[PATCH v1 1/4] drm/tiny/repaper: Make driver OF-independent

[Sam Ravnborg]

Hi Andy.

On Fri, Jan 24, 2020 at 07:31:34PM +0200, Andy Shevchenko wrote:
> On Fri, Jan 24, 2020 at 05:42:33PM +0100, Sam Ravnborg wrote:
> > On Wed, Jan 22, 2020 at 12:54:00PM +0200, Andy Shevchenko wrote:
> > > There is one OF call in the driver that limits its area of use.
> > > Replace it to generic device_get_match_data() and get rid of OF dependency.
> > > 
> > > While here, cast SPI driver data to certain enumerator type.
> 
> > >  enum repaper_model {
> > > +	EXXXXCSXXX = 0,
> > >  	E1144CS021 = 1,
> > >  	E1190CS021,
> > >  	E2200CS021,
> > The new enum value is not used in the following - is it necessary?
> 
> Yes. It explicitly prevents to use 0 for real device.
> 
> This is due to device_get_match_data() returns content of data pointer and thus
> we may not distinguish 0 from NULL pointer.
A name that told this was not a valid name would be descriptive.
As it is now it looks like a wildcard that matches everythign else.

With a more descriptive name:
Reviewed-by: Sam Ravnborg <sam at ravnborg.org>


	Sam