usb: dwc3: gadget: Delay issuing End Transfer

usb: dwc3: gadget: Delay issuing End Transfer

[ Upstream commit f66eef8fb8989a7193cafc3870f7c7b2b97f16cb ]

If the controller hasn't DMA'ed the Setup data from its fifo, it won't
process the End Transfer command. Polling for the command completion may
block the driver from servicing the Setup phase and cause a timeout.
Previously we only check and delay issuing End Transfer in the case of
endpoint dequeue. Let's do that for all End Transfer scenarios.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/2fcf3b5d90068d549589a57a27a79f76c6769b04.1650593829.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 730e12fbec53 ("usb: dwc3: gadget: Handle EP0 request dequeuing properly")
Signed-off-by: Sasha Levin <sashal@kernel.org>