From 1b6009ea88ec3657792c6d15e33990abf2b907b0 Mon Sep 17 00:00:00 2001
From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Date: Wed, 23 Oct 2019 19:15:49 -0700
Subject: [PATCH] usb: dwc3: gadget: Set link state to RX_Detect on disconnect

When DWC3 receives disconnect event, it needs to set the link state to
RX_Detect.

DWC_usb3 3.30a programming guide 4.1.7

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/dwc3/gadget.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index f8f4af8c48e8..caf12fd71e73 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2759,6 +2759,8 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
 {
 	int			reg;
 
+	dwc3_gadget_set_link_state(dwc, DWC3_LINK_STATE_RX_DET);
+
 	reg = dwc3_readl(dwc->regs, DWC3_DCTL);
 	reg &= ~DWC3_DCTL_INITU1ENA;
 	reg &= ~DWC3_DCTL_INITU2ENA;