This is an automated cleanup. This bug report has been moved to QEMU's new bug tracker on gitlab.com and thus gets marked as 'expired' now. Please continue with the discussion here:
https://gitlab.com/qemu-project/qemu/-/issues/182 ** Changed in: qemu Status: New => Expired ** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #182 https://gitlab.com/qemu-project/qemu/-/issues/182 -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1843711 Title: qemu-xhci device should detect if libusb host supports streams Status in QEMU: Expired Bug description: When using USBÂ passthrough with the qemu-xhci (and nec-usb-xhci), streams are enabled by default, but if the host xHCI controller doesn't support them, it will trigger hard-to-debug UAS guest errors. This should be possible to detect since the kernel returns ENOSYS (errno 38) when xhci host controller does not support streams: libusb: error [do_streams_ioctl] streams-ioctl failed error -1 errno 38 qemu: libusb_alloc_streams: -99 [OTHER] Maybe libusb should return a dedicated error instead of LIBUSB_ERROR_OTHER in this case, but qemu does not handle any other error code anyway. Just trying to enable streams before enabling them in qemu should do it. I don't know if it should be done in hcd-xhci.c, host-libusb.c or elsewhere, but this would be detectable at launch instead of a static option true/false, maybe a ternary with auto would be better. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1843711/+subscriptions
