[PATCH v5 5/8] usb: dwc3: don't issue no-op trb for stream capable endpoints

Anurag Kumar Vulisha
2018-09-15T14:31:47Z

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>
Reviewed-by: Thinh Nguyen <thinhn@synopsys.com>
---
changes in v5:
1. None

Changes in v4:
1. None

Changes in v3:
1. None

Changes in v2:
1. None
---
drivers/usb/dwc3/gadget.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index e18f9b9..b2d68f1 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -677,7 +677,7 @@ 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;
--
2.1.1