Re: [PATCH v5 5/8] char: rpmb: add RPMB simulation device

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On Thu, Sep 01, 2016 at 08:25:28PM +0000, Winkler, Tomas wrote:
> > On Mon, Jul 18, 2016 at 11:27:50PM +0300, Tomas Winkler wrote:
> > > This is a simple platform device used for testing the RPMB subsystem.
> > > +static struct platform_device *rpmb_sim_pdev;
> > 
> > A platform device?  Ick, no please don't abuse that interface for this type of
> > thing.  Make it a real device if you have one, and put it in the proper place.  If
> > it's a "virtual" device, great, use that.  But don't make something up like this
> > please.
> 
> This is a virtual device (simulation), nothing behind it just a chunk of memory.
> Is this there any information missing to make it clearer? 

Don't make it a platform device, make it a "virtual" device, don't abuse
the platform device/driver interface for something that isn't really a
platform device.

thanks,

greg k-h
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