linux-kernel - Re: dwc2_hc_chhltd_intr_dma

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Date:   Mon, 3 Apr 2017 05:23:08 +0000
From:   John Youn <John.Youn@...opsys.com>
To:     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>,
        Minas Harutyunyan <Minas.Harutyunyan@...opsys.com>
Subject: Re: dwc2_hc_chhltd_intr_dma - ChHltd set errors?

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