From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Paul Fulghum <paulkf@microgate.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] synclink_gt add receive pio mode
Date: Fri, 17 Apr 2009 14:32:36 +0100 [thread overview]
Message-ID: <20090417143236.015a2d5b@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <1239897204.13866.7.camel@x2.microgate.com>
On Thu, 16 Apr 2009 10:53:24 -0500
Paul Fulghum <paulkf@microgate.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
prev parent reply other threads:[~2009-04-17 13:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-16 15:53 Paul Fulghum
2009-04-17 13:32 ` Alan Cox [this message]
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