When using USB serial console, there is an infinite loop on shutdown.
The console fills with the error message:
ttyUSB0 - error submitting urb: -22
It seems that writing the error message is causing the error, which
cause the message, which causes the error, ...
The following is needed to avoid the infinite loop.
Signed-off-by: Stephen Hemminger <shemminger@xxxxxxxxxx>
--- a/drivers/usb/serial/generic.c 2012-01-10 10:56:58.667176726 -0800
+++ b/drivers/usb/serial/generic.c 2012-01-16 09:37:26.754919670 -0800
@@ -217,8 +217,6 @@ retry:
clear_bit(i, &port->write_urbs_free);
result = usb_submit_urb(urb, GFP_ATOMIC);
if (result) {
- dev_err(&port->dev, "%s - error submitting urb: %d\n",
- __func__, result);
set_bit(i, &port->write_urbs_free);
spin_lock_irqsave(&port->lock, flags);
port->tx_bytes -= count;
--
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