I recently found a set of PIIX chipset errata - http://www2.lm-sensors.nu/~lm78/pdfs/PIIX4-addendum.pdf. I note the following USB related issues.
4. USB Bandwidth Reclamation Errata This seems to be required, but (AFAICT) is not being applied in either driver. 7. USB Rise / Fall Time Matching No impact. 8. System Resume on USB OC# Assertion No impact. 9. PCI Arbiter Advances when PC/PCI ISA Master Gets Retried by the Host Controller No impact. 11. USB-PCI Latency This is a crap bit of design, but can only be fixed in other drivers. 13. USB Resume from Selective Suspend No impact, until we get into serious power management support. 14. IRQ9OUT# is Active HI This might explain why some people have "noapic" type problems on IRQ9. Probably needs to be hacked into the PCI drivers. The referenced errata isn't especially current, and only affects some early steppings. But it might be worth a look for UHCI support. Brad _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
