From: Felipe Balbi <felipe.balbi@linux.intel.com>
Date: Wed, 10 Aug 2016 09:35:30 +0000 (+0300)
Subject: usb: dwc3: gadget: always cleanup all TRBs
X-Git-Tag: v4.7.3~109
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1eced36850fa879d7ae31959fd9956797df15b2e;p=thirdparty%2Fkernel%2Fstable.git

usb: dwc3: gadget: always cleanup all TRBs

commit 7c705dfe2ebe731c8fd068623b6b4df2d3512c08 upstream.

If we stop earlier due to short packet, we will
not be able to giveback all TRBs.

Cc: Brian E Rogers <brian.e.rogers@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 5a655b231af90..05a5300aa1ab0 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1969,7 +1969,7 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
 			s_pkt = 1;
 	}
 
-	if (s_pkt)
+	if (s_pkt && !chain)
 		return 1;
 	if ((event->status & DEPEVT_STATUS_LST) &&
 			(trb->ctrl & (DWC3_TRB_CTRL_LST |