[added to the 3.18 stable tree] usb: dwc3: gadget: always cleanup all TRBs

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From: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>

This patch has been added to the 3.18 stable tree. If you have any
objections, please let us know.

===============

[ Upstream commit 7c705dfe2ebe731c8fd068623b6b4df2d3512c08 ]

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

Cc: <stable@xxxxxxxxxxxxxxx>
Cc: Brian E Rogers <brian.e.rogers@xxxxxxxxx>
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
---
 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 ec6440f..2d49d66 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1873,7 +1873,7 @@ 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 |
-- 
2.7.4
--
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