On Tue, 4 Oct 2005, Yedidyah Bar-David wrote: > On Mon, Oct 03, 2005 at 05:00:23PM -0400, Alan Stern wrote: > > Okay. Maybe there was a simple change that you'll be able to find. > > Well, I took the patch between 2.6.8-rc1 and -rc2, took from it only the > changes to the files drivers/usb/*/* and include/linux/usb*, and did two > things: I applied this patch to 2.6.8-rc1 and reverse-applied it to > -rc2. The results - rc1 with the patch still works, rc2 without it > still does not work. This probably means the change that caused the > regression is elsewhere.
It could be that the regression was caused not by a single change, but by a large collection of changes that, taken together, altered the timing of the computer. > What should be my next step? I don't know. You could try binary dissection on the individual patches between -rc1 and -rc2. Here's a URL that has a list of all of them (plus a lot more, if you let the transfer go all the way): http://linux.bkbits.net:8080/linux-2.6/[EMAIL PROTECTED]|tags It would be a lot of work, though. I don't know any way to get a simple file containing all those patches. It might be possible using git. Also, you should post debugging logs showing the difference between -rc1 and -rc2. > logs: > As mentioned, all of them done with 2.6.14-rc3, config at > <http://www.cs.tau.ac.il/~didi/usb/config-2.6.14-rc3> > > All created by doing 'dmesg -c >> log' once a second, from before > plugging in to after plugging out. > > dmesg of the working machine, while plugging in and out the card reader: > <http://www.cs.tau.ac.il/~didi/usb/wcr> > working machine, plugin/out the pen: > <http://www.cs.tau.ac.il/~didi/usb/wpen> > > non-working, card reader: > <http://www.cs.tau.ac.il/~didi/usb/nwcr> > The card reader does work - that is, I can mount it and copy from it. > But unlike in the working machine, the kernel continues to try doing > something and outputs lots of stuff during that. > > non-working, pen: > <http://www.cs.tau.ac.il/~didi/usb/nwpen> > I noticed (by doing cat /proc/partitions) that it does manage to see the > device for a few seconds (probably at the time it says in the logs 'sda1 > sda3'), then looses the connection. I can't access any of these logs: Error 403. Alan Stern ------------------------------------------------------- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
