From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 EB61123B3 for ; Sun, 5 Nov 2023 12:49:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="WeRFSouX" Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8FBE1DD for ; Sun, 5 Nov 2023 04:49:12 -0800 (PST) Received: by mail-ej1-x631.google.com with SMTP id a640c23a62f3a-9d0b4dfd60dso526424666b.1 for ; Sun, 05 Nov 2023 04:49:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1699188551; x=1699793351; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:to:from:date:from:to:cc:subject:date:message-id :reply-to; bh=WJtBo0s1r43/zhVvDtgXi+MH/bthkEpblSiSvDSVPfE=; b=WeRFSouXvKIegi++Wvr7FiLfKlyjHcx1ryjtP2waEWMMbU7aClhIRIxPFfeM3qZoR3 qJMzIfdJVgyK8kx030wFDs2+3i7NazRZTWc95V/7yOunb3VX1Pq7JKNII0kc6m98z6WA J7O1rU9iyLNq17KVvKb7h29+s77bT8eboEMkEHaZoDhynA085t2vWGpC0KIUaQqUjLEe 6IDidfq131XTObNobODu4mr8J9OV30UoTBW8ng4e37Ws8cSO8RlMhfGochrb5x3peFl9 B7C8H4O9ouhpjy2mGynQ6DYyz3nKik3vFgi5929u1dzVrEjWjRkQU2bBk9JmXb3/NJoO OjnA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699188551; x=1699793351; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=WJtBo0s1r43/zhVvDtgXi+MH/bthkEpblSiSvDSVPfE=; b=luTf+mfx+HbgoOO6g2Xozz8wCUDfoDEjddVszd1+FEe7DRQQSFskGDRkwAyjQ1NRa2 3fpsRqvbxfMUWlJdhFQNfYsTS5QdrDJn9nl2te9GcOSjQjki/jTsiiq4iinLSV4kp993 khN2ALVKWS/8do2HCLl47NfmgA2c+idOWkZyiuLd6ux1XGWpyyK1dpNoAG57FnDlzKun 2R5IFaNR4UHGxrChwQJr49FONHFTArh7U5kHQU1sYzyPs5mg/2pxfYRLyFzghxb+lHAb 4Sh8iIx6sJ2IIz3RyPscpdyNw7OHWBtezWCrwTH9wZvaq/fLZMMkKXh0Ej+c8YCa+akd +AYw== X-Gm-Message-State: AOJu0YyETT5gnH6h2PFj1e3uIm6Twq4euMRdssw54xKdcGnWnKgIgsue PrgOMx1HxtMVdoCyjYJtNkV4+WRHuHo= X-Google-Smtp-Source: AGHT+IHcShADPASV2Qciff3v/jjGKNtgn1fJ7uxNEOHNw7neObIyvYiYxk3FrYShpk/hoApCC8wMzQ== X-Received: by 2002:a17:906:c144:b0:9dd:67db:1f36 with SMTP id dp4-20020a170906c14400b009dd67db1f36mr5214464ejc.42.1699188550894; Sun, 05 Nov 2023 04:49:10 -0800 (PST) Received: from ping (dynamic-2a01-0c23-614a-dd00-ee41-07a6-62dd-2930.c23.pool.telefonica.de. [2a01:c23:614a:dd00:ee41:7a6:62dd:2930]) by smtp.gmail.com with ESMTPSA id l26-20020a1709062a9a00b009829d2e892csm3040279eje.15.2023.11.05.04.49.10 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Nov 2023 04:49:10 -0800 (PST) Date: Sun, 5 Nov 2023 13:49:09 +0100 From: Fabian Melzow To: linux-usb@vger.kernel.org Subject: Re: 0bda:b812 USB "3.0" WLAN devices only report a maximum of 480 Mbps Message-ID: <20231105134909.6c3f28d1@ping> In-Reply-To: <2023110540-unseemly-mobilize-9e82@gregkh> References: <20231105130215.2b669c8b@ping> <2023110540-unseemly-mobilize-9e82@gregkh> X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; x86_64-pc-linux-gnu) 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=US-ASCII Content-Transfer-Encoding: 7bit Am Sun, 5 Nov 2023 13:20:38 +0100 schrieb Greg KH : > On Sun, Nov 05, 2023 at 01:02:15PM +0100, Fabian Melzow wrote: > > These devices should report 5 Gbps for USB 3.0 in the Binary Object > > Store Descriptor, but don't do so. > > Why do you think these should report 5 Gbps? If the device descriptor > does not show it, there's nothing that we can do about it in the > operating system, sorry. Thanks. I don't look at the USB specification for USB >2.0, which was long times ago and then only for a user space program and thought that it at least theoretically could be possible to set the device speed at some kind of initialization. > > Maybe it is possible to add a software fix for this hardware > > problem, so I report it here. > > What exactly is the hardware problem? What is not working "properly" > for them? All 0bda:b812 USB-WLAN-devices seems to only operate at 480 Mbps, but have a WLAN-chip which supports 780 Mbps at maximum.