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 <msucha...@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)
--
2.21.0
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