linux-kernel - Re: [PATCH] USB: add USB test and measurement class driver

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Date:	Thu, 28 Aug 2008 18:58:41 +0200
From:	Marcel Janssen <korgull@...e.nl>
To:	Greg KH <greg@...ah.com>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Oliver Neukum <oliver@...kum.org>,
	USB list <linux-usb@...r.kernel.org>,
	Stefan Kopp <stefan_kopp@...lent.com>,
	Felipe Balbi <me@...ipebalbi.com>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] USB: add USB test and measurement class driver - round 2

On Thursday 28 August 2008 01:47:20 Greg KH wrote:
> Great, all done now.
>
> Here's the updated version.

I've just installed this version.

Here's what I see so far :

The driver inserts well and when I connect my device it shows /dev/usbtmc0 
with major 180 and minor 176.
It only creates one device (Stefan's driver created two) but I'm not sure if 
that has changed for a reason so just let you know.

When I disconnect my device, usbtmc0 will not be destroyed. After connecting 
the device a couple of times I have a lot of /dev/usbtmc.. files.

I would expect the following to work :
echo :*IDN?>/dev/usbtmc0
But it returns : No such device

Using echo and cat to test the device is quite convenient, but is this 
supposed to work yet ?

I checked /sys a bit and found that the endpoints are correctly found.    

I also had an issue applying the patch (documentation and makefile). Not sure 
if that's related to my system though, I'll check that later.

regards,
Marcel

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