linux-kernel - RE: [PATCH 22/36] serial: fix pch

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Message-ID: <8899E5C010CA4DECA82313385205780B@hacdom.okisemi.com>
Date:	Fri, 7 Jan 2011 09:21:43 +0900
From:	"Tomoya MORINAGA" <tomoya-linux@....okisemi.com>
To:	"'Greg Kroah-Hartman'" <gregkh@...e.de>,
	<linux-kernel@...r.kernel.org>
Cc:	"'Randy Dunlap'" <randy.dunlap@...cle.com>
Subject: RE: [PATCH 22/36] serial: fix pch_uart kconfig & build

Hi Greg,

On Friday, January 07, 2011 7:23 AM, Greg Kroah-Hartman wrote:
> Also, the help text says that the 
> driver enables & uses PCH_DMA, which is not enabled, so select that. 

I think PCH_DMA is not always used when a user uses PCH_UART.
Since overhead of DMA is not small, in case of low frequent communication,
without DMA is better.
Thus, I think "select PCH_DMA" is unnecessary

(Of course, the PCH_UART works both with/without PCH_DMA.)

-----------------------------------------
Tomoya MORINAGA
OKI SEMICONDUCTOR CO., LTD.

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