Re: [Xen-devel] [PATCH v9 05/13] arm: introduce is_device_dma_coherent

[Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx>]

On Thu, Nov 20, 2014 at 10:39:32AM +0000, Stefano Stabellini wrote:
> On Thu, 20 Nov 2014, Russell King - ARM Linux wrote:
> > On Tue, Nov 18, 2014 at 04:49:21PM +0000, Stefano Stabellini wrote:
> > > ping?
> > 
> > Sending something which wants my attention _To:_ me is always a good idea :)
> 
> I'll keep that in mind :-)
> 
> 
> > The patch is fine in itself, but I have a niggle about the
> > is_device_dma_coherent() - provided this is only used in architecture
> > specific code, that should be fine.  It could probably do with a comment
> > to that effect in an attempt to discourage drivers using it (thereby
> > becoming less portable to other architectures.)
> 
> Can I take this as an Acked-by?
> Good point regarding the comment. Maybe I can add:
> 
> /* do not use this function in a driver */

Provided it gets such a comment, yes.  Thanks.

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