linux-kernel - Re: "irq 42: nobody cared" and I/O errors on serial ports

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Date:	Thu, 25 Feb 2010 13:08:56 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	vb@...e.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: "irq 42: nobody cared" and I/O errors on serial ports

> what would be a proper fix here - should
> serial_core.c:uart_unthrottle() be modified not to attempt sending a
> character on the disabled tty?

n_tty should not be calling the in the buffer flush handling when it is
closed. Known bug. It needs to reset the flags but shouldn't be
restarting I/O from that path.



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