netdev - Re: [PATCH] usbnet: prevent device rpm suspend in usbnet

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Message-ID: <CAAd53p5=xLJR=cLwLstjmgdEg_Nr2JHUWDFa218Dhn50F_NH8g@mail.gmail.com>
Date:   Tue, 8 Nov 2016 15:46:03 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     Oliver Neukum <oneukum@...e.com>
Cc:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH] usbnet: prevent device rpm suspend in usbnet_probe function

Hi,

On Mon, Nov 7, 2016 at 7:02 PM, Oliver Neukum <oneukum@...e.com> wrote:
> On Fri, 2016-11-04 at 17:57 +0800, Kai-Heng Feng wrote:
>> Sometimes cdc_mbim failed to probe if runtime pm is enabled:
>> [    9.305626] cdc_mbim: probe of 2-2:1.12 failed with error -22
>>
>> This can be solved by increase its pm usage counter.
>>
>> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
>
> For the record:
>
> NAK. This fixes a symptom. If this patch helps something is broken in
> device core. We need to find that.
>

Please check attached dmesg with usbcore.dyndbg="+p".

Thanks!

>         Regards
>                 Oliver
>
>

Download attachment "dmesg" of type "application/octet-stream" (76965 bytes)