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usb: dwc3: don't issue no-op trb for stream capable endpoints

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The stream capable endpoints require stream id to be given
when issuing START TRANSFER. While issuing no-op trb the
stream id is not yet known, so don't issue no-op trb's on
stream capable endpoints.

Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Anurag Kumar Vulisha 2018-12-01 16:43:27 +05:30 committed by Felipe Balbi
parent a7351807bd
commit 26d62b4d10
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/dwc3/gadget.c
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@ -670,7 +670,7 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, unsigned int action)
* Issue StartTransfer here with no-op TRB so we can always rely on No
* Response Update Transfer command.
*/
if (usb_endpoint_xfer_bulk(desc) ||
if ((usb_endpoint_xfer_bulk(desc) && !dep->stream_capable) ||
usb_endpoint_xfer_int(desc)) {
struct dwc3_gadget_ep_cmd_params params;
struct dwc3_trb *trb;