linux-kernel - Re: [RFC][PATCH 7/7] serial, 8250: Mostly avoid wakeups from under port->lock

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Message-ID: <1324485047.10752.20.camel@twins>
Date:	Wed, 21 Dec 2011 17:30:47 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ted Ts'o <tytso@....edu>, Greg KH <greg@...ah.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	akpm@...ux-foundation.org,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH 7/7] serial, 8250: Mostly avoid wakeups from under
 port->lock

On Wed, 2011-12-21 at 17:22 +0100, Peter Zijlstra wrote:

> Could you explain that more, its not actually connecting with any
> neurons..

Note that I don't actually know how uarts work. So telling me to go read
that fine^Weffin' manual/wikipedia page is a good option.

I found me this page:

 http://www.lammertbies.nl/comm/info/serial-uart.html

and I guess I'll read it and pay extra attention to the flow control
part, since I found in serial_core.h that x_char is xon/xoff related.
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