Xhci_submit_control() submits TRB_DATA with TRB_IOC flag regardless of the vlaue of req->requesttype, so we shouldn't gate waiting for the event that will result from it with "req->requesttype & USB_DIR_IN". Failing to do this will result in unstable USB performance and will eventually cause the controller to fail completely. Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx> --- drivers/usb/host/xhci-hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c index 657a49f8a..8a00b8854 100644 --- a/drivers/usb/host/xhci-hcd.c +++ b/drivers/usb/host/xhci-hcd.c @@ -1248,7 +1248,7 @@ static int xhci_submit_control(struct usb_device *udev, unsigned long pipe, xhci_print_trb(xhci, &trb, "Request Status"); xhci_virtdev_issue_transfer(vdev, 0, &trb, true); - if (length > 0 && req->requesttype & USB_DIR_IN) { + if (length > 0) { ret = xhci_wait_for_event(xhci, TRB_TRANSFER, &trb); xhci_print_trb(xhci, &trb, "Response Data "); if (ret == -COMP_SHORT_TX) -- 2.20.1 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox