linux-kernel - Re: [PATCH] synclink_gt add receive pio mode

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Message-ID: <20090417143236.015a2d5b@lxorguk.ukuu.org.uk>
Date:	Fri, 17 Apr 2009 14:32:36 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Paul Fulghum <paulkf@...rogate.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] synclink_gt add receive pio mode

On Thu, 16 Apr 2009 10:53:24 -0500
Paul Fulghum <paulkf@...rogate.com> wrote:

> Add receive programmed IO mode to reduce receive latency
> when using low data rates. The receive FIFO trigger
> level of 128 bytes used in DMA mode creates excessive latency
> when operating at low data rates. PIO mode is selected when user
> application requests data in blocks of less than 128 bytes.
> 

Looks good but needs a Signed-off-by 

Alan
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