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
Date: Sat, 19 Oct 2024 08:34:24 +0200 [thread overview]
Message-ID: <2024101914-upheld-dander-d1af@gregkh> (raw)
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
next prev parent reply other threads:[~2024-10-19 6:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-18 19:59 [PATCH] xhci: Fix Link TRB DMA in command ring stopped completion event Faisal Hassan
2024-10-19 6:34 ` Greg Kroah-Hartman [this message]
2024-10-19 17:23 ` Faisal Hassan
2024-10-19 7:20 ` Michał Pecio
2024-10-19 17:52 ` Faisal Hassan
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