linux-kernel - Re: [PATCH] usb: add QUIRK_NO

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Message-ID: <2026020536-bullseye-smugly-4361@gregkh>
Date: Thu, 5 Feb 2026 18:33:23 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: sharms <sharms@...wfoundry.com>
Cc: dev@...m4x.com, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	limiao@...inos.cn, oneukum@...e.com, huanglei@...inos.cn,
	lijiayi@...inos.cn, johannes.bruederl@...il.com
Subject: Re: [PATCH] usb: add QUIRK_NO_BOS for several devices

On Thu, Feb 05, 2026 at 10:24:32AM -0700, sharms wrote:
> From: Steve Harms <sharms@...wfoundry.com>
> 
> On Thu, Feb 05, 2026 at 07:51:17AM +0100, Greg KH wrote:
> > Ok, it looks like there is a very broken USB controller chip out there
> > in all of these devices.
> 
> Hey Greg,
> 
> I think this references the same issues as in
> https://lore.kernel.org/linux-usb/2025122837-creamlike-motivator-8dcb@gregkh/

Yes.

> There are a few of us who need 10G support for video capture with
> these devices.

Understood, and I guess they are all using the same chip in the device?
I have the one listed at the link above for testing, but it would be
really good if someone could figure out why Windows doesn't have this
problem and only Linux does...

thanks,

greg k-h