linux-kernel - Re: [PATCH] usb: gadget: composite: fill bcdUSB as 0x0320 for SuperSpeed or higher speeds

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Message-ID: <87efid9yec.fsf@linux.intel.com>
Date:   Tue, 15 May 2018 10:22:03 +0300
From:   Felipe Balbi <felipe.balbi@...ux.intel.com>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] usb: gadget: composite: fill bcdUSB as 0x0320 for SuperSpeed or higher speeds


Hi,

Chunfeng Yun <chunfeng.yun@...iatek.com> writes:
> On Wed, 2018-05-09 at 14:33 +0300, Felipe Balbi wrote:
>> Hi,
>> 
>> Chunfeng Yun <chunfeng.yun@...iatek.com> writes:
>> > The USB3CV version 2.1.80 (March 26, 2018) requires all devices
>> > ( gen1, gen2, single lane, dual lane) to return the value of 0x0320
>> > in the bcdUSB field
>> 
>> this sounds really odd. What happens when I get a USB 3.1 compliant
>> device off-the-shelf and run it through USB3CV? will it fail now?
> Yes, it will fail, the last version requires it 0x0310
>> 
>> Care to share a screenshot or the raw html of the test result?
> A screenshot is attached

really odd. But I'll apply the patch.

thanks

-- 
balbi

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