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

On Sat, Oct 19, 2024 at 01:29:53AM +0530, 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 handle this situation, an additional check has been added to ignore the mismatch error and continue the operation.

Cc: stable@vger.kernel.org Signed-off-by: Faisal Hassan quic_faisalh@quicinc.com

What commit id does this fix?

thanks,

greg k-h