linux-kernel - Re: dwc2_hc_chhltd_intr_dma

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Message-ID: <410670D7E743164D87FA6160E7907A56FD9F691E@am04wembxb.internal.synopsys.com>
Date:   Mon, 3 Apr 2017 12:54:53 +0000
From:   Minas Harutyunyan <Minas.Harutyunyan@...opsys.com>
To:     John Youn <John.Youn@...opsys.com>,
        John Stultz <john.stultz@...aro.org>,
        John Youn <John.Youn@...opsys.com>
CC:     lkml <linux-kernel@...r.kernel.org>,
        YongQin Liu <yongqin.liu@...aro.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: Re: dwc2_hc_chhltd_intr_dma - ChHltd set errors?

Hi,

On 4/3/2017 9:23 AM, John Youn wrote:
> On 03/31/2017 04:04 PM, John Stultz wrote:
>> On Thu, Mar 2, 2017 at 12:00 PM, John Stultz <john.stultz@...aro.org> wrote:
>>> Hey John,
>>>   We've noticed that when using usb ethernet adapters on HiKey, we
>>> occasionally see errors like:
>>>
>>> dwc2 f72c0000.usb: dwc2_hc_chhltd_intr_dma: Channel 0 - ChHltd set,
>>> but reason is unknown
>>> dwc2 f72c0000.usb: hcint 0x00000002, intsts 0x06200029
>>>
>>> dwc2 f72c0000.usb: dwc2_hc_chhltd_intr_dma: Channel 11 - ChHltd set,
>>> but reason is unknown
>>> dwc2 f72c0000.usb: hcint 0x00000002, intsts 0x04200029
>>>
>>> Sometimes followed up by a usb error in the driver, something like:
>>> asix 1-1.2:1.0 eth0: asix_rx_fixup() Bad Header Length 0x36000807, offset 68
>>>
>>> Curious if you've seen any reports like this?
>>
>> Hey John,
>>   Just wanted to check in again on this to see if you've seen anything
>> like it? I've not had too much time to debug it, but my attempts so
>> far haven't been productive.
>>
>
> I don't think I've seen that.
>
> We'll try to take a look this week.
>
> Thanks,
> John
>
>
>

The core version is less than 2.71a, am I right?
Please send full debug log to do more investigation.
Also send us regdump after connecting ethernet adapter.

Thanks,
Minas