On Wed, 20 Dec 2006, Pete Zaitcev wrote:
> On Wed, 20 Dec 2006 10:04:01 -0500 (EST), Alan Stern <[EMAIL PROTECTED]>
> wrote:
>
> > > Assuming x86 32, -115 = -EINPROGRESS, that means URB still pending, no
> > > results yet
> >
> > All successful Submission ('S') lines will contain this code.
> >
> > > > e.g. status code "-2"
> > >
> > > -2 = -ENOENT, specified interface or endpoint does not exist or is not
> > > enabled
> >
> > That's would the code would mean if it appeared on a Submission line. But
> > when it appears on a Completion ('C') line it means "URB was synchronously
> > unlinked by usb_unlink_urb".
>
> I hate to disappoint you, Alan, but this is not how usbmon works.
> Errors in submission are reported with 'E' event immediately after
> the submission. So the monitoring application sees 'S' (which is
> always successful, the status should be always ignored), and
> possibly 'E'.
You're right. I should have said "That's what the code would mean if it
appeared on an Error-in-submission ('E') line."
It remains true that -ENOENT on a Completion line means "URB was
synchronously unlinked by usb_unlink_urb".
Alan Stern
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