usb: dwc3: gadget: don't interrupt when chained

It makes no sense to interrupt in the middle of
chained transfer. This patch just makes sure we
don't do that.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index c068a8f..88fd30b 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -804,7 +804,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
        /* always enable Continue on Short Packet */
        trb->ctrl |= DWC3_TRB_CTRL_CSP;
 
-       if (!req->request.no_interrupt)
+       if (!req->request.no_interrupt && !chain)
                trb->ctrl |= DWC3_TRB_CTRL_IOC | DWC3_TRB_CTRL_ISP_IMI;
 
        if (last)