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Revert "usb: xhci: prevent potential failure in handle_tx_event() for Transfer events without TRB"

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This reverts commit 948554f1bb which is
commit 66cb618bf0 upstream.

In backporting it to stable kernels, it causes a severe regression on
many systems, so revert it for now.

Reported-by: Tim Lewis <elatllat@gmail.com>
Link: https://lore.kernel.org/r/CA+3zgmvct7BWib9A7O1ykUf=0nZpdbdpXBdPWOCqfPuyCT3fug@mail.gmail.com
Reported-by: <matthias@bodenbinder.de>
Link: https://lore.kernel.org/r/bug-219039-208809@https.bugzilla.kernel.org/
Cc: Niklas Neronin <niklas.neronin@linux.intel.com>
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: Michał Pecio <michal.pecio@gmail.com>
Cc: <ZeroBeat@gmx.de>
Cc: Salvatore Bonaccorso <carnil@debian.org>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2024-07-15 08:49:12 +02:00
parent 266ee8e06d
commit 1f4a10cb82
1 changed files with 2 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/usb/host/xhci-ring.c
View file

@ -2631,17 +2631,16 @@ static int handle_tx_event(struct xhci_hcd *xhci,
else
xhci_handle_halted_endpoint(xhci, ep, 0, NULL,
EP_SOFT_RESET);
break;
goto cleanup;
case COMP_RING_UNDERRUN:
case COMP_RING_OVERRUN:
case COMP_STOPPED_LENGTH_INVALID:
break;
goto cleanup;
default:
xhci_err(xhci, "ERROR Transfer event for unknown stream ring slot %u ep %u\n",
slot_id, ep_index);
goto err_out;
}
return 0;
}
/* Count current td numbers if ep->skip is set */