[Bug 1252] New: usb0 no longer comes up if booting with usb plugged in

[Werner Almesberger]

bugzilla-daemon at bugzilla.openmoko.org wrote:
> This is a kernel regression, it worked a couple of revisions ago.

I set up an automated test for this with and without DFU:
svn.openmoko.org/developers/werner/bug1252/

The device under test was freshly devirginated with today's files from
buildhost.

Results:

- I did find several failures for usb0 to come up, but they were generally
  caused by the kernel hanging, not an isolated USB problem.

- I did not find any evidence that DFU made things worse. To the contrary,
  the tests with DFU did a little better :-)

> usb 2-1: new full speed USB device using uhci_hcd and address 50
> usb 2-1: unable to read config index 0 descriptor/start: -110
> usb 2-1: chopping to 0 config(s)
> usb 2-1: no configuration chosen from 0 choices

I didn't see anything that looked like this, though.

Could you perhaps try and run my scripts, to see with what frequency
that problem appears or if my tests are actually suitable for reproducing
the problem ?

The hangs came from the Glamo driver. I'll describe them in a separate
mail.

- Werner