linux-kernel - Re: [PATCH] spi/pxa2xx: initialize DMA channels to -1 to prevent inadvertent match

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Date:	Mon, 13 Jan 2014 12:39:57 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:	linux-spi@...r.kernel.org, Eric Miao <eric.y.miao@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi/pxa2xx: initialize DMA channels to -1 to prevent
 inadvertent match

On Mon, Jan 13, 2014 at 11:17:04AM +0200, Mika Westerberg wrote:
> Commit cddb339badb0 (spi/pxa2xx: convert to dma_request_slave_channel_compat())
> converted the driver to use ACPI provided DMA helpers but it forgot to
> initialize the platform data for the channels to -1. Failing to do so will
> result inadvertent match in the filter function because 0 is a valid
> channel number.

Applied, thanks.

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