netdev - Re: [Linaro-acpi] [V2 PATCH 2/5] arm64 : Introduce support for ACPI

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Date:	Tue, 05 May 2015 18:12:06 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linaro-acpi@...ts.linaro.org
Cc:	Suravee Suthikulanit <suravee.suthikulpanit@....com>,
	linux-arm-kernel@...ts.infradead.org, herbert@...dor.apana.org.au,
	catalin.marinas@....com, rjw@...ysocki.net,
	linux-kernel@...r.kernel.org, will.deacon@....com,
	linux-crypto@...r.kernel.org, linux-acpi@...r.kernel.org,
	netdev@...r.kernel.org, davem@...emloft.net, lenb@...nel.org
Subject: Re: [Linaro-acpi] [V2 PATCH 2/5] arm64 : Introduce support for ACPI _CCA object

On Tuesday 05 May 2015 11:09:38 Suravee Suthikulanit wrote:
> 
> However, codes in several places are making use of dma_map_ops without 
> checking if the ops are NULL (i.e. 
> include/asm-generic/dma-mapping-common.h and in arch-specific 
> implementation). If setting it to NULL is what we are planning to 
> support, we would need to scrub the current code to put NULL check. 
> Also, would you consider if that is safe to do going forward?
> 
> 

I mean the dma_mask pointer, not dma_map_ops.

	Arnd
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