diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 858f09229239..c21f973615e9 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1616,6 +1616,14 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) return __dwc3_gadget_kick_transfer(dep); } +static bool dwc3_gadget_is_suspended(struct dwc3 *dwc) +{ + if (atomic_read(&dwc->in_lpm) || + dwc->link_state == DWC3_LINK_STATE_U3) + return true; + return false; +} + static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, gfp_t gfp_flags) { @@ -1627,6 +1635,9 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, int ret; + if (dwc3_gadget_is_suspended(dwc)) + return -EAGAIN; + spin_lock_irqsave(&dwc->lock, flags); ret = __dwc3_gadget_ep_queue(dep, req); spin_unlock_irqrestore(&dwc->lock, flags);