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UPSTREAM: usb: dwc3: gadget: return 0 if we try to Wakeup in superspeed

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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.

Change-Id: Iff35ee46a782684db1c2339ad71a73a303cb3a89
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Wu Liang feng <wulf@rock-chips.com>
(cherry picked from commit 6b74289937)
This commit is contained in:
Felipe Balbi
2016-05-13 10:19:42 +03:00
committed by Huang, Tao
parent dd3e05e035
commit 7d57ec8050
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/dwc3/gadget.c
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@@ -1441,7 +1441,7 @@ static int __dwc3_gadget_wakeup(struct dwc3 *dwc)
speed = reg & DWC3_DSTS_CONNECTSPD;
if (speed == DWC3_DSTS_SUPERSPEED) {
dwc3_trace(trace_dwc3_gadget, "no wakeup on SuperSpeed\n");
return -EINVAL;
return 0;
}
link_state = DWC3_DSTS_USBLNKST(reg);