On Mon, 31 May 2004, Michael Mauch wrote:
Alan Stern wrote:
If that works okay, try replacing just the OHCI driver in 2.6.7 with the 2.6.6 version. That's drivers/usb/host/ohci*.[ch].
With that (and wait_ms copied into usb.h), it works, too! I extracted a fresh kernel tarball and made the changes there, so I'm sure I copied only the ohci*.[ch].
If you're willing to do some more experiments, you could try comparing the 2.6.6 and 2.6.7 versions of that driver. There probably aren't very many changes; maybe you can pin down the change that's responsible for your problem.
I'm not sure I can imagine how any of the OHCI changes would have that kind of impact: specific to the one storage device. (The changes I've sent in all relate to suspend/resume, which wasn't involved in the traces that Michael sent.)
My first suspicion would be that something else changed which happened to make trouble.
Michael:
Is there a (read-only) CVS server where I could pull the changesets between 2.6.6 and 2.6.7-rc1 and narrow the problem down? Or do I have to get bitkeeper (and learn it, of course)?
You can browse changesets on-line at linux.bkbits.net; go to the source files you're interested in, and click on the changesets that seem to be of interest. Unfortunately it's not obvious when the releases happened when you browse that way.
- Dave
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