Patch "usb: dwc3: ep0: Reset TRB counter for ep0 IN" has been added to the 4.15-stable tree

This is a note to let you know that I've just added the patch titled

usb: dwc3: ep0: Reset TRB counter for ep0 IN

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:

     usb-dwc3-ep0-reset-trb-counter-for-ep0-in.patch

and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Thinh Nguyen <[email protected]>
Date: Fri, 12 Jan 2018 18:18:27 -0800
Subject: usb: dwc3: ep0: Reset TRB counter for ep0 IN

From: Thinh Nguyen <[email protected]>

commit f035d139ffece7b6a7b8bfb17bd0ba715ee57a04 upstream.

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.

---
 drivers/usb/dwc3/ep0.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

@@ -858,7 +858,12 @@ static void dwc3_ep0_complete_data(struc
 		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;
 	}
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/usb-dwc3-ep0-reset-trb-counter-for-ep0-in.patch queue-4.15/usb-dwc3-gadget-set-maxpacket-size-for-ep0-in.patch