usb: xhci: Complete 'error mid TD' transfers when handling Missed Service

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[ Upstream commit bfa8459942 ]

Missed Service Error after an error mid TD means that the failed TD has
already been passed by the xHC without acknowledgment of the final TRB,
a known hardware bug. So don't wait any more and give back the TD.

Reproduced on NEC uPD720200 under conditions of ludicrously bad USB link
quality, confirmed to behave as expected using dynamic debug.

Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20250306144954.3507700-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Michal Pecio 2025-03-06 16:49:43 +02:00 • committed by Greg Kroah-Hartman

parent 66046b586c

commit cbfa55bda1

1 changed files with 5 additions and 1 deletions

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drivers/usb/host/xhci-ring.c

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