From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 62331346A12 for ; Wed, 7 Jan 2026 16:06:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767802007; cv=none; b=OgabBbzrakNlSVXavkOD/i3Pk9F7TSWaL91uVdnkXHBgjGycDa8ndkUQvQqE2jIcMfocANRA15jfv1qDoyXC10UjrIOGoc33sMFninjyVUobPjt1pHPQ2+Taq4QoFSSsun2IO/m46IJRMtY7xB3mn9axcc7CRYdpRGxqJOBcwF0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767802007; c=relaxed/simple; bh=A3uLN2sLXFl+jQQ0nuNHBt9MpYlXFtanOmU/VazI8BM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=NsHbqDuhDhw5x9bGy0x6DG8igO2KdrsYGzIugb1ECBEvJy/98ao+AvtFclkGEjqhgNha+dSpDgGK6yTdDvSn5HsM7r45wirIg2eb/zDF2xbXJ6m9nmqvgFW3WGlB7MfwQcKJst3hvA64oazaDNCXZLgC/XpcJmABhqatp1gj6M0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=S2QrhmF6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="S2QrhmF6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E54F9C4CEF1; Wed, 7 Jan 2026 16:06:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767802005; bh=A3uLN2sLXFl+jQQ0nuNHBt9MpYlXFtanOmU/VazI8BM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=S2QrhmF6Azxqe1jX2CJSpz8TVYHRxp2Dl3ufjWYEm87oAlXLTd4yR9ok/tesAMGU8 HF1vA5S3AvvsWWgKyVfPedUlopLLI+mu6hQl3FyydrQbfobSsJ12iizqRXXL2wav6+ hyMTURhwXadDLg1y+28xLowbqpEC3PaQcUQmbFLk= Date: Wed, 7 Jan 2026 17:06:42 +0100 From: Greg KH To: Johannes =?iso-8859-1?Q?Br=FCderl?= 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 Message-ID: <2026010722-desecrate-tribunal-9934@gregkh> References: <20251207090220.14807-1-johannes.bruederl@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit 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 > --- > 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