Follow-up Comment #3, bug #31173 (project grub): It's ok for 200 ms waiting. As for restting to zero, it's quite difficult to predict how exactly the UART is broken. If it's able to transmit more than 50% of characters, broken count will come back to zero. If it's not then it's probably broken. Could you test my patch with 200 instead of 100 ms?
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