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usb: dwc3: ep0: return early on NULL requests

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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 <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2014-09-30 11:43:20 -05:00
parent 7d643664ea
commit 6856d30c6c
1 changed files with 6 additions and 3 deletions
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9
drivers/usb/dwc3/ep0.c
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@ -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) {