Re: [PATCH 1/5] pdev: Fix platform device resource linking

From: Russell King - ARM Linux
Date: Tue Aug 06 2013 - 06:19:43 EST

On Tue, Aug 06, 2013 at 06:15:27PM +0800, Greg Kroah-Hartman wrote:
> On Tue, Aug 06, 2013 at 12:45:42PM +0300, Pantelis Antoniou wrote:
> > What would it take to move all this into driver core?
> What specifically would you move into there?

A variable to hold the streaming dma_mask, so that its in struct device
rather than having to be separate. Yes, we can keep the pointer in there
too, because that appears to convey meaning in the kernel today - whether
the device can do DMA or not.

A NULL dma_mask pointer already means it can't and dma_set_mask() always
fails. A non-NULL dma_mask pointer means the driver can use
dma_set_mask() to set an appropriate mask.
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