diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 4959c26d3b71..2fed2aa01407 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -775,15 +775,30 @@ static int dwc3_gadget_resize_tx_fifos(struct dwc3_ep *dep) ram1_depth = DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7); - if ((dep->endpoint.maxburst > 1 && - usb_endpoint_xfer_bulk(dep->endpoint.desc)) || - usb_endpoint_xfer_isoc(dep->endpoint.desc)) - num_fifos = 3; - - if (dep->endpoint.maxburst > 6 && - (usb_endpoint_xfer_bulk(dep->endpoint.desc) || - usb_endpoint_xfer_isoc(dep->endpoint.desc)) && DWC3_IP_IS(DWC31)) - num_fifos = dwc->tx_fifo_resize_max_num; + switch (dwc->gadget->speed) { + case USB_SPEED_SUPER_PLUS: + case USB_SPEED_SUPER: + if (usb_endpoint_xfer_bulk(dep->endpoint.desc) || + usb_endpoint_xfer_isoc(dep->endpoint.desc)) + num_fifos = min_t(unsigned int, + dep->endpoint.maxburst, + dwc->tx_fifo_resize_max_num); + break; + case USB_SPEED_HIGH: + if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { + num_fifos = min_t(unsigned int, + usb_endpoint_maxp_mult(dep->endpoint.desc) + 1, + dwc->tx_fifo_resize_max_num); + break; + } + fallthrough; + case USB_SPEED_FULL: + if (usb_endpoint_xfer_bulk(dep->endpoint.desc)) + num_fifos = 2; + break; + default: + break; + } /* FIFO size for a single buffer */ fifo = dwc3_gadget_calc_tx_fifo_size(dwc, 1);