGioacchino Del Regno In-Reply-To: <20220629021304.21725-1-chunfeng.yun@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Il 29/06/22 04:13, Chunfeng Yun ha scritto: > From: xin lin > > When we want to use a composite device that supports UVC, UAC1 and > ADB at the same time, encounter that UAC1 can't work when connected > to windows 10 system. > from the online documents of microsoft, "overview of enumeration of > interface collections on usb composite devices", it recommends that > vendors use IADs (interface association descriptor) to define > interface collections. > After addding IAD, we can fix the issue. > > Signed-off-by: xin lin > Signed-off-by: Chunfeng Yun Reviewed-by: AngeloGioacchino Del Regno