From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan Dumon <j.dumon@option.com>
Subject: Re: [Bugme-new] [Bug 13803] New: hso: Tx timed out.
Date: Thu, 30 Jul 2009 14:59:10 +0200
Message-ID: <4A71991E.90308@option.com>
References: <bug-13803-10286@http.bugzilla.kernel.org/>	 <20090723154337.709ca0cd.akpm@linux-foundation.org> <6a2e33620907250356o7a50108jfe59ae5e17aec03c@mail.gmail.com>
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Cc: Jan Dumon <j.dumon@option.com>, linux-usb@vger.kernel.org,
	netdev@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org,
	bugme-daemon@bugzilla.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>
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Is still possible to send AT commands and get any network traffic through once this problem 
occurred, or is there no communication at all possible with the module ?

Can you try again with debug enabled (module parameter debug=0x1F) ?

Since it works on USB 1.1 but not on USB 2.0, my first guess would be that there's something wrong 
with the host controller or the host controller driver.