linux-kernel - Re: [PATCH] usb: gadget: f_fs: Fix kernel panic for SuperSpeed

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Date:	Fri, 29 Apr 2016 18:28:22 +0300
From:	Mathias Nyman <mathias.nyman@...ux.intel.com>
To:	Felipe Balbi <balbi@...nel.org>, Jim Lin <jilin@...dia.com>
CC:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: gadget: f_fs: Fix kernel panic for SuperSpeed

On 28.04.2016 15:21, Felipe Balbi wrote:
>
> Hi,
>
>> dmesg from PC host side (after adding your change without my patch):
>>
>> [17907.984647] usb 6-2: new SuperSpeed USB device number 54 using xhci_hcd
>> [17908.012036] usb 6-2: No SuperSpeed endpoint companion for config 1
>> interface 1 altsetting 0 ep 2: using minimum values
>> [17908.012040] usb 6-2: No SuperSpeed endpoint companion for config 1
>> interface 1 altsetting 0 ep 131: using minimum values
>> [17908.013652] usb 6-2: New USB device found, idVendor=xxxx, idProduct=xxxx
>> [17908.013656] usb 6-2: New USB device strings: Mfr=1, Product=2,
>> SerialNumber=3
>> [17908.013658] usb 6-2: Product: xxxxxxx
>> [17908.013661] usb 6-2: Manufacturer: xxxxxx
>> [17908.013664] usb 6-2: SerialNumber: 1234567890
>> [17908.014680] xhci_hcd 0000:05:00.0: ERROR: unexpected command
>> completion code 0x11.
>
> hmmm... completed with unknown code ? Odd. Mathias, any idea what this
> is ?
>

Parameter error, xhci doesn't like one of the values in one of the contexts we
give it (slot context, endpoint context etc)

-Mathias