linux-kernel - Re: IrDA driver fails on PXA255

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Message-ID: <20110529072516.GW24876@n2100.arm.linux.org.uk>
Date:	Sun, 29 May 2011 08:25:16 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Eric Miao <eric.y.miao@...il.com>,
	Samuel Ortiz <samuel@...tiz.org>
Subject: Re: IrDA driver fails on PXA255

On Sat, May 28, 2011 at 07:22:44PM -0700, David Rientjes wrote:
> arm, pxa2xx: enable DMA support for pxa2xx IRDA interface
> 
> The pxa2xx-ir driver allocates with GFP_DMA, so it must always have 
> ZONE_DMA.

Wrong way.  If there's no restrictions, drivers shouldn't be using
GFP_DMA.  For the majority of SoCs, that's the case.
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