From: Felipe Balbi Date: Wed, 6 Apr 2016 07:01:14 +0000 (+0300) Subject: UPSTREAM: usb: dwc3: gadget: don't interrupt when chained X-Git-Tag: firefly_0821_release~1855 X-Git-Url: http://plrg.eecs.uci.edu/git/?p=firefly-linux-kernel-4.4.55.git;a=commitdiff_plain;h=530a489e6beb883b579c3798d0f633a35b0bcbf0 UPSTREAM: 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. Change-Id: Ic90f7482b1f4367532199155c51fb790c3566cdc Signed-off-by: Felipe Balbi Signed-off-by: Wu Liang feng (cherry picked from commit 8e7046b71daeb6dfbf8c6eaa164e55d4e1dcb5c8) --- diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 92f3e76bfbca..d7668e7bc61a 100644 --- 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)