Messages in this thread | | | Date | Sun, 21 Apr 2002 19:43:10 -0700 | From | David Brownell <> | Subject | Re: 2.4.19pre2++ USB EHCI-HCD -> auto-reboot |
| |
> I need some tips on how to debug (or help others debug) a problem > I am seeing with the EHCI-HCD driver introduced in 2.4.19-pre2.
Hmm ... that "auto-reboot" has to stop before you can get much of anywhere! I've not seen that kind of failure since ehci-hcd was first starting to enumerate devices.
I'd hope that running against 2.5.8 (which has a somewhat more current EHCI driver in any case), with lots of kernel debugging features (notably slab debugging, which also poisons the pci_pool memory used by the USB HCDs), would give you a more friendly failure mode. Basically the same stuff exists on 2.4.19-pre, but you will need to tweak the PCIPOOL_DEBUG stuff in drivers/pci/pci.c to make the extra poisoning happen. KDB can help too.
Once a few more tidbits of info become available, I can help figure out what's up. (To be honest, it's been quite a while since anyone has reported anything but success with ehci-hcd. Some variety is perversely refreshing ... :)
- Dave
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |