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From: Greg KH <gregkh@linuxfoundation.org>
To: "Johannes Brüderl" <johannes.bruederl@gmail.com>
Cc: linux-usb@vger.kernel.org, larsm17@gmail.com
Subject: Re: [PATCH v3 1/1] usb: core: add USB_QUIRK_NO_BOS for devices that hang on BOS descriptor
Date: Wed, 7 Jan 2026 17:06:42 +0100	[thread overview]
Message-ID: <2026010722-desecrate-tribunal-9934@gregkh> (raw)
In-Reply-To: <20251207090220.14807-1-johannes.bruederl@gmail.com>

On Sun, Dec 07, 2025 at 10:02:20AM +0100, Johannes Brüderl wrote:
> Add USB_QUIRK_NO_BOS quirk flag to skip requesting the BOS descriptor
> for devices that cannot handle it.
> 
> Add Elgato 4K X (0fd9:009b) to the quirk table. This device hangs when
> the BOS descriptor is requested at SuperSpeed Plus (10Gbps).
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=220027
> Signed-off-by: Johannes Brüderl <johannes.bruederl@gmail.com>
> ---
> Hi Lars,
> you are right, good catch! This should be correctly sorted now.
> 
> v3: Move quirk entry to correct position in sorted VID:PID order.
> v2: Return -ENOMSG instead of 0 to properly indicate no BOS data.

Ok, in playing with this some more, I think this is the best thing for
now.  I'll go queue this up now.

thanks,

greg k-h

  reply	other threads:[~2026-01-07 16:06 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-07  0:00 [PATCH] usb: core: add USB_QUIRK_NO_BOS for devices that hang on BOS descriptor Johannes Brüderl
2025-12-07  0:15 ` Greg KH
2025-12-07  1:20   ` [PATCH v2] " Johannes Brüderl
2025-12-07  6:19     ` Lars Melin
2025-12-07  9:02       ` [PATCH v3 1/1] " Johannes Brüderl
2026-01-07 16:06         ` Greg KH [this message]
2025-12-07  7:40     ` [PATCH v2] " Michal Pecio
2025-12-07  9:22       ` Johannes Brüderl
2025-12-07  9:45         ` Michal Pecio
2025-12-07 10:47           ` Johannes Brüderl
2025-12-07 11:00             ` Greg KH
2025-12-07 21:12               ` Greg KH
2025-12-07 22:06                 ` Michal Pecio
2025-12-08  8:58                 ` Oliver Neukum
2025-12-08 20:46                   ` Greg KH
2025-12-28 12:54                     ` Johannes Brüderl
2025-12-28 13:18                       ` Greg KH
2025-12-07  0:37 ` [PATCH] " Michal Pecio
2025-12-07  0:59   ` Greg KH

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