Commit edf356f2 authored Apr 16, 2021 by Artur Petrosyan Committed by Greg Kroah-Hartman May 22, 2021

usb: dwc2: Fix host mode hibernation exit with remote wakeup flow.



[ Upstream commit c2db8d7b9568b10e014af83b3c15e39929e3579e ]

Added setting "port_connect_status_change" flag to "1" in order
to re-enumerate, because after exit from hibernation port
connection status is not detected.

Fixes: c5c403dc ("usb: dwc2: Add host/device hibernation functions")
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124707.5EEC2A005D@mailhost.synopsys.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent feb4750e

drivers/usb/dwc2/hcd.c

+9 −1

Original line number	Diff line number	Diff line
		@@ -5741,7 +5741,15 @@ int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup,
		return ret;
		}

		if (rem_wakeup) {
		dwc2_hcd_rem_wakeup(hsotg);
		/*
		* Change "port_connect_status_change" flag to re-enumerate,
		* because after exit from hibernation port connection status
		* is not detected.
		*/
		hsotg->flags.b.port_connect_status_change = 1;
		}

		hsotg->hibernated = 0;
		hsotg->bus_suspended = 0;