linux-kernel - Re: [PATCH 3/3] serial: 8250: Add a wakeup

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Message-ID: <20120117201036.6d99f98f@pyramind.ukuu.org.uk>
Date:	Tue, 17 Jan 2012 20:10:36 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Simon Glass <sjg@...omium.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	linux-serial@...r.kernel.org
Subject: Re: [PATCH 3/3] serial: 8250: Add a wakeup_capable module param

On Tue, 17 Jan 2012 10:56:03 -0800
Simon Glass <sjg@...omium.org> wrote:

> Since serial_core now does not make serial ports wake-up capable by
> default, add a parameter to support this feature in the 8250 UART.
> This is the only UART where I think this feature is useful.

NAK

Things should just work for users. Magic parameters is not an
improvement. If its a performance problem someone needs to fix the rcu
sync overhead or stop using rcu on that path.

Alan
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