I have several systems that are failing with the messages below when the uhci-hcd module is loaded. This only seems to happen when the QHs and/or TDs (I haven't narrowed this down yet) are at a physical address above roughly 2.5GB. If I limit the memory with a "mem=2500m" command line, or if I modify the driver to ensure that all of the QHs and TDs are mapped below that address, uhci-hcd loads fine.
I am seeing this problem with a Red Hat kernel based on a 2.6.5 kernel, but I assume this would happen on a non-Red Hat kernel as well. Since the host controller process error is supposed to indicate that the host controller thinks there's something wrong with the TD, I'm guessing that maybe the HC can't access memory at certain regions, but I've checked the chipset registers, and I don't see anything. Also, I'm seeing this on two completely different systems--one with an ICH3, and one with an ICH5. The error is seen on the first IRQ that comes back after the host controller is started, and there are no USB devices plugged in. Any idea what might be causing this? Is anyone else seeing this? ------------------------------------------------------------------------ -------------------------- May 25 11:54:20 discovery kernel: uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 1 May 25 11:54:20 discovery kernel: uhci_hcd 0000:00:1d.0: host controller process error, something bad happened! May 25 11:54:20 discovery: uhci_hcd 0000:00:1d.0: host controller halted, very bad! ------------------------------------------------------------------------ -------------------------- Thanks Stuart ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
