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

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  [PATCH 4.7 035/143] usb: dwc3: gadget: always cleanup all TRBs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-09-05 19:40 +0200

#1476855 — [PATCH 4.7 035/143] usb: dwc3: gadget: always cleanup all TRBs

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

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

From: Felipe Balbi <felipe.balbi@linux.intel.com>

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>

---
 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 |

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