usb: dwc3: gadget: use udc-core's reset notifier

Replace usb_gadget_driver's disconnect with udc-core's reset notifier at
bus reset handler.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 12 insertions, 5 deletions

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 398c12f5efe3..f03b136ecfce 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2041,6 +2041,17 @@ static void dwc3_resume_gadget(struct dwc3 *dwc)
         if (dwc->gadget_driver && dwc->gadget_driver->resume) {
                 spin_unlock(&dwc->lock);
                 dwc->gadget_driver->resume(&dwc->gadget);
+        }
+}
+
+static void dwc3_reset_gadget(struct dwc3 *dwc)
+{
+        if (!dwc->gadget_driver)
+                return;
+
+        if (dwc->gadget.speed != USB_SPEED_UNKNOWN) {
+                spin_unlock(&dwc->lock);
+                usb_gadget_udc_reset(&dwc->gadget, dwc->gadget_driver);
                 spin_lock(&dwc->lock);
         }
 }
@@ -2185,11 +2196,7 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
                         dwc3_gadget_disconnect_interrupt(dwc);
         }
 
-        /* after reset -> Default State */
-        usb_gadget_set_state(&dwc->gadget, USB_STATE_DEFAULT);
-
-        if (dwc->gadget.speed != USB_SPEED_UNKNOWN)
-                dwc3_disconnect_gadget(dwc);
+        dwc3_reset_gadget(dwc);
 
         reg = dwc3_readl(dwc->regs, DWC3_DCTL);
         reg &= ~DWC3_DCTL_TSTCTRL_MASK;