Re: [PATCH v3] xhci: Fix Link TRB DMA in command ring stopped completion event

[Mathias Nyman <mathias.nyman@linux.intel.com>]

On 22.10.2024 18.56, Faisal Hassan wrote:
> During the aborting of a command, the software receives a command
> completion event for the command ring stopped, with the TRB pointing
> to the next TRB after the aborted command.
> 
> If the command we abort is located just before the Link TRB in the
> command ring, then during the 'command ring stopped' completion event,
> the xHC gives the Link TRB in the event's cmd DMA, which causes a
> mismatch in handling command completion event.
> 
> To address this situation, move the 'command ring stopped' completion
> event check slightly earlier, since the specific command it stopped
> on isn't of significant concern.
> 
> Fixes: 7f84eef0dafb ("USB: xhci: No-op command queueing and irq handler.")
> Cc: stable@vger.kernel.org
> Signed-off-by: Faisal Hassan <quic_faisalh@quicinc.com>

Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>

Greg, would you like to take this directly to usb-linus (6.12)?
If not I'll send it as part of series to usb-next later

Thanks
Mathias