From: Thinh Nguyen Date: Sat, 13 Jan 2018 02:18:27 +0000 (-0800) Subject: usb: dwc3: ep0: Reset TRB counter for ep0 IN X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=f035d139ffece7b6a7b8bfb17bd0ba715ee57a04;p=openwrt%2Fstaging%2Fblogic.git usb: dwc3: ep0: Reset TRB counter for ep0 IN DWC3 tracks TRB counter for each ep0 direction separately. In control read transfer completion handler, the driver needs to reset the TRB enqueue counter for ep0 IN direction. Currently the driver only resets the TRB counter for control OUT endpoint. Check for the data direction and properly reset the TRB counter from correct control endpoint. Cc: stable@vger.kernel.org Fixes: c2da2ff00606 ("usb: dwc3: ep0: don't use ep0in for transfers") Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 9c2e4a17918e..18be31d5743a 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -854,7 +854,12 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, trb++; trb->ctrl &= ~DWC3_TRB_CTRL_HWO; trace_dwc3_complete_trb(ep0, trb); - ep0->trb_enqueue = 0; + + if (r->direction) + dwc->eps[1]->trb_enqueue = 0; + else + dwc->eps[0]->trb_enqueue = 0; + dwc->ep0_bounced = false; }