tree e48827e22cf644c746c3aa05f456dd201b83c799
parent 5d084e9710a02d7cf4f6c667f6fe84acdbb286ef
author Thinh Nguyen <Thinh.Nguyen@synopsys.com> 1646708396 -0800
committer Dan Vacura <w36195@motorola.com> 1652202378 -0500

UPSTREAM: usb: dwc3: gadget: Give some time to schedule isoc

Currently the driver will schedule isoc transfers immediately on the
next interval, which is quite aggressive when the interval is 125us.
There's report that some platforms may need more time to process the
transfer, otherwise the controller may miss the first interval. Let's
keep it simple and give the controller at least 500us to schedule the
isoc transfer.

Link: https://lore.kernel.org/linux-usb/20220302143539.GI11577@pengutronix.de/
Tested-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/deb8146b8e1f7f8495ef2d5647017270934cb2d8.1646708142.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bug: 229140375
(cherry picked from commit aa6812be1feb75139b9bc263915b3f1ceeb4e154)
Signed-off-by: Dan Vacura <w36195@motorola.com>
Change-Id: I3bbf5abfdb249fb9a10c664f11d4f3b682ceafd1