From 6856d30c6c0038dc0648009853533af3af6c5ba8 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 30 Sep 2014 11:43:20 -0500 Subject: [PATCH] usb: dwc3: ep0: return early on NULL requests if our list of requests is empty, return early. There's really nothing to be done in case our request list is empty anyway because the only situation where we our list is empty, is when we're transferring ZLPs. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/ep0.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index ae6b5753fe67..a47cc1e97fae 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -789,9 +789,6 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS; - r = next_request(&ep0->request_list); - ur = &r->request; - trb = dwc->ep0_trb; status = DWC3_TRB_SIZE_TRBSTS(trb->size); @@ -804,6 +801,12 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, return; } + r = next_request(&ep0->request_list); + if (!r) + return; + + ur = &r->request; + length = trb->size & DWC3_TRB_SIZE_MASK; if (dwc->ep0_bounced) { -- 2.39.2