From: Junjie Cao <junjie.cao@intel.com>

Peter's discussion of isochronous endpoint mismatches highlighted the
lack of tests as a concern for moving the checks into the USB core [1].
This series adds transfer tests motivated by that discussion, without
changing controller or USB core code.

The tests cover EHCI control transfers and isochronous IN/OUT requests
to EP0, UHCI interrupt retries and isochronous completion on NAK, and
successful UHCI/xHCI isochronous OUT transfers to USB audio. The audio
tests configure the device and enable its streaming interface through
EP0 before submitting a packet.

These cases exercise both rejection/retry behavior and successful
isochronous transfers. EHCI isochronous success and USB_RET_ASYNC
completion remain outside the coverage of this series.

Suggestions for other transfer paths to cover in follow-up patches
are welcome.

[1] https://lore.kernel.org/qemu-devel/CAFEAcA8jcNzVT9QuFfog4GZRWt8ZpysKbOy9R-SxmtTrAZ67JQ@mail.gmail.com/

Junjie Cao (7):
  tests/qtest/usb-hcd-ehci: Test a control transfer
  tests/qtest/usb-hcd-ehci: Cover isochronous IN to EP0
  tests/qtest/usb-hcd-ehci: Cover isochronous OUT to EP0
  tests/qtest/usb-hcd-uhci: Test interrupt NAK retries
  tests/qtest/usb-hcd-uhci: Test isochronous NAK completion
  tests/qtest/usb-hcd-uhci: Test a successful isochronous transfer
  tests/qtest/usb-hcd-xhci: Test a successful isochronous transfer

 tests/qtest/usb-hcd-ehci-test.c | 208 +++++++++++++++++++++++++++++
 tests/qtest/usb-hcd-uhci-test.c | 229 ++++++++++++++++++++++++++++++++
 tests/qtest/usb-hcd-xhci-test.c |  95 ++++++++++++-
 3 files changed, 526 insertions(+), 6 deletions(-)


base-commit: ed698be7700160c74d24ef7830adccd2a28d840a
-- 
2.43.0