From 6b74289937f624439c87135cfabb3deb2955fb53 Mon Sep 17 00:00:00 2001
From: Felipe Balbi <felipe.balbi@linux.intel.com>
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 <felipe.balbi@linux.intel.com>
---
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);
--
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