linux-kernel - Re: [PATCH v2 1/3] dmaengine: Add support for APM X-Gene SoC DMA engine driver

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Date:	Mon, 12 Jan 2015 19:55:02 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Rameshwar Sahu <rsahu@....com>
Cc:	vinod.koul@...el.com, dan.j.williams@...el.com,
	dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	ddutile@...hat.com, jcm@...hat.com, patches@....com,
	Loc Ho <lho@....com>
Subject: Re: [PATCH v2 1/3] dmaengine: Add support for APM X-Gene SoC DMA engine driver

On Monday 12 January 2015 14:40:09 Rameshwar Sahu wrote:
> > +
> > +       dma_set_mask_and_coherent(&pdev->dev,
> > +                                 (sizeof(dma_addr_t) == sizeof(u64)) ?
> > +                                 DMA_BIT_MASK(64) : DMA_BIT_MASK(32));
> > +
> 

I commented on this on v1 already: always set the device specific mask here,
it's independent of the CPU architecture, but do check the return value.

Also add the correct dma-ranges property in the parent, or else this will
fail in the future once we add proper checks to dma_set_mask.

	Arnd
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