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xhci: add quirk for host controllers that don't update endpoint DCS
commit 5255660 upstream. Seen on a VLI VL805 PCIe to USB controller. For non-stream endpoints at least, if the xHC halts on a particular TRB due to an error then the DCS field in the Out Endpoint Context maintained by the hardware is not updated with the current cycle state. Using the quirk XHCI_EP_CTX_BROKEN_DCS and instead fetch the DCS bit from the TRB that the xHC stopped on. [ bjorn: rebased to v5.14-rc2 ] Link: raspberrypi/linux#3060 Cc: stable@vger.kernel.org Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org> Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/20211008092547.3996295-3-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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