On Jul 9, 2012, at 5:59 PM, Peter Stuge wrote: > Ian Osgood wrote: >> dmesg errors: >> xhci_hcd 0000:00:14.0: xhci_run >> xhci_hcd 0000:00:14.0: Failed to enable MSI-X >> xhci_hcd 0000:00:14.0: failed to allocate MSI entry >> xhci_hcd 0000:00:14.0: No msi-x/msi found and no IRQ in BIOS >> xhci_hcd 0000:00:14.0: startup error -22 >> xhci_hcd 0000:00:14.0: USB bus 3 deregistered >> xhci_hcd 0000:00:14.0: can't derive routing for PCI INT A >> xhci_hcd 0000:00:14.0: init 0000:00:14.0 fail, -22 >> xhci_hcd: probe of 0000:00:14.0 failed with error -22 > > Either the firmware isn't setting up interrupt routing correctly > (less common) or it is not passing correct data structures to the > kernel about how interrupt routing has been set up (very common) or > the kernel does not have support compiled-in for the particular type > of data structures specifying interrupt routing which are passed by > the firmware (there are at least four kinds, some firmware provides > all of them since different OSes understand different types, and > often the different data is inconsistent). > > The no MSI is strange though. > > Could you also send lspci -vvnn output, ran as root? > > > //Peter Actually, that was enough of a hint. We had stripped MSI out of our kernel. Once CONFIG_PCI_MSI was enabled, the external USB ports started working again. Now to figure out why that one change breaks uvesa... Ian-- 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
