linux-kernel - Re: [PATCH v2] usb: gadget: f_uac1: add interface association descriptor

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Message-ID: <4329eb0e-eb4b-f0d2-358f-e1d15a9c49de@collabora.com>
Date:   Wed, 29 Jun 2022 10:07:31 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Felipe Balbi <balbi@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Pavel Hofman <pavel.hofman@...tera.com>,
        Julian Scheel <julian@...st.de>,
        Ruslan Bilovol <ruslan.bilovol@...il.com>,
        Yunhao Tian <t123yh.xyz@...il.com>,
        xin lin <xin.lin@...iatek.com>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2] usb: gadget: f_uac1: add interface association
 descriptor

Il 29/06/22 04:13, Chunfeng Yun ha scritto:
> From: xin lin <xin.lin@...iatek.com>
> 
> 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 <xin.lin@...iatek.com>
> Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>