linux-kernel - Re: [PATCH] xhci: Add check for invalid byte size error when UAS devices are connected.

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Message-ID: <58201720-ee34-a866-b177-084b9f36c40c@linux.intel.com>
Date:   Mon, 24 Sep 2018 16:09:59 +0300
From:   Mathias Nyman <mathias.nyman@...ux.intel.com>
To:     Sandeep Singh <Sandeep.Singh@....com>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        gregkh@...uxfoundation.org, mathias.nyman@...el.com
Cc:     Nehal Shah <Nehal-bakulchandra.Shah@....com>,
        Shyam Sundar S K <Shyam-sundar.S-k@....com>
Subject: Re: [PATCH] xhci: Add check for invalid byte size error when UAS
 devices are connected.

On 21.09.2018 16:22, Sandeep Singh wrote:
> From: Sandeep Singh <sandeep.singh@....com>
> 
> Observed "TRB completion code (27)" error which corresponds to Stopped -
> Length Invalid error(xhci spec section 4.17.4) while connecting USB to
> SATA bridge.
> 
> Looks like this case was not considered when the following patch[1] was
> committed. Hence adding this new check which can prevent
> the invalid byte size error.
> 
> [1] ade2e3a xhci: handle transfer events without TRB pointer
> 

Thanks, adding to queue.

Just out of curiosity, was the TRB pointer bits all zeroes
in this  Stopped -Length invalid transfer event TRB?

-Mathias