netdev - Re: [PATCH v3 3/5] net: asix: Fix AX88772x resume failures

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Message-ID: <1fff2d2a-7bbe-298c-3d27-7dc44df08675@nvidia.com>
Date:   Fri, 18 Nov 2016 15:09:43 +0000
From:   Jon Hunter <jonathanh@...dia.com>
To:     <allan@...x.com.tw>, <robert.foss@...labora.com>,
        <freddy@...x.com.tw>, <Dean_Jenkins@...tor.com>,
        <Mark_Craske@...tor.com>, <davem@...emloft.net>,
        <ivecera@...hat.com>, <john.stultz@...aro.org>,
        <vpalatin@...omium.org>, <stephen@...workplumber.org>,
        <grundler@...omium.org>, <changchias@...il.com>, <andrew@...n.ch>,
        <tremyfr@...il.com>, <colin.king@...onical.com>,
        <linux-usb@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <vpalatin@...gle.com>
Subject: Re: [PATCH v3 3/5] net: asix: Fix AX88772x resume failures

Hi Allan,

On 14/11/16 09:45, ASIX_Allan [Office] wrote:
> Hi Jon,
> 
> Please help to double check if the USB host controller of your Terga
> platform had been powered OFF while running the ax88772_suspend() routine or
> not? 

Sorry for the delay. Today I set up a local board to reproduce this on
and was able to recreate the same problem. The Tegra xhci driver does
not power off during suspend and simply calls xhci_suspend(). I also
checked vbus to see if it was turning off but it is not. Furthermore I
don't see a new USB device detected after the error and so I don't see
any evidence that it ever disconnects.

Cheers
Jon

-- 
nvpublic