From 6b74289937f624439c87135cfabb3deb2955fb53 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 13 May 2016 10:19:42 +0300 Subject: [PATCH] usb: dwc3: gadget: return 0 if we try to Wakeup in superspeed Instead of returning -EINVAL when someone calls __dwc3_gadget_wakeup() in speeds > highspeed, let's return 0. There are no problems for the driver for calling it in superspeed as we cleanly just return. This avoids an annoying WARN_ONCE() always triggering during superspeed enumeration with LPM enabled. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 79d1882f1908..4c9fe7b55100 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1431,7 +1431,7 @@ static int __dwc3_gadget_wakeup(struct dwc3 *dwc) if ((speed == DWC3_DSTS_SUPERSPEED) || (speed == DWC3_DSTS_SUPERSPEED_PLUS)) { dwc3_trace(trace_dwc3_gadget, "no wakeup on SuperSpeed\n"); - return -EINVAL; + return 0; } link_state = DWC3_DSTS_USBLNKST(reg); -- 2.20.1