usb: dwc3: gadget: synchronize_irq dwc irq in suspend

We see dwc3 endpoint stopped by unwanted irq during suspend resume test, which is caused dwc3 ep can't be started with error "No Resource". Here, add synchronize_irq before suspend to sync the pending IRQ handlers complete. Signed-off-by: Bo He <[email protected]> Signed-off-by: Yu Wang <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
frno7 · Jan 14, 2019 · 01c1088 · 01c1088
1 parent 1c7fc5c
commit 01c1088
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
@@ -3379,6 +3379,8 @@ int dwc3_gadget_suspend(struct dwc3 *dwc)
 	dwc3_disconnect_gadget(dwc);
 	__dwc3_gadget_stop(dwc);
 
+	synchronize_irq(dwc->irq_gadget);
+
 	return 0;
 }