linux-kernel - Re: [patch 1/4] pnp: only assign IORESOURCE_DMA if CONFIG_ISA_DMA

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Message-ID: <alpine.DEB.2.00.1102031201430.27201@chino.kir.corp.google.com>
Date:	Thu, 3 Feb 2011 12:01:55 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Adam Belay <abelay@....edu>,
	Bjorn Helgaas <bjorn.helgaas@...com>
cc:	Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Russell King <linux@....linux.org.uk>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 1/4] pnp: only assign IORESOURCE_DMA if CONFIG_ISA_DMA_API
 is enabled

On Wed, 26 Jan 2011, David Rientjes wrote:

> IORESOURCE_DMA cannot be assigned without utilizing the interface
> provided by CONFIG_ISA_DMA_API, specifically request_dma() and
> free_dma().  Thus, there's a strict dependency on the config option and
> limits IORESOURCE_DMA only to architectures that support ISA-style DMA.
> 
> ia64 is not one of those architectures, so pnp_check_dma() no longer
> needs to be special-cased for that architecture.
> 
> pnp_assign_resources() will now return -EINVAL if IORESOURCE_DMA is
> attempted on such a kernel.
> 
> Signed-off-by: David Rientjes <rientjes@...gle.com>

Are there any objections to merging this?
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