An USB 1.1 keybaord connected to dwc2 does not report status until it changes. With this patch you can enable keyboard by pressing a key while USB devices are probed. Without a keypress no state is reported an the probe times out. We don't want to wait for a keypress or timeout while polling for keypresses so implement the nonblock variant that exits early.
Signed-off-by: Michal Suchanek msuchanek@suse.de --- drivers/usb/host/dwc2.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c index 3a44f5b14509..78829d56199c 100644 --- a/drivers/usb/host/dwc2.c +++ b/drivers/usb/host/dwc2.c @@ -1123,7 +1123,7 @@ int _submit_int_msg(struct dwc2_priv *priv, struct usb_device *dev, return -ETIMEDOUT; } ret = _submit_bulk_msg(priv, dev, pipe, buffer, len); - if (ret != -EAGAIN) + if ((ret != -EAGAIN) || nonblock) return ret; } } @@ -1294,13 +1294,13 @@ static int dwc2_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
static int dwc2_submit_int_msg(struct udevice *dev, struct usb_device *udev, unsigned long pipe, void *buffer, int length, - int interval) + int interval, bool nonblock) { struct dwc2_priv *priv = dev_get_priv(dev);
debug("%s: dev='%s', udev=%p\n", __func__, dev->name, udev);
- return _submit_int_msg(priv, udev, pipe, buffer, length, interval); + return _submit_int_msg(priv, udev, pipe, buffer, length, interval, nonblock); }
static int dwc2_usb_ofdata_to_platdata(struct udevice *dev)