Re: usb serial: pl2303 driver TxD "break" stays after close() bug

From: Johan Hovold
Date: Thu Feb 19 2015 - 00:49:03 EST

On Thu, Feb 05, 2015 at 12:56:20PM +0200, Jari Ruusu wrote:
> Tested on 3.10.67 and 3.18.5 kernels with ATEN UC-232A usb-serial adapter.
> No patch, sorry. To actually see the stuck "break" signal on TxD line, you
> need either some sort of LED or voltmeter connected to the data transmit
> line. Other RS-232 serial ports that I have access to (normal PC hardware
> serial ports and FTDI usb-serial adapters) do not have this bug.

Thanks for the report. I believe you may be right here, but I'm not able
to verify this until earliest next week.

What happens when you reopen the port? Is the break state cleared then?

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