| Message ID | 1616146285-19149-2-git-send-email-wcheng@codeaurora.org |
|---|---|
| State | New |
| Headers | show |
| Series | Fix allowing of ep queuing while stopping transfers | expand |
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 4a337f3..6e14fdc 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2912,6 +2912,11 @@ static void dwc3_gadget_ep_cleanup_completed_requests(struct dwc3_ep *dep, static bool dwc3_gadget_ep_should_continue(struct dwc3_ep *dep) { struct dwc3_request *req; + struct dwc3 *dwc = dep->dwc; + + if (!dep->endpoint.desc || !dwc->pullups_connected || + !dwc->connected) + return false; if (!list_empty(&dep->pending_list)) return true;
Add checks similar to dwc3_gadget_ep_queue() before kicking off transfers after getting an endpoint completion event. Since cleaning up completed requests will momentarily unlock dwc->lock, there is a chance for a sequence like pullup disable to be executed. This can lead to preparing a TRB, which will be removed by the pullup disable routine. Signed-off-by: Wesley Cheng <wcheng@codeaurora.org> --- drivers/usb/dwc3/gadget.c | 5 +++++ 1 file changed, 5 insertions(+)