linux-kernel - Re: Is anyone maintaining (or even using) usbtmc?

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Date:	Thu, 6 Aug 2009 12:55:05 -0700
From:	Greg KH <greg@...ah.com>
To:	Andrew Lutomirski <luto@....edu>
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	gregkh@...e.de
Subject: Re: Is anyone maintaining (or even using) usbtmc?

On Mon, Aug 03, 2009 at 07:00:47PM -0400, Andrew Lutomirski wrote:
> On Mon, Aug 3, 2009 at 6:01 PM, Andrew Lutomirski<luto@....edu> wrote:
> > On Mon, Aug 3, 2009 at 5:49 PM, Andrew Lutomirski<luto@....edu> wrote:
> >> On Mon, Aug 3, 2009 at 5:20 PM, Greg KH<greg@...ah.com> wrote:
> >>> On Mon, Aug 03, 2009 at 05:14:56PM -0400, Andrew Lutomirski wrote:
> >>>> Hi all-
> >>>>
> >>>> I'm trying to use usbtmc on an Aglient N9310A (The only TMC device I
> >>>> have), and it sort of works, but it seems to be both extremely buggy
> >>>> and missing a good deal of rather important functionality.  Is there
> >>>> anyone maintaining it?
> >>>
> >>> Yes, me.
> >>>
> >>>> If the answer is yes, I can describe the bugs (logspam, spurious
> >>>> errors, delayed messages, inability to read status, etc.) in greater
> >>>> detail.
> >>>
> >>> Please do, but also please use the latest version, in 2.6.30.3, we fixed
> >>> some bad problems in it recently.
> >>
> >> I am.
> >>
> >> Almost anything I do triggers this:
> >>
> >> usbtmc 3-1:1.0: Unable to read data, error -110
> >>
> 
> My N9310A is now totally wedged.  Anything I can think of doing (send
> queries, send *RST, or any of the CLEAR ioctls) fails and spews stuff
> like this:
> 
> [360946.881771] usbtmc 3-1:1.0: Unable to send data, error -110
> [360946.890770] usbtmc 3-1:1.0: usb_bulk_msg returned -110
> [360965.303400] usb 3-1: usb_control_msg returned -110
> [360965.312404] usb 3-1: usb_control_msg returned -110
> [361052.364626] usbtmc 3-1:1.0: usb_bulk_msg returned -110
> [361055.114579] usbtmc 3-1:1.0: Unable to send data, error -110
> [361055.123574] usbtmc 3-1:1.0: usb_bulk_msg returned -110
> 
> I'm going to leave it like this in case you want me to try something.

I really don't know, sorry.  Bad firmware on the device?

odd.

greg k-h
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