Each setup stage will prepare status stage at cdns3_ep0_setup_phase, it doesn't need to add extra status stage for test mode handling, otherwise, the controller can't enter the test mode. Through the Lecroy bus analyzer log, the controller will always wait status stage even it is prepared by software later than the test mode is set by software. If we comment out the status stage at cdns3_ep0_setup_phase, the controller will not enter test mode even the test mode is set beforehand. Signed-off-by: Peter Chen <peter.chen@xxxxxxx> --- drivers/usb/cdns3/ep0.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/usb/cdns3/ep0.c b/drivers/usb/cdns3/ep0.c index e71240b386b4..82645a2a0f52 100644 --- a/drivers/usb/cdns3/ep0.c +++ b/drivers/usb/cdns3/ep0.c @@ -332,13 +332,6 @@ static int cdns3_ep0_feature_handle_device(struct cdns3_device *priv_dev, case TEST_K: case TEST_SE0_NAK: case TEST_PACKET: - cdns3_ep0_complete_setup(priv_dev, 0, 1); - /** - * Little delay to give the controller some time - * for sending status stage. - * This time should be less then 3ms. - */ - mdelay(1); cdns3_set_register_bit(&priv_dev->regs->usb_cmd, USB_CMD_STMODE | USB_STS_TMODE_SEL(tmode - 1)); -- 2.17.1
