From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757726Ab0BDJMl (ORCPT ); Thu, 4 Feb 2010 04:12:41 -0500 Received: from smtp.witbe.net ([81.88.96.48]:47148 "EHLO smtp.witbe.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756798Ab0BDJMh convert rfc822-to-8bit (ORCPT ); Thu, 4 Feb 2010 04:12:37 -0500 X-Greylist: delayed 821 seconds by postgrey-1.27 at vger.kernel.org; Thu, 04 Feb 2010 04:12:37 EST Date: Thu, 4 Feb 2010 09:58:55 +0100 From: Paul Rolland To: LKML Subject: usbserial speed limitations ? Message-ID: <20100204095855.10993d1a@tux.DEF.witbe.net> Organization: AS2917.net X-Mailer: Claws Mail 3.7.5 (GTK+ 2.16.6; x86_64-unknown-linux-gnu) Face: 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 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, I'm about to start working with a new USB 3G+ modem (Novatel Wireless M996D), details : Product ID: 0x5023 Vendor ID: 0x1410 (Novatel Wireless, Inc.) Version: 0.00 Speed: Up to 480 Mb/sec Manufacturer: Novatel Wireless, Inc >>From the manufacturer web site, regarding the installation, I can read : "Maximum connection speed is limited by the current generic usbserial driver to approximately less than 500kbps." Is there really such a speed limitation in the usbserial module/driver ? This modem is HSPA+, which should allow a theorical maximum downspeed of 20MBps, not 500kbps... The machine intended for such use in 2.6.28.x. Is there any chance to have something better with a newer kernel ? Any help / hint appreciated... Regards, Paul