On Thu, Nov 19, 2015 at 11:35 PM, Jarkko Nikula
<jarkko.nikula@xxxxxxxxxxxxxxx> wrote:
> Hi
>
>
> On 11/19/2015 10:39 PM, Andy Lutomirski wrote:
>>
>> On Thu, Nov 19, 2015 at 8:57 AM, Andy Lutomirski <luto@xxxxxxxxxxxxxx>
>> wrote:
>>>
>>> On Thu, Nov 19, 2015 at 7:56 AM, Andy Lutomirski <luto@xxxxxxxxxx> wrote:
>>>>
>>>> I unloaded and reloaded hid_multitouch (on a Skylake laptop where the
>>>> HID device is behind an integrated designware controller) and I got:
>>>>
>>>> [39545.054684] i2c_hid i2c-DLL0704:01: failed to retrieve report from
>>>> device.
>>>> [39545.061728] i2c_designware i2c_designware.1:
>>>> i2c_dw_handle_tx_abort: lost arbitration
>>>> [39545.061734] i2c_hid i2c-DLL0704:01: failed to retrieve report from
>>>> device.
>>>> [39545.061944] i2c_hid i2c-DLL0704:01: failed to retrieve report from
>>>> device.
>>>> [39545.062373] i2c_hid i2c-DLL0704:01: error in i2c_hid_init_report
>>>> size:6 / ret_size:4
>>>> [39545.062564] i2c_hid i2c-DLL0704:01: failed to retrieve report from
>>>> device.
>>>> [39545.062636] input: DLL0704:01 06CB:76AE UNKNOWN as
>>>>
>>>> /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-7/i2c-DLL0704:01/0018:06CB:76AE.0005/input/input20
>>>> [39545.063212] hid-multitouch 0018:06CB:76AE.0005: input,hidraw1:
>>>> <UNKNOWN> HID v1.00 Mouse [DLL0704:01 06CB:76AE] on
>>>> [40178.534814] i2c_hid i2c-DLL0704:01: failed to retrieve report from
>>>> device.
>>>> [40178.541848] i2c_designware i2c_designware.1:
>>>> i2c_dw_handle_tx_abort: lost arbitration
>>>> [40178.541853] i2c_hid i2c-DLL0704:01: failed to retrieve report from
>>>> device.
>>>> [40179.542135] i2c_designware i2c_designware.1: controller timed out
>>>> [40179.542166] i2c_hid i2c-DLL0704:01: failed to retrieve report from
>>>> device.
>>>> [40180.542909] i2c_designware i2c_designware.1: controller timed out
>>>> [40180.542942] i2c_hid i2c-DLL0704:01: failed to retrieve report from
>>>> device.
>>>> [40181.543697] i2c_designware i2c_designware.1: controller timed out
>>>>
>>>> after that, I just keep seeing "controller timed out" messages.
>>>>
>>>> This is Linux 4.3.0.
>>>
>>>
>>> This just happened again (after a reboot) on its own without any
>>> rmmod. Reloading the i2c_designware drivers didn't help, so I'm
>>> wondering if it's a bug lower in the stack instead.
>>>
> I guess this is either related to touch panel or bus timings (we have seen
> both cases recently) as it works here on development machine with another
> panel.
>
> Could you try does following commit from v4.4-rc1 help?
>
> 6d4f5440a3a2 ("HID: multitouch: Fetch feature reports on demand for Win8
> devices")
I've been running that commit for a couple weeks and I haven't seen
the problem recur. Thanks!
--Andy
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