From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Brownell <david-b@pacbell.net>
Subject: Re: [PATCH v5] serial: spi: add spi-uart driver for Maxim 3110
Date: Tue, 2 Mar 2010 20:51:58 -0800
Message-ID: <201003022051.58688.david-b@pacbell.net>
References: <20091229222006.1ddb28a4@feng-desktop> <20100208165946.0e4dde83@feng-i7> <20100303105744.1eec10d7@feng-i7>
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To: Feng Tang <feng.tang@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Greg KH <greg@kroah.com>, spi-devel-list <spi-devel-general@lists.sourceforge.net>, "linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>, Grant Likely <grant.likely@secretlab.ca>, "alan@lxorguk.ukuu.org.uk" <alan@lxorguk.ukuu.org.uk>

On Tuesday 02 March 2010, Feng Tang wrote:
> + * 3. This driver doesn't support work with a spi cotnroller in DMA mode, 

As Grant said:  That's a bug ... one that will randomly
kick in based on whether the underlying SPI controller driver
happens to use DMA for a given transaction.