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Date: Sat, 19 Oct 2024 08:34:24 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Faisal Hassan <quic_faisalh@quicinc.com>
Cc: Mathias Nyman <mathias.nyman@intel.com>, linux-usb@vger.kernel.org,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] xhci: Fix Link TRB DMA in command ring stopped
 completion event
Message-ID: <2024101914-upheld-dander-d1af@gregkh>
References: <20241018195953.12315-1-quic_faisalh@quicinc.com>
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In-Reply-To: <20241018195953.12315-1-quic_faisalh@quicinc.com>

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