linux-kernel - RE: [PATCH v3] usb: dwc3: core: Add quirk for enabling AutoRetry feature in the controller

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Message-ID: <MWHPR02MB2816BCF2F19A0D7DA70A6E53A72A0@MWHPR02MB2816.namprd02.prod.outlook.com>
Date:   Fri, 27 Jul 2018 07:34:23 +0000
From:   Anurag Kumar Vulisha <anuragku@...inx.com>
To:     Felipe Balbi <balbi@...nel.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
CC:     "v.anuragkumar@...il.com" <v.anuragkumar@...il.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3] usb: dwc3: core: Add quirk for enabling AutoRetry
 feature in the controller

Hi Felipe,

>Hi,
>
>Anurag Kumar Vulisha <anurag.kumar.vulisha@...inx.com> writes:
>> By default when core sees any transaction error(CRC or overflow) it
>> replies with terminating retry ACK (Retry=1 and Nump == 0).
>> Enabling this Auto Retry feature in controller, on seeing any
>> transaction errors makes the core to send a non-terminating ACK
>> transaction packet (that is, ACK TP with Retry=1 and Nump != 0).
>> Doing so will give controller a chance to recover from the error
>> condition.
>>
>> Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@...inx.com>
>> ---
>
>subject line is misleading, at best. You're not adding any quirks.
>
Oops !  Will fix this and send another version

Thanks,
Anurag Kumar Vulisha
>--
>balbi