[PATCH 4.7 035/143] usb: dwc3: gadget: always cleanup all TRBs

From: Greg Kroah-Hartman
Date: Mon Sep 05 2016 - 13:37:26 EST


4.7-stable review patch. If anyone has any objections, please let me know.

------------------

From: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>

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@xxxxxxxxx>
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/usb/dwc3/gadget.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1969,7 +1969,7 @@ static int __dwc3_cleanup_done_trbs(stru
s_pkt = 1;
}

- if (s_pkt)
+ if (s_pkt && !chain)
return 1;
if ((event->status & DEPEVT_STATUS_LST) &&
(trb->ctrl & (DWC3_TRB_CTRL_LST |