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| author | Felipe Balbi <balbi@ti.com> | 2014-09-30 11:43:20 -0500 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-10-20 15:58:49 -0500 |
| commit | 6856d30c6c0038dc0648009853533af3af6c5ba8 (patch) | |
| tree | 068e853063293838a811e7fcb78a0d6e91eb9b2d /drivers/usb/dwc3/ep0.c | |
| parent | 7d643664ea559b36188cae264047ce3c9bfec3a2 (diff) | |
| download | linux-stable-6856d30c6c0038dc0648009853533af3af6c5ba8.tar.gz linux-stable-6856d30c6c0038dc0648009853533af3af6c5ba8.tar.bz2 linux-stable-6856d30c6c0038dc0648009853533af3af6c5ba8.zip | |
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 <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3/ep0.c')
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 9 |
1 files 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) { |