[PATCH] usb: dwc2: gadget: On USB RESET reset device address to zero

[Minas Harutyunyan]

Reseted DEVADDR field in DCFG to zero on USB RESET.

Device address in DCFG register does not reset to zero,
which required to pass enumeration, after disconnect and
reconnect.

Signed-off-by: Minas Harutyunyan <hminas@xxxxxxxxxxxx>
---
 drivers/usb/dwc2/gadget.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 98a4a79e7f6e..c5c0a26a4d66 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3561,6 +3561,9 @@ static irqreturn_t dwc2_hsotg_irq(int irq, void *pw)
 		/* Report disconnection if it is not already done. */
 		dwc2_hsotg_disconnect(hsotg);
 
+		/* Reset device address to zero */
+		__bic32(hsotg->regs + DCFG, DCFG_DEVADDR_MASK);
+
 		if (usb_status & GOTGCTL_BSESVLD && connected)
 			dwc2_hsotg_core_init_disconnected(hsotg, true);
 	}
-- 
2.11.0