From: Philipp Zabel <p.zabel@pengutronix.de>
To: Jan Schmidt <jan@centricular.com>, linux-usb@vger.kernel.org
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Subject: Re: [PATCH] xhci: Check all endpoints for LPM timeout
Date: Thu, 12 Sep 2019 17:14:38 +0200 [thread overview]
Message-ID: <1568301278.3069.7.camel@pengutronix.de> (raw)
In-Reply-To: <20190912144921.368-1-jan@centricular.com>
On Fri, 2019-09-13 at 00:49 +1000, Jan Schmidt wrote:
> If an endpoint is encountered that returns USB3_LPM_DEVICE_INITIATED, keep
> checking further endpoints, as there might be periodic endpoints later
> that return USB3_LPM_DISABLED due to shorter service intervals.
>
> Without this, the code can set too high a maximum-exit-latency and
> prevent the use of multiple USB3 cameras that should be able to work.
>
> Signed-off-by: Jan Schmidt <jan@centricular.com>
> Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
This fixes the capture from multiple Oculus Sensors, as described in the
"Not enough bandwidth with Magewell XI100DUSB-HDMI" thread:
https://lore.kernel.org/linux-usb/CA+gwMce-h9LPCv1hhfEcRz_2w9mEQLOjy42dcjvPxTeawSU5kQ@mail.gmail.com/
regards
Philipp
next prev parent reply other threads:[~2019-09-12 15:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-12 14:49 [PATCH] xhci: Check all endpoints for LPM timeout Jan Schmidt
2019-09-12 15:14 ` Philipp Zabel [this message]
2019-09-13 12:58 ` Mathias Nyman
2019-09-13 13:46 ` Jan Schmidt
2019-09-17 14:53 ` [RFT PATCH] xhci: Prevent device initiated U1/U2 link pm if exit latency is too long Mathias Nyman
2019-09-17 15:56 ` Jan Schmidt
2019-09-18 12:46 ` Mathias Nyman
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