On Tue July 7 2009, Alan Stern wrote: > On Tue, 7 Jul 2009, Michael S. Zick wrote: > > > On Tue July 7 2009, Alan Stern wrote: > > > On Tue, 7 Jul 2009, Michael S. Zick wrote: > > > > > > > > It looks like there's a serious problem in your UHCI hardware. > > > > > According to the log you posted, it's not working at all. > > > > > > > > > > > > > I am using the x86-generic drivers - - > > > > > > Not a problem with the drivers, a problem in the hardware. > > > > > > > Or hardware that works as the manufacturer intended, but differently > > than expected. Same difference as "broken" when compared to "standard". > > No, hardware that doesn't work at all. As in "all reads return > 0xffffffff" -- that's just a guess but something like it would account > for what you saw. > Scratches head, and other parts. . . Hmm... Already known about this chipset/cpu combination; there is something about its hardware timing that is a "primary problem" - - In addition to the suggested diagnostic and suggest fix - will look into finding if that is a problem here, also. It may just be a hardware timing issue - the processor is hitting the hub before the hub has its act together from the last action. Most likely will take most of the day - unless something jumps out and says "I'm broke" during the testing. ;) Mike > For more information enable CONFIG_USB_DEBUG and CONFIG_DEBUG_FS, then > see what's sitting in the usb/uhci/* files in debugfs. > > > Let me see if I can find it again; > > 1106:3038 translates to: PCI_DEVICE_ID_VIA_82C586_2 > > 1106:3104 translates to: PCI_DEVICE_ID_VIA_8235_USB_2 > > > > The first appears in (this device is the UHCI hub in the CX700 chipset): > > arch/powerpc/platforms/85xx/mpc85xx_cds.c: case PCI_DEVICE_ID_VIA_82C586_2: > > arch/mips/pci/fixup-lm2e.c:DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, > > include/linux/pci_ids.h:#define PCI_DEVICE_ID_VIA_82C586_2 0x3038 > > Those are simple interrupt routing fixups. Not related. > > > The second appears in: > > include/linux/pci_ids.h:#define PCI_DEVICE_ID_VIA_8235_USB_2 0x3104 > > <Hmm... Dead? Not used? Never used? Source padding?> > > Probably never used. > > Alan Stern > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
