When connection is established non-ss mode, a maxburst is set to 0. Therefore, the value of burst size has wrong value. We must use the burst size only in superspeed mode.
Signed-off-by: Chanho Park <[email protected]> Signed-off-by: Kyungmin Park <[email protected]> --- drivers/usb/dwc3/gadget.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 58fdfad..6516560 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -438,8 +438,14 @@ static int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep, memset(¶ms, 0x00, sizeof(params)); params.param0 = DWC3_DEPCFG_EP_TYPE(usb_endpoint_type(desc)) - | DWC3_DEPCFG_MAX_PACKET_SIZE(usb_endpoint_maxp(desc)) - | DWC3_DEPCFG_BURST_SIZE(dep->endpoint.maxburst - 1); + | DWC3_DEPCFG_MAX_PACKET_SIZE(usb_endpoint_maxp(desc)); + + /* Burst size is only needed in SuperSpeed mode */ + if (dwc->gadget.speed == USB_SPEED_SUPER) { + u32 burst = dep->endpoint.maxburst - 1; + + params.param0 |= DWC3_DEPCFG_BURST_SIZE(burst); + } params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN | DWC3_DEPCFG_XFER_NOT_READY_EN; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
