[v2,1/2] dma-mapping: move dma configuration to bus infrastructure

[Nipun Gupta <nipun.gupta@nxp.com>]

> -----Original Message-----
> From: Christoph Hellwig [mailto:hch@lst.de]
> Sent: Thursday, March 22, 2018 13:46
> To: Nipun Gupta <nipun.gupta@nxp.com>
> 
> > +static int amba_dma_configure(struct device *dev)
> > +{
> > +	return dma_common_configure(dev);
> > +}
> 
> So it turns out we only end with two callers of dma_common_configure
> after this series.  Based ont hat I'm tempted with the suggestion
> from Robin to just have amba call platform_dma_configure, and move
> the code from dma_common_configure to platform_dma_configure.

okay, that would be fine, trivial query - will it be okay to include
'linux/platform_device.h' in the AMBA bus? I am reluctant for this change
because of including platform file.

Thanks,
Nipun
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