From: Felipe Balbi <balbi@kernel.org>
To: Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
linux-usb@vger.kernel.org
Cc: John Youn <John.Youn@synopsys.com>
Subject: Re: [PATCH v2 0/4] usb: dwc3: gadget: Improve isoc starting mechanism
Date: Mon, 30 Mar 2020 11:15:00 +0300 [thread overview]
Message-ID: <87k1322r97.fsf@kernel.org> (raw)
In-Reply-To: <cover.1585523081.git.thinhn@synopsys.com>
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Thinh Nguyen <Thinh.Nguyen@synopsys.com> writes:
> Currently we use the "retry" method to issue START_TRANSFER command multiple
> times, each with a next interval. There's been report that 5 number of retries
> may not be enough. See https://lkml.org/lkml/2019/11/11/535
>
> We could increase the number of retries. However, that also may not be enough
> depending on different system latency. It is not often that the latency is
> higher than 5 isoc intervals. If it goes beyond 5 intervals, let's restart the
> whole process again.
>
>
> Changes in v2:
> - Include patch "usb: dwc3: gadget: WARN on no-resource status" to this series
>
> Thinh Nguyen (4):
> usb: dwc3: gadget: Properly handle failed kick_transfer
> usb: dwc3: gadget: Store resource index of start cmd
> usb: dwc3: gadget: Issue END_TRANSFER to retry isoc transfer
> usb: dwc3: gadget: WARN on no-resource status
all in testing/next now
--
balbi
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prev parent reply other threads:[~2020-03-30 8:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-29 23:12 [PATCH v2 0/4] usb: dwc3: gadget: Improve isoc starting mechanism Thinh Nguyen
2020-03-29 23:12 ` [PATCH v2 1/4] usb: dwc3: gadget: Properly handle failed kick_transfer Thinh Nguyen
2020-03-29 23:13 ` [PATCH v2 2/4] usb: dwc3: gadget: Store resource index of start cmd Thinh Nguyen
2020-03-29 23:13 ` [PATCH v2 3/4] usb: dwc3: gadget: Issue END_TRANSFER to retry isoc transfer Thinh Nguyen
2020-03-29 23:13 ` [PATCH v2 4/4] usb: dwc3: gadget: WARN on no-resource status Thinh Nguyen
2020-03-30 8:15 ` Felipe Balbi [this message]
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